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Mariusz Ptak; Mariusz Sojka; Bogumił Nowak; Tomasz Kałuża. Tendenzen der Veränderungen der Wassertemperatur von Seen in Nord-Ost-Polen. WASSERWIRTSCHAFT 2020, 110, 41 -45.
AMA StyleMariusz Ptak, Mariusz Sojka, Bogumił Nowak, Tomasz Kałuża. Tendenzen der Veränderungen der Wassertemperatur von Seen in Nord-Ost-Polen. WASSERWIRTSCHAFT. 2020; 110 (4):41-45.
Chicago/Turabian StyleMariusz Ptak; Mariusz Sojka; Bogumił Nowak; Tomasz Kałuża. 2020. "Tendenzen der Veränderungen der Wassertemperatur von Seen in Nord-Ost-Polen." WASSERWIRTSCHAFT 110, no. 4: 41-45.
The paper includes data derived from airborne laser scanning (LiDAR) to develop a 2-D hydrodynamic model of water flow in the middle reach of the Warta River between Nowe Miasto nad Wartą and Solec. Particular attention was paid to problems associated with the conversion of a digital terrain model (DTM) for the purpose of hydraulic modelling. LIDAR data were also used in the development process of a numerical roughness model by means of the so-called vegetation stratification. The results of model calculations in the form of maximum water surface elevations of the river were compared with water surface elevations derived from levelling carried out in the field. On this basis the verification of the model results was performed. The possibilities of using data from airborne laser scanning to develop a model and assess roughness coefficients of the floodplains were also examined.
Albert Malinger; Tomasz Kaluza; Tomasz Dysarz. LIDAR Data Application in the Process of Developing a Hydrodynamic Flow Model Exemplified by the Warta River Reach. Flood Risk in the Upper Vistula Basin 2020, 159 -170.
AMA StyleAlbert Malinger, Tomasz Kaluza, Tomasz Dysarz. LIDAR Data Application in the Process of Developing a Hydrodynamic Flow Model Exemplified by the Warta River Reach. Flood Risk in the Upper Vistula Basin. 2020; ():159-170.
Chicago/Turabian StyleAlbert Malinger; Tomasz Kaluza; Tomasz Dysarz. 2020. "LIDAR Data Application in the Process of Developing a Hydrodynamic Flow Model Exemplified by the Warta River Reach." Flood Risk in the Upper Vistula Basin , no. : 159-170.
The ecological water quality in rivers and streams is influenced both by the morphological factors (within the watercourse channel and by the dynamic factors associated with flow), as well as biological factors (connected with the flora and fauna characteristic of its specific area). This paper presents an analysis of the effect of river channel shading by trees and shrubs on hydromorphological changes in a selected reach of the Wełna River, Poland. The analysis was conducted on two adjacent cross-sections (one in a reach lined with trees, the other in an open area with no tree or shrub vegetation). Data were collected during field surveys in the years 2014 and 2019. According to the Water Framework Directive, the Wełna River represents a watercourse with small and average-sized watershed areas, with sand being the dominant substrate of the river bottom. Flow volume, distributions of velocity in the sections, as well as substrate grain-size characteristics and river bottom morphology, were determined based on field measurements. In the study, the leaf area index (LAI) of vegetation was measured in the reach lined with trees, while the number and species composition of macrophytes were determined in the investigated river reaches. Moreover, a digital surface model (DSM) and Geoinformation Information System GIS tools were used to illustrate variability in shading within the tree-lined reach. The DSM model was based on Light Detection and Ranging (LIDAR) data. The results of this study enable us to establish the relationship between river shading by vegetation covering the bank zone, and changes in hydromorphological parameters of the river channel.
Tomasz Kałuża; Mariusz Sojka; Rafał Wróżyński; Joanna Jaskuła; Stanisław Zaborowski; Mateusz Hämmerling. Modeling of River Channel Shading as a Factor for Changes in Hydromorphological Conditions of Small Lowland Rivers. Water 2020, 12, 527 .
AMA StyleTomasz Kałuża, Mariusz Sojka, Rafał Wróżyński, Joanna Jaskuła, Stanisław Zaborowski, Mateusz Hämmerling. Modeling of River Channel Shading as a Factor for Changes in Hydromorphological Conditions of Small Lowland Rivers. Water. 2020; 12 (2):527.
