Numerical simulation of 3D backward facing step flows at various Reynolds numbers
1 Institute of Thermomechanics AS CR, Prague, Czech Republic
2 Czech Technical University in Prague, Czech Republic
a e-mail: firstname.lastname@example.org
Published online: 6 May 2015
The work deals with the numerical simulation of 3D turbulent flow over backward facing step in a narrow channel. The mathematical model is based on the RANS equations with an explicit algebraic Reynolds stress model (EARSM). The numerical method uses implicit finite volume upwind discretization. While the eddy viscosity models fail in predicting complex 3D flows, the EARSM model is shown to provide results which agree well with experimental PIV data. The reference experimental data provide the 3D flow field. The simulations are compared with experiment for 3 values of Reynolds number.
Key words: backward facing step – EARSM turbulence model
© Owned by the authors, published by EDP Sciences, 2015
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