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Modelling and evaluating the resilience of environmental systems has recently raised significant interest among both practitioners and researchers. However, it has not yet been used to measure the absorption and recovery capacities of a river subject to varying levels of pollution due to natural and anthropic sources of contamination within the basin. Fast worldwide population growth and climate change are contributing to an increased degradation status in surface water bodies and to a decreased efficiency of their natural self-purification processes. Decision-makers are, therefore, more and more encouraged to implement alternative management strategies focussed on improving the system resilience to current and future perturbations. To this end, a novel Water Resilience Index (WRI), based on different quality parameters, was developed, and it is here proposed to estimate the ability of the river Bacchiglione, located in Northeast Italy, absorb continuous and unpredictable changes due to potential effects of point sources of pollution, that is, urban and industrial wastewater, and still maintain its vital functions. This new index is integrated in a mathematical model, which represents the river as an influence diagram where the nodes are the gauged stations and the arcs are the fluvial reaches among the stations, to identify the river reaches in need of resilience improvement. In addition, in order to simplify the analytical procedure and lower the costs and times of the monitoring activities, a principal component analysis is also used, as it is able to reduce the number of the water quality parameters to be collected from the sampling stations, distributed along the main river, and thus to calculate a minimum WRI. The good agreement between the results obtained by both the original and minimum WRI shows the effectiveness of the proposed methodology. This approach could be applied to all basins with the same issues, and not just in the Italian case study here analysed, as it might be a valid tool to plan interventions and mitigation actions, protecting the resource from pollution risks and achieving environmental quality and Sustainable Development Goals both in the water bodies and their surrounding territories. In addition, this strategy could be integrated in the existing models supporting local decision-makers and administrators, aiming at increasing the resilience of urban and rural areas to pollution phenomena and facilitating the development of effective policies to reduce the impacts of global change on water quality.
Domenica Mirauda; Donatella Caniani; Maria Teresa Colucci; Marco Ostoich. Assessing the fluvial system resilience of the river Bacchiglione to point sources of pollution in Northeast Italy: a novel Water Resilience Index (WRI) approach. Environmental Science and Pollution Research 2021, 1 -18.
AMA StyleDomenica Mirauda, Donatella Caniani, Maria Teresa Colucci, Marco Ostoich. Assessing the fluvial system resilience of the river Bacchiglione to point sources of pollution in Northeast Italy: a novel Water Resilience Index (WRI) approach. Environmental Science and Pollution Research. 2021; ():1-18.
Chicago/Turabian StyleDomenica Mirauda; Donatella Caniani; Maria Teresa Colucci; Marco Ostoich. 2021. "Assessing the fluvial system resilience of the river Bacchiglione to point sources of pollution in Northeast Italy: a novel Water Resilience Index (WRI) approach." Environmental Science and Pollution Research , no. : 1-18.
Vortex-induced vibrations (VIV) in systems with more than one degree of freedom often present complex synchronization among the motion components, also hidden by the randomness that characterizes the motion itself. A phase average method has been here developed and applied to the displacements of a tethered sphere, at low mass and damping, to analyze its xy trajectories over a wide range of reduced velocities, 5 ≤ U* ≤ 25 (Reynolds numbers, 5.1 × 103 ≤ Re ≤ 2.67 × 104). This method has allowed the identification of both the periodic and chaotic contribution of each motion component, accurately reconstructing the underlying trajectory periodic pattern. The two classical vibration modes, I and II, have been also observed. The method developed here was able to better rebuild the experimental data compared to other methods found in the relevant literature, providing useful insights into the study of the dynamic response of a freely-oscillating tethered sphere immersed in a steady flow.
Marco Negri; Domenica Mirauda; Stefano Malavasi. An analysis method of the vortex-induced vibrations of a tethered sphere. Meccanica 2020, 55, 1949 -1974.
AMA StyleMarco Negri, Domenica Mirauda, Stefano Malavasi. An analysis method of the vortex-induced vibrations of a tethered sphere. Meccanica. 2020; 55 (10):1949-1974.
Chicago/Turabian StyleMarco Negri; Domenica Mirauda; Stefano Malavasi. 2020. "An analysis method of the vortex-induced vibrations of a tethered sphere." Meccanica 55, no. 10: 1949-1974.
