"Numerical Studies of Turbulent Separation in Forward Facing Step Flows Using k-e , SST, S-A and LES" by Carlos Velez

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Numerical Studies of Turbulent Separation in Forward Facing Step Flows Using k-e , SST, S-A and LES

Proceedings of the Aerospace Sciences Meeting (2013)

Carlos Velez, University of Central Florida
Marcel Ilie, Georgia Southern University

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Abstract

Computational studies of transient quasi-three-dimensional supersonic flows over a forward facing step are carried using the k - e, SST and SA turbulence models. Numerical computations are carries out for five different Reynolds numbers, Re=3.84x10^4-10^6. The numerical studies concern the influence of Reynolds number and step aspect ratio on the flow dynamics. The results show that the both parameters influence the flow field in a particular manner. With the increase of Reynolds number the flow separation occurs closer to the backstep. Flow reattachment is observed downstream the channel.

Keywords

Turbulent separation,
Step slows,
k-e,
SST,
S-A,
LES

Disciplines

Mechanical Engineering

Publication Date

January 7, 2013

Publisher

American Institute of Aeronautics and Astronautics

ISBN

978-1-62410-181-6

DOI

10.2514/6.2013-390

Citation Information

Carlos Velez and Marcel Ilie. "Numerical Studies of Turbulent Separation in Forward Facing Step Flows Using k-e , SST, S-A and LES" Grapevipe, TXProceedings of the Aerospace Sciences Meeting (2013)
Available at: http://works.bepress.com/marcel-ilie/40/