Chicago/Turabian StyleTomasz Kałuża; Mariusz Sojka; Rafał Wróżyński; Joanna Jaskuła; Stanisław Zaborowski; Mateusz Hämmerling. 2020. "Modeling of River Channel Shading as a Factor for Changes in Hydromorphological Conditions of Small Lowland Rivers." Water 12, no. 2: 527.
Mariusz Ptak; Mariusz Sojka; Tomasz Kałuża; Adam Choiński; Bogumił Nowak. Long-term water temperature trends of the Warta River in the years 1960–2009. Ecohydrology & Hydrobiology 2019, 19, 441 -451.
AMA StyleMariusz Ptak, Mariusz Sojka, Tomasz Kałuża, Adam Choiński, Bogumił Nowak. Long-term water temperature trends of the Warta River in the years 1960–2009. Ecohydrology & Hydrobiology. 2019; 19 (3):441-451.
Chicago/Turabian StyleMariusz Ptak; Mariusz Sojka; Tomasz Kałuża; Adam Choiński; Bogumił Nowak. 2019. "Long-term water temperature trends of the Warta River in the years 1960–2009." Ecohydrology & Hydrobiology 19, no. 3: 441-451.
Ewelina Szałkiewicz; Tomasz Dysarz; Tomasz Kałuża; Albert Malinger; Artur Radecki-Pawlik. ANALYSIS OF IN-STREAM RESTORATION STRUCTURES IMPACT ON HYDRAULIC CONDITION AND SEDIMENTATION IN THE FLINTA RIVER, POLAND. Carpathian Journal of Earth and Environmental Sciences 2019, 14, 275 -286.
AMA StyleEwelina Szałkiewicz, Tomasz Dysarz, Tomasz Kałuża, Albert Malinger, Artur Radecki-Pawlik. ANALYSIS OF IN-STREAM RESTORATION STRUCTURES IMPACT ON HYDRAULIC CONDITION AND SEDIMENTATION IN THE FLINTA RIVER, POLAND. Carpathian Journal of Earth and Environmental Sciences. 2019; 14 (2):275-286.
Chicago/Turabian StyleEwelina Szałkiewicz; Tomasz Dysarz; Tomasz Kałuża; Albert Malinger; Artur Radecki-Pawlik. 2019. "ANALYSIS OF IN-STREAM RESTORATION STRUCTURES IMPACT ON HYDRAULIC CONDITION AND SEDIMENTATION IN THE FLINTA RIVER, POLAND." Carpathian Journal of Earth and Environmental Sciences 14, no. 2: 275-286.
The paper presents an original method for the evaluation of bark structure characteristics of tree trunks on the basis of terrestrial laser scanning data. Measurements testing the method proposed were performed in laboratory conditions for trunks of pine (Pinus sylvestris L.) and oak (Quercus robur L.). The laser scanner used was a FARO Focus 3D. The scanning was carried out in two variants for natural trunks (variant I: samples Oak-I, Pine-I) and for trunks wrapped in foil (variant II: samples Oak-II, Pine-II). The point clouds obtained were combined into a three-dimensional (3D) model, filtered, and exported to the *.xyz format in SCENE (v. 5×) software provided by FARO. For calculation of the bark structure characteristics the geoprocessing Tree Trunk Bark Structure Model (TTBSM) operating in the ArcGIS environment was developed. The mean bark height factor (BHF) of the natural pine and oak tree trunks was calculated to be 0.39 cm and 0.37 cm, while the values for the trunks wrapped in foil were 0.27 cm and 0.25 cm, respectively. The BHF of the tree trunks wrapped in foil varied in the range 0.26–0.28 cm and 0.24–0.26 cm for pine and oak, respectively, while for the natural tree trunks the range was 0.38–0.46 cm and 0.35–0.38 cm for pine and oak, respectively. The effect of BHF on the flow resistance was evaluated in a measuring trough and proved to be significant. The coefficient of flow resistance was on average 20% higher for the natural tree trunks than for those foil-wrapped.
