Water-Hammer Control in Pressurized-Pipe Flow Using a Branched Polymeric Penstock

Triki, Ali

doi:10.1061/(asce)ps.1949-1204.0000277

Cited by 51 publications

(13 citation statements)

References 25 publications

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“…Saemi et al [5] presented a study on two-and three-dimensional calculations of the water hammer flows using computational fluid dynamics (CFD) models. In addition, different studies present the water control issue [6][7][8]. Among the water hammer controlling methods, the air vessel protection device is studied widely due to high reliability [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of a Commercial Air Valve on the Rapid Filling of a Single Pipeline: a Numerical and Experimental Analysis

Coronado-Hernández

Besharat

Fuertes-Miquel

et al. 2019

Water

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The filling process in water pipelines produces pressure surges caused by the compression of air pockets. In this sense, air valves should be appropriately designed to expel sufficient air to avoid pipeline failure. Recent studies concerning filling maneuvers have been addressed without considering the behavior of air valves. This work shows a mathematical model developed by the authors which is capable of simulating the main hydraulic and thermodynamic variables during filling operations under the effect of the air valve in a single pipeline, which is based on the mass oscillation equation, the air-water interface, the polytropic equation of the air phase, the air mass equation, and the air valve characterization. The mathematical model is validated in a 7.3-m-long pipeline with a 63-mm nominal diameter. A commercial air valve is positioned in the highest point of the hydraulic installation. Measurements indicate that the mathematical model can be used to simulate this phenomenon by providing good accuracy.

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Section: Introductionmentioning

confidence: 99%

Effect of a Commercial Air Valve on the Rapid Filling of a Single Pipeline: a Numerical and Experimental Analysis

Coronado-Hernández

Besharat

Fuertes-Miquel

et al. 2019

Water

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“…The SWMM model was used to simulate the dynamics of the drainage system. SWMM is a dynamic rainfall-runoff, flow routing, and water quality modeling software, which has been widely used for urban drainage analysis and design (Gironás et al, 2010 (James et al, 2010;Meza & Oliva, 2003;Triki, 2017):…”

Section: Numerical Drainage Modelmentioning

confidence: 99%

A Disaggregation‐Emulation Approach for Optimization of Large Urban Drainage Systems

Seyedashraf

Bottacin‐Busolin

Harou

2021

Water Resources Research

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Multi‐objective optimization can help identify efficient and appealing designs of urban drainage systems. However, their application to large‐scale problems is hindered by the computational cost of urban drainage simulation. We propose a novel disaggregation approach that allows simulating a portion of a drainage network while the remaining part is represented by a surrogate model that maps changes in the region of interest to hydraulic head time‐series at synthetic nodes shared with the remaining part of the network. The proposed approach is demonstrated with an application to the many‐objective optimization of sustainable urban drainage systems in two urban areas. The design problem's decision variables include the types of sustainable drainage systems, their combination within a subcatchment, their surface areas and spatial distribution, whereas the objectives include the minimization of capital cost, flood volume, flood duration, and total suspended solids or average peak runoff. The results show that the proposed disaggregation‐emulation approach can provide an accurate representation of the system dynamics while significantly reducing the computational time compared to a model that simulates the whole network dynamics. Two alternative surrogate models are considered based on multilayer perceptron (MLP) and generalized regression neural networks (GRNN). MLP is found to be more accurate compared to GRNN at the cost of a larger computational time for the training process.

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“…Reliable numerical simulations are necessary to predict the intensity of extreme pressure and the most harmful locations along the system to avoid the occurrence of severe cases of water hammers. Moreover, numerical simulations are more effective in designers locating the pressure control devices and arranging suitable operations for them [9][10][11][12], with validations through experiments observing the devices' behavior and pressure change processes [13,14]. Due to developments in computer science, there are various numerical methods applied to transient fluids simulations, such as the finite difference method (FDM) [15] and finite element method (FEM) [16].…”

Section: Introductionmentioning

confidence: 99%

Investigation into Complex Boundary Solutions of Water Filling Process in Pipeline Systems

Zhang

Wan

Fan

2019

Water

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Boundary conditions are usually the key problem in the establishment of a numerical model for simulation. An algorithmic method is needed to obtain a concrete numerical solution when the combined controlling equation sets are difficult to solve analytically. In this research, a type of algorithm known as the double forward method (DFM) is proposed to solve complex boundary conditions. The accuracy of the DFM is controllable, and it was found to be reliable when applying it to the water filling process in a water supply pipeline system. The DFM can also be used to solve multidimensional problems. In addition, the established water filling model in this study combined an open channel flow and a pressured flow, and a surge tank boundary condition was developed to fit the entire water filling process.

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Water-Hammer Control in Pressurized-Pipe Flow Using a Branched Polymeric Penstock

Cited by 51 publications

References 25 publications

Effect of a Commercial Air Valve on the Rapid Filling of a Single Pipeline: a Numerical and Experimental Analysis

Effect of a Commercial Air Valve on the Rapid Filling of a Single Pipeline: a Numerical and Experimental Analysis

A Disaggregation‐Emulation Approach for Optimization of Large Urban Drainage Systems

Investigation into Complex Boundary Solutions of Water Filling Process in Pipeline Systems

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