In narrow open channels, the three-dimensional nature of the flow and the transport momentum from the sidewalls to the central region cause the maximum longitudinal velocity to occur below the water surface. The entropy model is unable to accurately describe the velocities near the free surface when the dip phenomenon exists. The present paper proposes a new dip-modified entropy law for steady open channel flows, which consists of three additional terms: the first one similar to Coles’ function; the second one linearly proportional to the logarithmic distance from the free surface; and the third one depending on the cubic correction near the maximum velocity. The validity of the new model was tested on a set of laboratory measurements carried out in a straight rectangular flume with smooth boundaries and for different values of water discharge, bottom slope, and aspect ratio. A detailed error analysis showed good agreement with the data measured through the present research and a more accurate prediction of the velocity-dip-position compared with the one evaluated through the original entropy model. In addition, the modified entropy wake law matched very well with other literature data collected in rectangular cross-sections with different flow conditions.
Domenica Mirauda; Maria Grazia Russo. Entropy Wake Law for Streamwise Velocity Profiles in Smooth Rectangular Open Channels. Entropy 2020, 22, 654 .
AMA StyleDomenica Mirauda, Maria Grazia Russo. Entropy Wake Law for Streamwise Velocity Profiles in Smooth Rectangular Open Channels. Entropy. 2020; 22 (6):654.
Chicago/Turabian StyleDomenica Mirauda; Maria Grazia Russo. 2020. "Entropy Wake Law for Streamwise Velocity Profiles in Smooth Rectangular Open Channels." Entropy 22, no. 6: 654.
To simulate the dynamics of two-dimensional dam-break flow on a dry horizontal bed, we use a smoothed particle hydrodynamics model implementing two advanced boundary treatment techniques: (i) a semi-analytical approach, based on the computation of volume integrals within the truncated portions of the kernel supports at boundaries and (ii) an extension of the ghost-particle boundary method for mobile boundaries, adapted to free-slip conditions. The trends of the free surface along the channel, and of the impact wave pressures on the downstream vertical wall, were first validated against an experimental case study and then compared with other numerical solutions. The two boundary treatment schemes accurately predicted the overall shape of the primary wave front advancing along the dry bed until its impact with the downstream vertical wall. Compared to data from numerical models in the literature, the present results showed a closer fit to an experimental secondary wave, reflected by the downstream wall and characterized by complex vortex structures. The results showed the reliability of both the proposed boundary condition schemes in resolving violent wave breaking and impact events of a practical dam-break application, producing smooth pressure fields and accurately predicting pressure and water level peaks.
Domenica Mirauda; Raffaele Albano; Aurelia Sole; Jan Adamowski. Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods. Water 2020, 12, 1142 .
AMA StyleDomenica Mirauda, Raffaele Albano, Aurelia Sole, Jan Adamowski. Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods. Water. 2020; 12 (4):1142.
Chicago/Turabian StyleDomenica Mirauda; Raffaele Albano; Aurelia Sole; Jan Adamowski. 2020. "Smoothed Particle Hydrodynamics Modeling with Advanced Boundary Conditions for Two-Dimensional Dam-Break Floods." Water 12, no. 4: 1142.
Surface water quality has a vital role when defining the sustainability of the ecological environment, public health, and the social and economic development of whole countries. Unfortunately, the rapid growth of the worldwide population together with the current climate change have mostly determined fluvial pollution. Therefore, the employment of effective methodologies, able to rapidly and easily obtain reliable information on the quality of rivers, is becoming fundamental for an efficient use of the resource and for the implementation of mitigation measures and actions. The Water Quality Index (WQI) is among the most widely used methods to provide a clear and complete picture of the contamination status of a river stressed by point and diffuse sources of natural and anthropic origin, leading the policy makers and end-users towards a more and more correct and sustainable management of the water resource. The parameter choice is one of the most important and complex phases and recent statistical techniques do not seem to show great objectivity and accuracy in the identification of the real water quality status. The present paper offers a new approach, based on entropy theory and known as the Maximum Information Minimum Redundancy (MIMR) criterion, to define the optimal subset of chemical, physical, and biological parameters, describing the variation of the river quality level in space and time and thus identifying its pollution sources. An algorithm was implemented for the MIMR criterion and applied to a sample basin of Northeast Italy in order to verify its reliability and accuracy. A comparison with the Principal Component Analysis (PCA) showed how the MIMR is more suitable and objective to obtain the optimal quality parameters set, especially when the amount of investigated variables is small, and can thus be a useful tool for fast and low-cost water quality assessment in rivers.
Domenica Mirauda; Marco Ostoich. MIMR Criterion Application: Entropy Approach to Select the Optimal Quality Parameter Set Responsible for River Pollution. Sustainability 2020, 12, 2078 .
