Progress in Computational Fluid Dynamics, ( ISI ), Volume (19), No (1), Year (2019-1) , Pages (22-34)

Title : ( Flow simulation over a triangular labyrinth side weir in a rectangular channel )

Authors: Ali Naghi Ziaei , Neda S.R. Nikou , Ali Beyhaghi , Fatemeh Attarzadeh , Saeed Reza Khodashenas ,

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Abstract

Labyrinth side weirs are used as regulator outlets in river diversion structures , water conveyance systems and sewer networks . Herein , the flow around triangular labyrinth side weir with three different included angles -θ = 45 , 60 and 90°- were numerically studied . The 3D RANS equations were solved and VOF method was implemented for free-surface tracking . Different boundary conditions and geometric dimensions were examined and their results were compared with experimental data. Different two-equation turbulence models were implemented. The water depth profiles and overflow discharge were compared with experimental results. The root mean square error of simulated water depth profile using standard k-ε model was less than 1 mm. The diverted water discharge was computed with relative error less than 0.7%. The discharge of the labyrinth side weir was 1.7, 1.33 and 1.25 times the discharge of an equivalent normal side weir for θ = 45 , 60 and 90°, respectively.

Keywords

: numerical modelling; boundary conditions; discharge coefficient; flow pattern; CFD.
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@article{paperid:1072982,
author = {Ziaei, Ali Naghi and Neda S.R. Nikou and Ali Beyhaghi and Attarzadeh, Fatemeh and Khodashenas, Saeed Reza},
title = {Flow simulation over a triangular labyrinth side weir in a rectangular channel},
journal = {Progress in Computational Fluid Dynamics},
year = {2019},
volume = {19},
number = {1},
month = {January},
issn = {1468-4349},
pages = {22--34},
numpages = {12},
keywords = {: numerical modelling; boundary conditions; discharge coefficient; flow pattern; CFD.},
}

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%0 Journal Article
%T Flow simulation over a triangular labyrinth side weir in a rectangular channel
%A Ziaei, Ali Naghi
%A Neda S.R. Nikou
%A Ali Beyhaghi
%A Attarzadeh, Fatemeh
%A Khodashenas, Saeed Reza
%J Progress in Computational Fluid Dynamics
%@ 1468-4349
%D 2019

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