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

Carlos Velez; Marcel Ilie

doi:10.2514/6.2013-390

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

Carlos Velez, Marcel Ilie

Mechanical Engineering

University of Central Florida

Research output: Contribution to book or proceeding › Chapter

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.

Original language	American English
Title of host publication	Proceedings of the Aerospace Sciences Meeting
DOIs	https://doi.org/10.2514/6.2013-390
State	Published - Jan 7 2013

Keywords

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

DC Disciplines

Mechanical Engineering

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

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

author = "Carlos Velez and Marcel Ilie",

year = "2013",

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doi = "10.2514/6.2013-390",

language = "American English",

booktitle = "Proceedings of the Aerospace Sciences Meeting",

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T1 - Numerical Studies of Turbulent Separation in Forward Facing Step Flows Using k-e , SST, S-A and LES

AU - Velez, Carlos

AU - Ilie, Marcel

PY - 2013/1/7

Y1 - 2013/1/7

N2 - 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.

AB - 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.

KW - LES

KW - S-A

KW - SST

KW - Step slows

KW - Turbulent separation

KW - k-e

UR - https://doi.org/10.2514/6.2013-390

U2 - 10.2514/6.2013-390

DO - 10.2514/6.2013-390

M3 - Chapter

BT - Proceedings of the Aerospace Sciences Meeting

ER -

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

Abstract

Keywords

DC Disciplines

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