AMA StyleDomenica Mirauda, Marco Ostoich. MIMR Criterion Application: Entropy Approach to Select the Optimal Quality Parameter Set Responsible for River Pollution. Sustainability. 2020; 12 (5):2078.
Chicago/Turabian StyleDomenica Mirauda; Marco Ostoich. 2020. "MIMR Criterion Application: Entropy Approach to Select the Optimal Quality Parameter Set Responsible for River Pollution." Sustainability 12, no. 5: 2078.
SPHERA v.9.0.0 (RSE SpA) is a FOSS CFD-SPH research code validated on the following application fields: floods with transport of solid bodies and bed-load transport; fast landslides and their interactions with water reservoirs; sediment removal from water bodies; fuel sloshing tanks; hydrodynamic lubrication for energy efficiency actions in the industrial sector. SPHERA is featured by several numerical schemes dealing with: transport of solid bodies in fluid flows; treatment of fixed and mobile solid boundaries; dense granular flows and an erosion criterion. The source and executable codes, the input files and the free numerical chain of SPHERA v.9.0.0 are presented. Some reference validations and applications are also provided. SPHERA is developed and distributed on a GitHub public repository. Program title: SPHERA v.9.0.0 Program files doi: http://dx.doi.org/10.17632/pwv9rsf3w8.1 Code Ocean capsule: https://doi.org/10.24433/CO.7457751.v1 Licensing provisions: GNU General Public License 3 Programming language: Fortran 95 Supplementary material: software documentation/guide, 34 tutorials Nature of problem: SPHERA v.9.0.0 has been applied to free-surface and multi-phase flows involving the following application fields: floods (with transport of solid bodies, bed-load transport and a domain spatial coverage up to some hundreds of squared kilometres), fast landslides and wave motion, sediment removal from water reservoirs, fuel sloshing tanks, hydrodynamic lubrication. Solution method: SPHERA v.9.0.0 is a research FOSS (“Free/Libre and Open-Source Software”) code based on the SPH (“Smoothed Particle Hydrodynamics”) technique, a mesh-less Computational Fluid Dynamics numerical method for free surface and multi-phase flows. The five numerical schemes featuring SPHERA v.9.0.0 deal with: dense granular flows; transport of solid bodies in free surface flows; boundary treatment for both mobile and fixed frontiers; 2D erosion criterion. Additional comments including restrictions and unusual features: SPHERA v.9.0.0 is a 3D research FOSS (“Free/Libre and Open-Source Software”) code (developed under the subversion control system Git) with peculiar features for: floods (with transport of solid bodies, bed-load transport and a domain spatial coverage up to some hundreds of squared kilometres), fast landslides and wave motion, sediment removal from water reservoirs, fuel sloshing tanks, hydrodynamic lubrication. The whole numerical chain of SPHERA is made of FOSS, freeware and Open Data numerical tools. References: SPHERA (RSE SpA), https://github.com/AndreaAmicarelliRSE/SPHERA, last access on 28May2019 Amicarelli A., G. Agate, R. Guandalini; 2013; A 3D Fully Lagrangian Smoothed Particle Hydrodynamics model with both volume and surface discrete elements; International Journal for Numerical Methods in Engineering, 95: 419–450, DOI: 10.1002/nme.4514 Amicarelli A., R. Albano, D. Mirauda, G. Agate, A. Sole, R. Guandalini; 2015; A Smoothed Particle Hydrodynamics model for 3D solid body transport in free surface flows; Computers & Fluids, 116:205–228. DOI 10.1016/j.compfluid.2015.04.018 Amicarelli A., B. Kocak, S. Sibilla, J. Grabe; 2017; A 3D Smoothed Particle Hydrodynamics model for erosional dam-break floods; International Journal of Computational Fluid Dynamics, 31(10):413-434; DOI 10.1080/10618562.2017.1422731 Manenti S., S. Sibilla, M. Gallati, G. Agate, R. Guandalini; 2012; SPH Simulation of Sediment Flushing Induced by a Rapid Water Flow; Journal of Hydraulic Engineering ASCE 138(3): 227–311. Di Monaco A., S. Manenti, M. Gallati, S. Sibilla, G. Agate, R. Guandalini; 2011; SPH modelling of solid boundaries through a semi-analytic approach. Engineering Applications of Computational Fluid Mechanics, 5(1):1-15.
Andrea Amicarelli; Sauro Manenti; Raffaele Albano; Giordano Agate; Marco Paggi; Laura Longoni; Domenica Mirauda; Latifa Ziane; Giacomo Viccione; Sara Todeschini; Aurelia Sole; Lara Martina Baldini; Davide Brambilla; Monica Papini; Mohamed Cherif Khellaf; Bonaventura Tagliafierro; Luca Sarno; Guido Pirovano. SPHERA v.9.0.0: A Computational Fluid Dynamics research code, based on the Smoothed Particle Hydrodynamics mesh-less method. Computer Physics Communications 2020, 250, 107157 .
