文章基本信息

标题：Numerical Investigation Of Flow Transition For Naca-4412 Airfoil Using Computational Fluid Dynamics
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作者：RAVI.H.C ; MADHUKESHWARA.N ; S.KUMARAPPA 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：7
页码：2778
出版社：S&S Publications
摘要：Numerical investigation of aerodynamics phenomena in the post stall region using Computational FluidDynamics is critical task due to the strong vortex dynamics involved. Literatures cited in this filed indicates that the Turbulencemodels employed in most of the commercial CFD software’s will assume the boundary layer around the airfoil as fullyturbulent and hence the physical phenomena is wrongly addressed and also this approximation will lead to deviation in resultsfrom experimentally measured data in the post stall region. Research in this area concluded that the flow transition (boundarylayer transition) from laminar to turbulent around the surface of the airfoil needs to be properly implemented in CFD analysis inorder to have a reliable prediction in post stall region. This work aims in predicting the flow transition from laminar to turbulentfor flow over NACA4412 airfoil in the incompressible flow regime.CFD analysis methodology involves the use of MentorsShear Stress Transport Turbulence model(k-ω model)with transitional flow option.CFD analysis results are compared with windtunnel test data.CFD analysis is also carried out with Spalart allmaras turbulence model which assumes the boundary layer asfully turbulent.
关键词：CFD; Transition; SST model; Turbulence; Stall