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2-방정식 난류모델을 이용한 고양력 익형 주위의 비압축성/압축성 유동장해석
Incompressible/Compressible Flow Analysis over High-Lift Airfoils Using Two-Equation Turbulence Models

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Authors
김창성; 김종암; 노오현
Issue Date
1999-06
Publisher
한국전산유체공학회
Citation
한국전산유체공학회지, Vol.4 No.1, pp. 53-60
Keywords
공학고양력 익형High-Lift Airfoil2-방정식 난류 모델Two-Equation Turbulence
Model
Chimera 겹침 격자 기법
Abstract
Two-dimensional, unsteady, incompressible and compressible Navier-Stokes codes are developed for the computation of the viscous turbulent flow over high-lift airfoils. The compressible code involves a conventional upwind-differenced scheme for the convective terms and LU-SGS scheme for temporal integration. The incompressible code with pseudo-compressibility method also adopts the same schemes as the compressible code. Three two-equation turbulence models are evaluated by computing the flow over single and multi-element airfoils. The compressible and incompressible codes are validated by predicting the flow around the RAE 2822 transonic airfoil and the NACA 4412 airfoil, respectively. In addition, both the incompressible and compressible code are used to compute the flow over the NLR 730 I airfoil with flap to study the compressible effect near the high-loaded leading edge. The grid systems are efficiently generated using Chimera overlapping grid scheme. Overall, the k-w SST model shows closer agreement with experiment results, especially in the prediction of adverse pressure gradient region on the suction surfaces of high-lift airfoils.
Language
Korean
URI
http://hdl.handle.net/10371/82473
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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