AMA StyleAndrea Amicarelli, Sauro Manenti, Raffaele Albano, Giordano Agate, Marco Paggi, Laura Longoni, Domenica Mirauda, Latifa Ziane, Giacomo Viccione, Sara Todeschini, Aurelia Sole, Lara Martina Baldini, Davide Brambilla, Monica Papini, Mohamed Cherif Khellaf, Bonaventura Tagliafierro, Luca Sarno, Guido Pirovano. SPHERA v.9.0.0: A Computational Fluid Dynamics research code, based on the Smoothed Particle Hydrodynamics mesh-less method. Computer Physics Communications. 2020; 250 ():107157.
Chicago/Turabian StyleAndrea Amicarelli; Sauro Manenti; Raffaele Albano; Giordano Agate; Marco Paggi; Laura Longoni; Domenica Mirauda; Latifa Ziane; Giacomo Viccione; Sara Todeschini; Aurelia Sole; Lara Martina Baldini; Davide Brambilla; Monica Papini; Mohamed Cherif Khellaf; Bonaventura Tagliafierro; Luca Sarno; Guido Pirovano. 2020. "SPHERA v.9.0.0: A Computational Fluid Dynamics research code, based on the Smoothed Particle Hydrodynamics mesh-less method." Computer Physics Communications 250, no. : 107157.
The estimated population growth in the next decades will create severe scarcity of water and will have a tremendous impact on the natural environment. Both the developed and developing countries will have to face increasing challenges to match the greater demand of clean and safe water, looking for supplies far from the residential area. This situation will be furtherly exasperated by the effects of climate change which, increasing the frequency and intensity of extreme events, will reduce the availability and the quality of water resources and will subject the population to serious and ongoing hazards. In such context, an accurate and continuous monitoring of surface waters represents a fundamental step to reduce the contamination status and plan actions for a sustainable management of this resource. In the last years, the development of advanced methodologies and high-tech equipment able to lower the times and costs of the field surveys has not been associated with an appropriate training of the technical staff of public and private bodies responsible for the control of the territory. In most cases, unable to outsource highly qualified personnel due to lack of funding, such bodies tend to reduce the monitoring activities, leaving the areas even more subject to the risk of disastrous events. The present paper proposes an innovative educational tool based on the virtual reality in support to technical and non-technical workforces in field activities. The tool represents a Virtual Laboratory able to train on the standard techniques for the accurate monitoring of the water discharge in open-channel flows and was successfully tested on a sample of people from the private and public water sector. According to the results, its use increased the fieldworkers’ ability to quickly move within the river as well as to easily and correctly manage the measurement equipment and methodology, so reducing the costs and times of surveys in situ.
Domenica Mirauda; Nicola Capece; Ugo Erra. Sustainable Water Management: Virtual Reality Training for Open-Channel Flow Monitoring. Sustainability 2020, 12, 757 .
AMA StyleDomenica Mirauda, Nicola Capece, Ugo Erra. Sustainable Water Management: Virtual Reality Training for Open-Channel Flow Monitoring. Sustainability. 2020; 12 (3):757.
Chicago/Turabian StyleDomenica Mirauda; Nicola Capece; Ugo Erra. 2020. "Sustainable Water Management: Virtual Reality Training for Open-Channel Flow Monitoring." Sustainability 12, no. 3: 757.
The evaluation of bed shear stress distribution is fundamental to predicting the transport of sediments and pollutants in rivers and to designing successful stable open channels. Such distribution cannot be determined easily as it depends on the velocity field, the shape of the cross section, and the bed roughness conditions. In recent years, information theory has been proven to be reliable for estimating shear stress along the wetted perimeter of open channels. The entropy models require the knowledge of the shear stress maximum and mean values to calculate the Lagrange multipliers, which are necessary to the resolution of the shear stress probability distribution function. This paper proposes a new formulation which stems from the maximization of the Tsallis entropy and simplifies the calculation of the Lagrange coefficients in order to estimate the bed shear stress distribution in open-channel flows. This formulation introduces a relationship between the dimensionless mean shear stress and the entropic parameter which is based on the ratio between the observed mean and maximum velocity of an open-channel cross section. The validity of the derived expression was tested on a large set of literature laboratory measurements in rectangular cross sections having different bed and sidewall roughness conditions as well as various water discharges and flow depths. A detailed error analysis showed good agreement with the experimental data, which allowed linking the small-scale dynamic processes to the large-scale kinematic ones.
