Modification of SA model for predicting airfoil flow separation

Dagao Zhou; Yangwei Liu; Xiaoqing Wen; Lipeng Lu

Modification of SA model for predicting airfoil flow separation

Dagao Zhou^*
, Yangwei Liu
, Xiaoqing Wen
, Lipeng Lu

^*Corresponding author for this work

School of Energy and Power Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Two-dimensional numerical simulation of airfoil S825 with Spalart-Allmaras(SA) turbulent model was presented. The simulation results were compared with the experiment results. As SA turbulent model could not simulate the flow separation accurately at the rear region of the airfoil, the strongly non-equilibrium turbulence transport nature in the separate region was analyzed. The non-equilibrium turbulence transport nature was closely related to the constant C_b1 in SA model. A method of modifying the constant C_b1 was adopted in SA model, and the simulation results show that the method simulates the flow separation more accurately.

Original language	English
Pages (from-to)	1384-1388
Number of pages	5
Journal	Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics
Volume	38
Issue number	10
State	Published - Oct 2012

Keywords

Flow separation
S825
Turbulence transport nature
Turbulent model

Cite this

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title = "Modification of SA model for predicting airfoil flow separation",

abstract = "Two-dimensional numerical simulation of airfoil S825 with Spalart-Allmaras(SA) turbulent model was presented. The simulation results were compared with the experiment results. As SA turbulent model could not simulate the flow separation accurately at the rear region of the airfoil, the strongly non-equilibrium turbulence transport nature in the separate region was analyzed. The non-equilibrium turbulence transport nature was closely related to the constant Cb1 in SA model. A method of modifying the constant Cb1 was adopted in SA model, and the simulation results show that the method simulates the flow separation more accurately.",

keywords = "Flow separation, S825, Turbulence transport nature, Turbulent model",

author = "Dagao Zhou and Yangwei Liu and Xiaoqing Wen and Lipeng Lu",

year = "2012",

month = oct,

language = "英语",

volume = "38",

pages = "1384--1388",

journal = "Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics",

issn = "1001-5965",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

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TY - JOUR

T1 - Modification of SA model for predicting airfoil flow separation

AU - Zhou, Dagao

AU - Liu, Yangwei

AU - Wen, Xiaoqing

AU - Lu, Lipeng

PY - 2012/10

Y1 - 2012/10

N2 - Two-dimensional numerical simulation of airfoil S825 with Spalart-Allmaras(SA) turbulent model was presented. The simulation results were compared with the experiment results. As SA turbulent model could not simulate the flow separation accurately at the rear region of the airfoil, the strongly non-equilibrium turbulence transport nature in the separate region was analyzed. The non-equilibrium turbulence transport nature was closely related to the constant Cb1 in SA model. A method of modifying the constant Cb1 was adopted in SA model, and the simulation results show that the method simulates the flow separation more accurately.

AB - Two-dimensional numerical simulation of airfoil S825 with Spalart-Allmaras(SA) turbulent model was presented. The simulation results were compared with the experiment results. As SA turbulent model could not simulate the flow separation accurately at the rear region of the airfoil, the strongly non-equilibrium turbulence transport nature in the separate region was analyzed. The non-equilibrium turbulence transport nature was closely related to the constant Cb1 in SA model. A method of modifying the constant Cb1 was adopted in SA model, and the simulation results show that the method simulates the flow separation more accurately.

KW - Flow separation

KW - S825

KW - Turbulence transport nature

KW - Turbulent model

UR - https://www.scopus.com/pages/publications/84869152262

M3 - 文章

AN - SCOPUS:84869152262

SN - 1001-5965

VL - 38

SP - 1384

EP - 1388

JO - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

JF - Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics

IS - 10

ER -

Modification of SA model for predicting airfoil flow separation

Abstract

Keywords

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