Numerical simulation of 3D backward facing step flows at various Reynolds numbers

0451251 - ÚT 2016 RIV FR eng C - Conference Paper (international conference)
Louda, Petr - Příhoda, Jaromír - Kozel, K.
Numerical simulation of 3D backward facing step flows at various Reynolds numbers.
EFM14 - EXPERIMENTAL FLUID MECHANICS 2014. Paris: E D P SCIENCES, 2015 - (Vít, T.; Dančová, P.), s. 02049-02049. EPJ Web of Conferences, 92. ISSN 2100-014X.
[Experimental Fluid Mechanics 2014. Český Krumlov (CZ), 18.11.2014-21.11.2014]
R&D Projects: GA ČR GAP101/10/1230
Institutional support: RVO:61388998
Keywords : backward facing step * EARSM turbulence model * turbulent flow
Subject RIV: BK - Fluid Dynamics

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.
Permanent Link: http://hdl.handle.net/11104/0254588