Domenica Mirauda; Maria Grazia Russo. Modeling Bed Shear Stress Distribution in Rectangular Channels Using the Entropic Parameter. Entropy 2020, 22, 87 .
AMA StyleDomenica Mirauda, Maria Grazia Russo. Modeling Bed Shear Stress Distribution in Rectangular Channels Using the Entropic Parameter. Entropy. 2020; 22 (1):87.
Chicago/Turabian StyleDomenica Mirauda; Maria Grazia Russo. 2020. "Modeling Bed Shear Stress Distribution in Rectangular Channels Using the Entropic Parameter." Entropy 22, no. 1: 87.
This paper describes an innovative virtual laboratory for students of Hydraulic Engineering at an Italian university that shows water discharge measurement techniques applied in open-channel flows. Such new technology, which supports traditional practical classes, has the potential to increase students’ motivation and improve their skills, as well as simultaneously reducing the costs, time, and possible dangers that continuous field experiments would involve. Thanks to this immersive and interactive experience that is carried out indoors, students learn to move around a fluvial environment, as well as work more safely and with reduced risks of accidents. Besides, the virtual lab can boost learners’ interest by combining education with pleasure and making knowledge more fun. Collaboration with a group of students enrolled in the Master’s degree course of the Civil and Environmental Engineering program at Basilicata University at the early stages of developing the educational tool led to improvements in its performance and features. Also, a preliminary testing procedure carried out on a student sample, verified the achievement of the students’ learning objectives in terms of knowledge and skills. Such analysis indicated that students took more active role in the teaching/learning process and they showed greater interest in the topic dealt with through the new technology compared to the involvement of students observed during traditional lessons in previous years. The architecture and operational modes of the virtual laboratory as well as the results of the preliminary analysis are discussed.
Domenica Mirauda; Nicola Capece; Ugo Erra. StreamflowVL: A Virtual Fieldwork Laboratory that Supports Traditional Hydraulics Engineering Learning. Applied Sciences 2019, 9, 4972 .
AMA StyleDomenica Mirauda, Nicola Capece, Ugo Erra. StreamflowVL: A Virtual Fieldwork Laboratory that Supports Traditional Hydraulics Engineering Learning. Applied Sciences. 2019; 9 (22):4972.
Chicago/Turabian StyleDomenica Mirauda; Nicola Capece; Ugo Erra. 2019. "StreamflowVL: A Virtual Fieldwork Laboratory that Supports Traditional Hydraulics Engineering Learning." Applied Sciences 9, no. 22: 4972.
The knowledge of the fluid discharge in free surface flows requires a great number of velocity measurements along the whole cross-section, taking up a large amount of time, using expensive equipment, and employing specialized labor. To overcome these obstacles, various models have been developed thus far that show how to estimate the mean velocity through the maximum velocity. In three-dimensional open channels, the maximum velocity can be located below the free surface because of the presence of secondary flows mainly originating by the sidewalls, an occurrence known as dip-phenomenon. In this condition, predicting the maximum velocity position is quite difficult and has always represented a challenge to most hydraulic engineers and researchers. In the present study, a mathematical model derived from the information entropy theory is proposed to evaluate the velocity-dip-position over the entire cross-section of both wide and narrow open channels, thus overcoming the limitations of the existing methods. Large literature measurement sets, collected in uniform and non-uniform flows, were used to test the validity of the model, showing good agreement with the experimental data and providing an accurate estimation of the dip-position.
Domenica Mirauda; Maria Grazia Russo. Information Entropy Theory Applied to the Dip-Phenomenon Analysis in Open Channel Flows. Entropy 2019, 21, 554 .
AMA StyleDomenica Mirauda, Maria Grazia Russo. Information Entropy Theory Applied to the Dip-Phenomenon Analysis in Open Channel Flows. Entropy. 2019; 21 (6):554.
Chicago/Turabian StyleDomenica Mirauda; Maria Grazia Russo. 2019. "Information Entropy Theory Applied to the Dip-Phenomenon Analysis in Open Channel Flows." Entropy 21, no. 6: 554.
