Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Study of Heat Transfer in Backward-Facing Step Flow Using Partially-Averaged Navier-Stokes (PANS) Turbulence Modeling Method
T. Korinek, T. Tisovsky
Abstract:
Backward facing step flow is one of the suitable cases for validation of a new turbulence model. The present study deals with numerical simulations of heat transfer from wall past the backward facing step. Numerical simulations are carried out using the Partially-Averaged Navier-Stokes method. The study was performed at Reynolds number ReH = 28000 that is based on the height of the step. An influence of physical resolution was studied using various ratios fk of unresolved to total resolved turbulent kinetic energy. Results from numerical simulations were compared with experimental data performed at the same ReH. The reattachment length varied with the fk ratio in a same way as the minimal value of the Skin friction coefficient and position of the peak of the Stanton number.
Keywords:
Partially-Averaged Navier-Stokes, heat transfer, turbulent flow, numerical simulation

Fulltext: PDF DOI: https://doi.org/10.14311/TPFM.2019.018

In Proceedings Topical Problems of Fluid Mechanics 2019, Prague, 2019 Edited by David Šimurda and Tomáš Bodnár, pp. 123-130 ISBN 978-80-87012-69-7 (Print) ISSN 2336-5781 (Print)