Tomasz Kałuża; Mariusz Sojka; Paweł Strzeliński; Rafał Wróżyński. Application of Terrestrial Laser Scanning to Tree Trunk Bark Structure Characteristics Evaluation and Analysis of Their Effect on the Flow Resistance Coefficient. Water 2018, 10, 753 .
AMA StyleTomasz Kałuża, Mariusz Sojka, Paweł Strzeliński, Rafał Wróżyński. Application of Terrestrial Laser Scanning to Tree Trunk Bark Structure Characteristics Evaluation and Analysis of Their Effect on the Flow Resistance Coefficient. Water. 2018; 10 (6):753.
Chicago/Turabian StyleTomasz Kałuża; Mariusz Sojka; Paweł Strzeliński; Rafał Wróżyński. 2018. "Application of Terrestrial Laser Scanning to Tree Trunk Bark Structure Characteristics Evaluation and Analysis of Their Effect on the Flow Resistance Coefficient." Water 10, no. 6: 753.
River restoration has become increasingly attractive worldwide as it provides considerable benefits to the environment as well as to the economy. This study focuses on changes of hydromorphological conditions in a small lowland river recorded during an experiment carried out in the Flinta River, central Poland. The proposed solution was a pilot project of the construction of vegetative sediment traps (plant basket hydraulic structures - PBHS). A set of three PBSH was installed in the riverbed in one row and a range of hydraulic parameters were recorded over a period of three years (six measurement sessions). Changes of sediment grain size were analysed, and the amount and size of plant debris in the plant barriers were recorded. Plant debris accumulation influencing flow hydrodynamics was detected as a result of the installation of vegetative sediment traps. Moreover, various hydromorphological processes in the river were initiated. Additional simulations based on the detected processes showed that the proposed plant basket hydraulic structures can improve the hydromorphological status of the river.
Tomasz Kałuża; Artur Radecki-Pawlik; Krzysztof Szoszkiewicz; Karol Plesiński; Bartosz Radecki-Pawlik; Ireneusz Laks. Plant basket hydraulic structures (PBHS) as a new river restoration measure. Science of The Total Environment 2018, 627, 245 -255.
AMA StyleTomasz Kałuża, Artur Radecki-Pawlik, Krzysztof Szoszkiewicz, Karol Plesiński, Bartosz Radecki-Pawlik, Ireneusz Laks. Plant basket hydraulic structures (PBHS) as a new river restoration measure. Science of The Total Environment. 2018; 627 ():245-255.
Chicago/Turabian StyleTomasz Kałuża; Artur Radecki-Pawlik; Krzysztof Szoszkiewicz; Karol Plesiński; Bartosz Radecki-Pawlik; Ireneusz Laks. 2018. "Plant basket hydraulic structures (PBHS) as a new river restoration measure." Science of The Total Environment 627, no. : 245-255.
Willow bush growing in floodplains is a dominant form of vegetation in lowland river valleys due to the availability of water and light. Uncontrolled growth of this plant results in a lower capacity of floodplain areas. Vegetation can narrow the active width of water flow, as well as change water flow velocities at hydrometric verticals falling within the floodplain and the main channel. This paper analyses the impact of long-term growth of willow shrubs on flow resistance coefficient values. Both an increase in the average diameter and the density characterised by the average distance between branches have a significant impact on reducing the flow. The adopted research variants were based on data on the growth rate of the most popular species and forms of willow found in the floodplains of the Warta River above the Jeziorsko reservoir. Two research scenarios were analysed, including data from 12 years, on the development of floodplain vegetation. The first scenario included only the change in diameter (vegetation grew on a cultivation plot), whereas the density remained constant. The second scenario investigated the inverse model—vegetation growing in an uncontrolled manner. The analysis of the tests proved the impact of various bush development scenarios on flow conditions. The results, referred to in the available research papers, indicated the importance of the dynamics of shrub development to the local flow conditions. It was stated that reduction in the flow, depending on the analysed scenario, could reach 45% for scenarios in which the only considered factor was the increase in diameter (at a constant density), and up to 70% in the case of increase in the density of vegetation. Thorough knowledge of this phenomenon may help manage and maintain natural river valleys.