The design of submerged structures in sea currents presents certain problems that are not only connected to the shape of the obstacle but also to the number of acting forces as well as the correct modelling of the structures dynamic response. Currently, the common approach is that of integrated numerical modelling, which considers the contribution of both current and structure. The reliability of such an approach is better verified with experimental tests performed on models of simple geometry. On the basis of these considerations, the present work analyses the hydrodynamic forces acting on a sphere, which is characterised by a low mass ratio and damping. The sphere is immersed in a free surface flow and can oscillate along the streamwise and transverse flow direction. It is located at three different positions inside the current: close to the channel bottom, near the free surface and in the middle, and equally distant from both the bottom and free surface. The obtained results for different boundaries and flow kinematic conditions show a relevant influence of the free surface on the hydrodynamic forces along both the streamwise and transverse flow directions.
Domenica Mirauda; Marco Negri; Luca Martinelli; Stefano Malavasi. Influence of boundary conditions on the hydrodynamic forces of an oscillating sphere. EPJ Web of Conferences 2018, 180, 02067 .
AMA StyleDomenica Mirauda, Marco Negri, Luca Martinelli, Stefano Malavasi. Influence of boundary conditions on the hydrodynamic forces of an oscillating sphere. EPJ Web of Conferences. 2018; 180 ():02067.
Chicago/Turabian StyleDomenica Mirauda; Marco Negri; Luca Martinelli; Stefano Malavasi. 2018. "Influence of boundary conditions on the hydrodynamic forces of an oscillating sphere." EPJ Web of Conferences 180, no. : 02067.
A first-order analytical solution is proposed for the actual depth-averaged concentration of tracers in shallow river flows in the presence of large Peclet numbers (defined as the ratio of section-averaged velocity times channel width to turbulent diffusion coefficient). The solution shows how complete transverse mixing is never achieved due to the typical shape of the velocity and diffusion coefficient profile, which alternatively tend—depending on the downstream location of the cross-section—to concentrate the mass at the centre or at the boundaries of the cross-section itself. The first-order analytical solution proves to be consistent with the results of Lagrangian numerical simulations based on real-field input data, which show how the solute mass breakthrough curves always exhibit anomalous behaviour and a considerable and persistent delay when compared with those that are analytically obtained by assuming a truly one-dimensional process.
Marilena Pannone; Domenica Mirauda; Annamaria De Vincenzo; Bruno Molino. Longitudinal Dispersion in Straight Open Channels: Anomalous Breakthrough Curves and First-Order Analytical Solution for the Depth-Averaged Concentration. Water 2018, 10, 478 .
AMA StyleMarilena Pannone, Domenica Mirauda, Annamaria De Vincenzo, Bruno Molino. Longitudinal Dispersion in Straight Open Channels: Anomalous Breakthrough Curves and First-Order Analytical Solution for the Depth-Averaged Concentration. Water. 2018; 10 (4):478.
Chicago/Turabian StyleMarilena Pannone; Domenica Mirauda; Annamaria De Vincenzo; Bruno Molino. 2018. "Longitudinal Dispersion in Straight Open Channels: Anomalous Breakthrough Curves and First-Order Analytical Solution for the Depth-Averaged Concentration." Water 10, no. 4: 478.
Suspended sediment concentration is a key aspect in the forecasting of river evolution dynamics, as well as in water quality assessment, evaluation of reservoir impacts, and management of water resources. The estimation of suspended load often relies on empirical models, of which efficiency is limited by their analytic structure or by the need for calibration parameters. The present work deals with a simplified fully-analytical formulation of the so-called entropic model in order to reproduce the vertical distribution of sediment concentration. The simplification consists in the leading order expansion of the generalized spatial coordinate of the entropic velocity profile that, strictly speaking, applies to the near-bed region, but that provides acceptable results also near the free surface. The proposed closed-form solution, which highlights the interplay among channel morphology, stream power, secondary flows, and suspended transport features, allows reducing the needed number of field measurements and, therefore, the time of field activities. Its accuracy and robustness were successfully tested based on the comparison with laboratory data reported in literature.
Domenica Mirauda; Annamaria De Vincenzo; Marilena Pannone. Simplified Entropic Model for the Evaluation of Suspended Load Concentration. Water 2018, 10, 378 .
AMA StyleDomenica Mirauda, Annamaria De Vincenzo, Marilena Pannone. Simplified Entropic Model for the Evaluation of Suspended Load Concentration. Water. 2018; 10 (4):378.
Chicago/Turabian StyleDomenica Mirauda; Annamaria De Vincenzo; Marilena Pannone. 2018. "Simplified Entropic Model for the Evaluation of Suspended Load Concentration." Water 10, no. 4: 378.
