Prediction of turbulent flow over the inclined step by means of various two-equation turbulence models

0333366 - ÚT 2010 RIV CZ eng C - Conference Paper (international conference)
Janeček, Vladislav - Příhoda, Jaromír
Prediction of turbulent flow over the inclined step by means of various two-equation turbulence models.
International Conference Experimental Fluid Mechanics 2009 - Conference Proceedings. Liberec: Technical University of Liberec, 2009 - (Vít, T.; Dančová, P.; Dvořák, V.), s. 92-97. ISBN 978-80-7372-538-9.
[International Conference Experimental Fluid Mechanics 2009. Liberec (CZ), 25.11.2009-27.11.2009]
R&D Projects: GA ČR GA101/07/1508; GA ČR GA103/09/0977
Institutional research plan: CEZ:AV0Z20760514
Keywords : flow over inclined step * turbulence modelling * flow separation
Subject RIV: BK - Fluid Dynamics

The work deals with the numerical simulation of turbulent flow over an inclined step in a channel of the rectangular cross-section according to measurement of Makiola (1992). The simulation was carried out by means of the commercial software ANSYS FLUENT with users defined functions. Various two-equation turbulence models based on the k-eps formulation were tested with the aim to estimate their ability to predict the extent of the separation region and energy losses due to inclined step with the angle 15 deg. Numerical results were compared with experimental data from LDA measurements. Besides, determined energy losses were compared with losses in a channel with a backward-facing step.
Permanent Link: http://hdl.handle.net/11104/0178366