Natalia Walczak; Zbigniew Walczak; Tomasz Kałuża; Mateusz Hämmerling; Piotr Stachowski. The Impact of Shrubby Floodplain Vegetation Growth on the Discharge Capacity of River Valleys. Water 2018, 10, 556 .
AMA StyleNatalia Walczak, Zbigniew Walczak, Tomasz Kałuża, Mateusz Hämmerling, Piotr Stachowski. The Impact of Shrubby Floodplain Vegetation Growth on the Discharge Capacity of River Valleys. Water. 2018; 10 (5):556.
Chicago/Turabian StyleNatalia Walczak; Zbigniew Walczak; Tomasz Kałuża; Mateusz Hämmerling; Piotr Stachowski. 2018. "The Impact of Shrubby Floodplain Vegetation Growth on the Discharge Capacity of River Valleys." Water 10, no. 5: 556.
The presented research analyses the impact of deflectors on sediment transport processes. The basis for analysis is a hydrodynamic model of downstream part of the Flinta river. The geometry reproduction was performed using spatial data: digital elevation model (DEM) and cross-sections of considered reach. The computations were calculated in HEC-RAS 5.0.1, a common software used to calculate water surface profiles and sediment transport. In the research, two calculation variants were analysed: (1) with initial geometry of channel, and (2) with geometry after introducing deflectors. In order to take into account uncertainty, five scenarios of 10-year flow hydrographs were tested. To calculate the intensity of sediment transport, the Engelund-Hansen formula was used. The results suggest a possible initiation of local scours near the structures.
Ewelina Szałkiewicz; Tomasz Dysarz; Tomasz Kałuża; Albert Malinger; Artur Radecki-Pawlik. The Impact of Deflectors on Sediment Transport Processes on the Basis of Modelling and Simulations. Flood Risk in the Upper Vistula Basin 2018, 455 -464.
AMA StyleEwelina Szałkiewicz, Tomasz Dysarz, Tomasz Kałuża, Albert Malinger, Artur Radecki-Pawlik. The Impact of Deflectors on Sediment Transport Processes on the Basis of Modelling and Simulations. Flood Risk in the Upper Vistula Basin. 2018; ():455-464.
Chicago/Turabian StyleEwelina Szałkiewicz; Tomasz Dysarz; Tomasz Kałuża; Albert Malinger; Artur Radecki-Pawlik. 2018. "The Impact of Deflectors on Sediment Transport Processes on the Basis of Modelling and Simulations." Flood Risk in the Upper Vistula Basin , no. : 455-464.
The analysis of in situ measurements of velocity distribution in the floodplain of the lowland river has been carried out. The survey area was located on a bypass channel of the Warta River (West of Poland) which is filled with water only in case of flood waves. The floodplain is covered by grassland and reed marsh habitats. The velocity measurements were performed with an acoustic Doppler current profiler (ADCP) in a cross-section with a bed reinforced with concrete slabs. The measured velocities have reflected the differentiated impact of various vegetation types on the loss of water flow energy. The statistical analyses have proven a relationship between the local velocities and the type of plant communities.
Ireneusz Laks; Krzysztof Szoszkiewicz; Tomasz Kałuża. Analysis of in situ water velocity distributions in the lowland river floodplain covered by grassland and reed marsh habitats - a case study of the bypass channel of Warta River (Western Poland). Journal of Hydrology and Hydromechanics 2017, 65, 325 -332.
AMA StyleIreneusz Laks, Krzysztof Szoszkiewicz, Tomasz Kałuża. Analysis of in situ water velocity distributions in the lowland river floodplain covered by grassland and reed marsh habitats - a case study of the bypass channel of Warta River (Western Poland). Journal of Hydrology and Hydromechanics. 2017; 65 (4):325-332.
Chicago/Turabian StyleIreneusz Laks; Krzysztof Szoszkiewicz; Tomasz Kałuża. 2017. "Analysis of in situ water velocity distributions in the lowland river floodplain covered by grassland and reed marsh habitats - a case study of the bypass channel of Warta River (Western Poland)." Journal of Hydrology and Hydromechanics 65, no. 4: 325-332.
