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DNS of a Backward-Facing Step at high Reynolds number. Towards a better understanding of RANS-LES transition in DES models

Author
Pont, A.; Trias, F. X.; Oliva, A.
Type of activity
Presentation of work at congresses
Name of edition
10th International Conference on Computational Fluid Dynamics
Date of publication
2018
Presentation's date
2018-07-09
Book of congress proceedings
ICCFD10 Proceedings
First page
1
Last page
9
Repository
http://hdl.handle.net/2117/127617 Open in new window
Abstract
A DNS of an incompressible fluid flow over a Backward Facing Step (BFS ) with an Expansion Ratio (ER ) equal to 2, ER = H/(H - h), has been performed. Where h and H represent the step and the outlet heights, respectively. A turbulent channel flow at Ret = 395 has been used as an inflow. The DNS data has been compared with the results obtained by a DDES-SA turbulence model, to assess the non-zonal model accuracy. Particular attention has been paid to the Grey Area (GA ), where the effects of the ...
Citation
Pont, A.; Trias, F. X.; Oliva, A. DNS of a Backward-Facing Step at high Reynolds number. Towards a better understanding of RANS-LES transition in DES models. A: International Conference on Computational Fluid Dynamics. "ICCFD10 Proceedings". 2018, p. 1-9.
Keywords
Detached Eddy Simulation., Direct Numerical Simulation, Turbulence Modeling
Group of research
CTTC - Heat and Mass Transfer Technological Center

Participants