In this paper, a mathematical model has been applied to a river in North-East Italy to describe vulnerability scenarios due to environmental pollution phenomena. Such model, based on the influence diagrams theory, allowed identifying the extremely critical factors, such as wastewater discharges, drainage of diffuse pollution from agriculture and climate changes, which might affect the water quality of the river. The obtained results underlined how the water quality conditions have improved thanks to the continuous controls on the territory, following the application of Water Framework Directive 2000/60/EC. Nevertheless, some fluvial stretches did not reach the "good ecological status" by 2015, because of the increasing population in urban areas recorded in the last years and the high presence of tourists during the summer months, not balanced by a treatment plants upgrade.
D Mirauda; M Ostoich; F Di Maria; S Benacchio; I Saccardo. Integrity Model Application: A Quality Support System for Decision-makers on Water Quality Assessment and Improvement. IOP Conference Series: Earth and Environmental Science 2018, 120, 012006 .
AMA StyleD Mirauda, M Ostoich, F Di Maria, S Benacchio, I Saccardo. Integrity Model Application: A Quality Support System for Decision-makers on Water Quality Assessment and Improvement. IOP Conference Series: Earth and Environmental Science. 2018; 120 (1):012006.
Chicago/Turabian StyleD Mirauda; M Ostoich; F Di Maria; S Benacchio; I Saccardo. 2018. "Integrity Model Application: A Quality Support System for Decision-makers on Water Quality Assessment and Improvement." IOP Conference Series: Earth and Environmental Science 120, no. 1: 012006.
The present study develops an integrated methodology combining the results of the water-quality classification, according to the Water Framework Directive 2000/60/EC—WFD, with those of a mathematical integrity model. It is able to analyse the potential anthropogenic impacts on the receiving water body and to help municipal decision-makers when selecting short/medium/long-term strategic mitigation actions to be performed in a territory. Among the most important causes of water-quality degradation in a river, the focus is placed on pollutants from urban wastewater. In particular, the proposed approach evaluates the efficiency and the accurate localisation of treatment plants in a basin, as well as the capacity of its river to bear the residual pollution loads after the treatment phase. The methodology is applied to a sample catchment area, located in northern Italy, where water quality is strongly affected by high population density and by the presence of agricultural and industrial activities. Nearly 10 years of water-quality data collected through official monitoring are considered for the implementation of the system. The sample basin shows different real and potential pollution conditions, according to the resilience of the river and surroundings, together with the point and diffuse pressure sources acting on the receiving body.
Domenica Mirauda; Marco Ostoich. Assessment of Pressure Sources and Water Body Resilience: An Integrated Approach for Action Planning in a Polluted River Basin. International Journal of Environmental Research and Public Health 2018, 15, 390 .
AMA StyleDomenica Mirauda, Marco Ostoich. Assessment of Pressure Sources and Water Body Resilience: An Integrated Approach for Action Planning in a Polluted River Basin. International Journal of Environmental Research and Public Health. 2018; 15 (2):390.
Chicago/Turabian StyleDomenica Mirauda; Marco Ostoich. 2018. "Assessment of Pressure Sources and Water Body Resilience: An Integrated Approach for Action Planning in a Polluted River Basin." International Journal of Environmental Research and Public Health 15, no. 2: 390.
The three-dimensional structure of river flow and the presence of secondary currents, mainly near walls, often cause the maximum cross-sectional velocity to occur below the free surface, which is known as the “dip” phenomenon. The present study proposes a theoretical model derived from the entropy theory to predict the velocity dip position along with the corresponding velocity value. Field data, collected at three ungauged sections located along the Alzette river in the Grand Duchy of Luxembourg and at three gauged sections located along three large rivers in Basilicata (southern Italy), were used to test its validity. The results show that the model is in good agreement with the experimental measurements and, when compared with other models documented in the literature, yields the least percentage error.
Domenica Mirauda; Marilena Pannone; Annamaria De Vincenzo. An Entropic Model for the Assessment of Streamwise Velocity Dip in Wide Open Channels. Entropy 2018, 20, 69 .
AMA StyleDomenica Mirauda, Marilena Pannone, Annamaria De Vincenzo. An Entropic Model for the Assessment of Streamwise Velocity Dip in Wide Open Channels. Entropy. 2018; 20 (1):69.
Chicago/Turabian StyleDomenica Mirauda; Marilena Pannone; Annamaria De Vincenzo. 2018. "An Entropic Model for the Assessment of Streamwise Velocity Dip in Wide Open Channels." Entropy 20, no. 1: 69.
Marco Negri; Domenica Mirauda; Stefano Malavasi. VIV trajectories of an elastically mounted sphere. Applied Ocean Research 2018, 70, 62 -75.