Tomasz Kałuża; Uniwersytet Przyrodniczy W Poznaniu; Zbigniew Sroka; Joanna Lewandowska. IMPACT OF DECREASING THE NORMAL DAMMING LEVEL OF THE JEZIORSKO RESERVOIR ON LOW FLOWS IN THE WARTA RIVER. Acta Scientiarum Polonorum Formatio Circumiectus 2017, 2, 107 -122.
AMA StyleTomasz Kałuża, Uniwersytet Przyrodniczy W Poznaniu, Zbigniew Sroka, Joanna Lewandowska. IMPACT OF DECREASING THE NORMAL DAMMING LEVEL OF THE JEZIORSKO RESERVOIR ON LOW FLOWS IN THE WARTA RIVER. Acta Scientiarum Polonorum Formatio Circumiectus. 2017; 2 (2):107-122.
Chicago/Turabian StyleTomasz Kałuża; Uniwersytet Przyrodniczy W Poznaniu; Zbigniew Sroka; Joanna Lewandowska. 2017. "IMPACT OF DECREASING THE NORMAL DAMMING LEVEL OF THE JEZIORSKO RESERVOIR ON LOW FLOWS IN THE WARTA RIVER." Acta Scientiarum Polonorum Formatio Circumiectus 2, no. 2: 107-122.
Mateusz Hammerling; Poznań University of Life Sciences; Tomasz Kałuża; Natalia Walczak. HYDRAULIC CONDITIONS OF WATER FLOW IN SEMINATURAL FISH PASS, A CASE STUDY OF THE SKÓRKA BARRAGE ON THE GŁOMIA RIVER. Acta Scientiarum Polonorum Formatio Circumiectus 2017, 2, 85 -96.
AMA StyleMateusz Hammerling, Poznań University of Life Sciences, Tomasz Kałuża, Natalia Walczak. HYDRAULIC CONDITIONS OF WATER FLOW IN SEMINATURAL FISH PASS, A CASE STUDY OF THE SKÓRKA BARRAGE ON THE GŁOMIA RIVER. Acta Scientiarum Polonorum Formatio Circumiectus. 2017; 2 (2):85-96.
Chicago/Turabian StyleMateusz Hammerling; Poznań University of Life Sciences; Tomasz Kałuża; Natalia Walczak. 2017. "HYDRAULIC CONDITIONS OF WATER FLOW IN SEMINATURAL FISH PASS, A CASE STUDY OF THE SKÓRKA BARRAGE ON THE GŁOMIA RIVER." Acta Scientiarum Polonorum Formatio Circumiectus 2, no. 2: 85-96.
Tomasz Kałuża; Uniwersytet Przyrodniczy W Poznaniu; Paweł Zawadzki; Jacek Mądrawski; Rafał Stasik. ANALYSIS OF IMPACT OF STRUŻYNA RESERVOIR MODERNIZATION ON GROUNDWATER LEVEL. Acta Scientiarum Polonorum Formatio Circumiectus 2017, 3, 153 -169.
AMA StyleTomasz Kałuża, Uniwersytet Przyrodniczy W Poznaniu, Paweł Zawadzki, Jacek Mądrawski, Rafał Stasik. ANALYSIS OF IMPACT OF STRUŻYNA RESERVOIR MODERNIZATION ON GROUNDWATER LEVEL. Acta Scientiarum Polonorum Formatio Circumiectus. 2017; 3 (3):153-169.
Chicago/Turabian StyleTomasz Kałuża; Uniwersytet Przyrodniczy W Poznaniu; Paweł Zawadzki; Jacek Mądrawski; Rafał Stasik. 2017. "ANALYSIS OF IMPACT OF STRUŻYNA RESERVOIR MODERNIZATION ON GROUNDWATER LEVEL." Acta Scientiarum Polonorum Formatio Circumiectus 3, no. 3: 153-169.
Robert Mazur; Tomasz Kałuża; Joanna Chmist; Natalia Walczak; Ireneusz Laks; Paweł Strzeliński. Influence of deposition of fine plant debris in river floodplain shrubs on flood flow conditions – The Warta River case study. Physics and Chemistry of the Earth, Parts A/B/C 2016, 94, 106 -113.
