Dr. Bruno Brunone
Department of Civil and Environmental Engineering, University of Perugia, Perugia, Italy
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Academic Career Length
39Years (1988-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 September 1999 in Journal of Water Resources Planning and Management
Journal Article
Bruno BrunoneA technique is proposed for leak detection and evaluation in outfall pipes based on properties of transient pressure waves. Transients are caused by an increase of the piezometric head at the initial section of the outfall pipe. Since high overpressures are not necessary for the success of the technique and simple equipment is required, tests may be repeated periodically to check the state of the pipe. In order to verify the possibility of locating a possible leak on the basis of the results of transient tests, the effects of a leak on wave propagation from the numerical point of view are discussed first. A first-order formula for preliminary evaluation of the discharge behavior of the leak is also given. Results of some laboratory tests carried out on a long pipe are shown in order to confirm the reliability and validity of the proposed technique. Inverse transient calculations are proved to be able to provide precise information about the characteristics of the leak.
1 July 2000 in Journal of Water Resources Planning and Management
Journal Article
Bruno Brunone
Bryan KarneyMMMichele Mecarelli
Michele Mecarelli
MFMarco Ferrante
Marco FerranteTransient conditions in closed conduits have traditionally been modeled as 1D flows with the implicit assumption that velocity profile and friction losses can be accurately predicted using equivalent 1D velocities. Although more complex fluid models have been suggested, there has been little direct experimental basis for selecting one model over another. This paper briefly reviews the significance of the 1D assumption and the historical approaches proposed for improving the numerical modeling of transient events. To address the critical need for better data, an experimental apparatus is described, and preliminary measurements of velocity profiles during two transient events caused by valve operation are presented. The velocity profiles recorded during these transient events clearly show regions of flow recirculation, flow reversal, and an increased intensity of fluid turbulence. The experimental pressures are compared to a water hammer model using a conventional quasi-steady representation of head loss an...
1 January 2003 in Advances in Water Resources
Journal Article
MFMarco Ferrante
Marco FerranteBruno Brunone1 November 2001 in Journal of Hydraulic Research
Journal Article
Bruno BrunoneMFMarco Ferrante
Marco FerranteReliable and quick techniques are needed to locate and estimate leaks in pressurised pipe systems in order to reduce water loss as much as possible. The aim of the present paper is to show that the use of unsteady-state tests, which give rise to small overpressure, can be considered as an appropriate method. During these tests, it is necessary to record the pressure-time history - the ‘pressure signal’ - in just one section of the pipe, the ‘measurement section’. On the basis of a thorough laboratory investigation, the influence on the pressure signal of size and shape of small leaks, along with discharge conditions and initial flow regime, is analysed. Some remarks about the possible applicability of the obtained results to pipes of different material can be found. A reliable criterion is provided for a first-approximation estimation of leak size, based on the results of an inverse method procedure concerning pressure signals.
1 December 1995 in Journal of Hydraulic Engineering
Journal Article
The paper discusses the rapid damping of pressure peaks in a water-hammer phenomenon after the end of a complete valve-closure maneuver. This effect is due to flow characteristics not considered when one-dimensional models are employed. Such an effect is linked to the cross-sectional velocity profiles, and therefore to the intrinsic two-dimensionality of the flow field. Applying a 2-D model, recently proposed in the literature, to expand the limited experimental data available with numerical results, useful information on the evolution of the velocity profiles during a transient has been obtained. Starting from an in-depth inspection of the terms in the momentum equation, an additional term is introduced to model the effects of the flow-field two-dimensionality in a 1-D formulation. Finally, the adequacy of a relationship previously proposed by the writers to evaluate the additional term is specifically showed for fast transients in the field of low-Reynolds-number flows when no cavitation occurs, even if its validity has been proven elsewhere for rather different conditions.
1 April 1998 in Advances in Water Resources
Journal Article
About Me
Patrizia Piro is currently Full Professor of Hydraulic Infrastructures at the University of Calabria. Her research focused on water resources engineering and urban hydraulics, with particular expertise in urban drainage systems, flood risk in urban areas, and sustainable hydraulic solutions such as NBS and LID.
Bruno Brunone is currently Full Professor of Hydraulic Infrastructures at the University of Perugia. His research focuses on hydraulic transients in pressurized pipe systems, transient test-based techniques for fault and leak detection, unsteady friction modeling, and the behavior of viscoelastic pipes.
Federico Roman currently serving as Associate Professor of Hydraulic Infrastructures at the University of Trieste. His research focuses on CFD, small-scale environmental flows, hydraulic risk assessment, and sustainable solutions for urban resilience to climate change.
Michele Turco is currently Tenure-Track Assistant Professor at the University of Calabria. His research focuses on urban hydrology, Sustainable Urban Drainage Systems (SuDS), Nature-based Solutions (NBS), hydrological–hydraulic modeling, and numerical investigation of flow and transport processes in porous media.
Umberto Sanfilippo is currently Assistant Professor at Politecnico di Milano. His research include urban drainage systems modeling, real-time control of urban drainage systems, decision support systems for water management, urban flood protection by developing SUDS to mitigate flooding impacts