AMA StyleMarco Negri, Domenica Mirauda, Stefano Malavasi. VIV trajectories of an elastically mounted sphere. Applied Ocean Research. 2018; 70 ():62-75.
Chicago/Turabian StyleMarco Negri; Domenica Mirauda; Stefano Malavasi. 2018. "VIV trajectories of an elastically mounted sphere." Applied Ocean Research 70, no. : 62-75.
The present paper proposes a mobile prototype platform, based on Augmented Reality and multimedia smart-phone technology, which operates on a combination of real environment and computer-generated data in order to increase the human perception of a scene in real time. By enhancing visible details and displaying invisible or inexistent objects, this platform could improve water monitoring activities as well as the understanding of physical processes by technical and non-technical mobile workforces. At the same time, such a tool might support decision-makers in choosing strategies and actions aimed at forecasting, preventing, and mitigating environmental risks. A preliminary validation of the prototype performance was carried out in the field of water management, specifically for sample basin of Southern Italy. During the testing phase, this innovative application showed its ability to speed up field surveys, easily move around in unknown or remote places, and allow the employment of less-specialised users. These results could help reduce the time and costs of water monitoring activities, which would be perceived as essential by local administrators, contributing thus to the safeguard and the correct use of water resources.
Domenica Mirauda; Ugo Erra; Roberto Agatiello; Marco Cerverizzo. Applications of Mobile Augmented Reality to Water Resources Management. Water 2017, 9, 699 .
AMA StyleDomenica Mirauda, Ugo Erra, Roberto Agatiello, Marco Cerverizzo. Applications of Mobile Augmented Reality to Water Resources Management. Water. 2017; 9 (9):699.
Chicago/Turabian StyleDomenica Mirauda; Ugo Erra; Roberto Agatiello; Marco Cerverizzo. 2017. "Applications of Mobile Augmented Reality to Water Resources Management." Water 9, no. 9: 699.
Large debris, including vehicles parked along floodplains, can cause severe damage and significant loss of life during urban area flash-floods. In this study, the authors validated and applied the Smoothed Particle Hydrodynamics (SPH) model developed in Amicarelli et al. (2015), which reproduces in 3D the dynamics of rigid bodies driven by free surface flows, to the design of flood mitigation measures. To validate the model, the authors compared the model’s predictions to the results of an experimental setup, involving a dam breach that strikes two fixed obstacles and three transportable floating bodies. Given the accuracy of the results, in terms of water depth over time and the time history of the bodies’ movements, the SPH model explored in this study was used to analyse the mitigation efficiency of a proposed structural intervention – the use of small barriers (groynes) to prevent the transport of floating bodies. Different groynes configurations were examined to identify the most appropriate design and layout for urban area flash-flood damage mitigation. The authors found that groynes positioned upstream and downstream of each floating body can be effective as a risk mitigation measure for damage resulting from their movement.
Raffaele Albano; Aurelia Sole; Domenica Mirauda; Jan Adamowski. Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model. Journal of Hydrology 2016, 541, 344 -358.
AMA StyleRaffaele Albano, Aurelia Sole, Domenica Mirauda, Jan Adamowski. Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model. Journal of Hydrology. 2016; 541 ():344-358.
Chicago/Turabian StyleRaffaele Albano; Aurelia Sole; Domenica Mirauda; Jan Adamowski. 2016. "Modelling large floating bodies in urban area flash-floods via a Smoothed Particle Hydrodynamics model." Journal of Hydrology 541, no. : 344-358.
Silvano Fortunato Dal Sasso; Aurelia Sole; Allen Bateman Pinzón; Vicente Medina; Domenica Mirauda; Antonio Volpe Plantamura; Luciana Giosa; Annibale Guariglia. Analysis of river bed dynamic evolution following a landslide dam. La Houille Blanche 2015, 101, 88 -95.
AMA StyleSilvano Fortunato Dal Sasso, Aurelia Sole, Allen Bateman Pinzón, Vicente Medina, Domenica Mirauda, Antonio Volpe Plantamura, Luciana Giosa, Annibale Guariglia. Analysis of river bed dynamic evolution following a landslide dam. La Houille Blanche. 2015; 101 (6):88-95.
Chicago/Turabian StyleSilvano Fortunato Dal Sasso; Aurelia Sole; Allen Bateman Pinzón; Vicente Medina; Domenica Mirauda; Antonio Volpe Plantamura; Luciana Giosa; Annibale Guariglia. 2015. "Analysis of river bed dynamic evolution following a landslide dam." La Houille Blanche 101, no. 6: 88-95.