AMA StyleRobert Mazur, Tomasz Kałuża, Joanna Chmist, Natalia Walczak, Ireneusz Laks, Paweł Strzeliński. Influence of deposition of fine plant debris in river floodplain shrubs on flood flow conditions – The Warta River case study. Physics and Chemistry of the Earth, Parts A/B/C. 2016; 94 ():106-113.
Chicago/Turabian StyleRobert Mazur; Tomasz Kałuża; Joanna Chmist; Natalia Walczak; Ireneusz Laks; Paweł Strzeliński. 2016. "Influence of deposition of fine plant debris in river floodplain shrubs on flood flow conditions – The Warta River case study." Physics and Chemistry of the Earth, Parts A/B/C 94, no. : 106-113.
This paper deals with problems related to the improvement of the hydromorphological conditions of the river Flinta in its sections located in the Natura 2000 area. Based on a comprehensive study of the hydromorphological status of the river, four sections have been selected, where restoration measures can efficiently improve the river habitat conditions. For each of these sections we propose a set of technical and biological measures. One of the proposed solutions, investigated as a pilot project, was to construct plant barriers (sediment traps—vegetative baskets). Systematic measurements were carried out during one and a half year. These measurements provided information on the possible consequences of such actions in terms of hydromorphological changes.
Tomasz Kałuża; Krzysztof Szoszkiewicz; Artur Radecki-Pawlik; Natalia Walczak; Karol Plesiński. Impact of River Restoration on Hydromorphological Processes: The River Flinta as a Case Study. Flood Risk in the Upper Vistula Basin 2016, 183 -196.
AMA StyleTomasz Kałuża, Krzysztof Szoszkiewicz, Artur Radecki-Pawlik, Natalia Walczak, Karol Plesiński. Impact of River Restoration on Hydromorphological Processes: The River Flinta as a Case Study. Flood Risk in the Upper Vistula Basin. 2016; ():183-196.
Chicago/Turabian StyleTomasz Kałuża; Krzysztof Szoszkiewicz; Artur Radecki-Pawlik; Natalia Walczak; Karol Plesiński. 2016. "Impact of River Restoration on Hydromorphological Processes: The River Flinta as a Case Study." Flood Risk in the Upper Vistula Basin , no. : 183-196.
The work attempts to determine the impact of small hydrotechnical structures on channel hydromorphology as a measure of river restoration. The experiment was set up in Flinta River in Polish lowland where extensive hydromorphological survey was competed. At the first stage of restoration project...
Tomasz Kałuża; Krzysztof Szoszkiewicz; Ewelina Szałkiewicz. HYDROMORPHOLOGICAL EFFECT OF INTRODUCING SMALL WATER STRUCTURES IN RIVER RESTORATION – THE EXAMPLE OF PBHS IMPLEMENTATION. Journal of Ecological Engineering 2016, 17, 90 -96.
AMA StyleTomasz Kałuża, Krzysztof Szoszkiewicz, Ewelina Szałkiewicz. HYDROMORPHOLOGICAL EFFECT OF INTRODUCING SMALL WATER STRUCTURES IN RIVER RESTORATION – THE EXAMPLE OF PBHS IMPLEMENTATION. Journal of Ecological Engineering. 2016; 17 (2):90-96.
Chicago/Turabian StyleTomasz Kałuża; Krzysztof Szoszkiewicz; Ewelina Szałkiewicz. 2016. "HYDROMORPHOLOGICAL EFFECT OF INTRODUCING SMALL WATER STRUCTURES IN RIVER RESTORATION – THE EXAMPLE OF PBHS IMPLEMENTATION." Journal of Ecological Engineering 17, no. 2: 90-96.
Mateusz Hämmerling; Poznań University of Life Sciences; Natalia Walczak; Paweł Zawadzki; Tomasz Kałuża. Delay in the flow of plant debris on floodplains overgrown with shrub vegetation. Acta Scientiarum Polonorum Formatio Circumiectus 2015, 13, 95 -108.
AMA StyleMateusz Hämmerling, Poznań University of Life Sciences, Natalia Walczak, Paweł Zawadzki, Tomasz Kałuża. Delay in the flow of plant debris on floodplains overgrown with shrub vegetation. Acta Scientiarum Polonorum Formatio Circumiectus. 2015; 13 (4):95-108.
Chicago/Turabian StyleMateusz Hämmerling; Poznań University of Life Sciences; Natalia Walczak; Paweł Zawadzki; Tomasz Kałuża. 2015. "Delay in the flow of plant debris on floodplains overgrown with shrub vegetation." Acta Scientiarum Polonorum Formatio Circumiectus 13, no. 4: 95-108.
Natalia Walczak; Uniwersytet Przyrodniczy W Poznaniu; Tomasz Kałuża; Mateusz Hämmerling; Paweł Zawadzki; Zbigniew Walczak. The hydraulic losses on the grating due to organic material carried by water. Acta Scientiarum Polonorum Formatio Circumiectus 2015, 13, 247 -258.
AMA StyleNatalia Walczak, Uniwersytet Przyrodniczy W Poznaniu, Tomasz Kałuża, Mateusz Hämmerling, Paweł Zawadzki, Zbigniew Walczak. The hydraulic losses on the grating due to organic material carried by water. Acta Scientiarum Polonorum Formatio Circumiectus. 2015; 13 (4):247-258.
Chicago/Turabian StyleNatalia Walczak; Uniwersytet Przyrodniczy W Poznaniu; Tomasz Kałuża; Mateusz Hämmerling; Paweł Zawadzki; Zbigniew Walczak. 2015. "The hydraulic losses on the grating due to organic material carried by water." Acta Scientiarum Polonorum Formatio Circumiectus 13, no. 4: 247-258.
The values of hydraulic specifics of the prototypes of new DN 50, DN 80, DN 100, DN 150 and DN 200 strainers have proven their enhanced hydraulic properties. These are a result of both increased screening surface of the filter insert, as well as the improved shape of the filter bodies. These conclusions were confirmed in the course of examinations of the DN 80 and DN 200 filter bodies. The performed measurements of new filters with screen inserts have revealed an average growth of 43 % of the K v flow coefficient in case of all examined products. The maximum growth of the flow coefficient, amounting to 55 %, was recorded with regard to filter DN 200. During the tests also the possibility of estimating the Kv coefficient value was checked with regard to the entire filter series. By means of dimensional analysis and the similitude concept, on the basis of a given product it is possible to obtain Kv values of filters at a maximum tolerance of 10 %.
Tomasz Kałuża; Paweł Zawadzki. Flow Capacity Coefficient of Strainers. Flood Risk in the Upper Vistula Basin 2013, 159 -170.
AMA StyleTomasz Kałuża, Paweł Zawadzki. Flow Capacity Coefficient of Strainers. Flood Risk in the Upper Vistula Basin. 2013; ():159-170.
Chicago/Turabian StyleTomasz Kałuża; Paweł Zawadzki. 2013. "Flow Capacity Coefficient of Strainers." Flood Risk in the Upper Vistula Basin , no. : 159-170.
An analysis of tree stand stability relative to Institute of Meteorology and Water Management (IMGW) classification of maximum wind velocities Analysing tree susceptibility to uprooting one has to compare external power acting on a tree with its resistance to uprooting (critical moment). The critical uprooting moment for a tree depends on both plant parameters and substratum. Results of an assessment of critical moments of studied pine and black alder tree stands are presented in this paper. Field studies consisted of uprooting trees with parallel measurements of critical moments. Results were compared with the moments of uprooting power of extreme winds. These moments were related to classification of maximum wind velocities proposed by the Institute of Meteorology and Water Management (IMGW).
Tomasz Kałuża; Jacek Leśny. An analysis of tree stand stability relative to Institute of Meteorology and Water Management (IMGW) classification of maximum wind velocities. Journal of Water and Land Development 2009, 13a, 103 -113.
AMA StyleTomasz Kałuża, Jacek Leśny. An analysis of tree stand stability relative to Institute of Meteorology and Water Management (IMGW) classification of maximum wind velocities. Journal of Water and Land Development. 2009; 13a (1):103-113.
Chicago/Turabian StyleTomasz Kałuża; Jacek Leśny. 2009. "An analysis of tree stand stability relative to Institute of Meteorology and Water Management (IMGW) classification of maximum wind velocities." Journal of Water and Land Development 13a, no. 1: 103-113.