Reynolds-averaged Navier-Stokes simulation of low-Reynolds-number airfoil aerodynamics

被引：0
|
作者：
Tang, Lei [1 ,2 ,3 ]
机构：
[1] ZONA Technology, Inc., Scottsdale, AZ 85258, United States
[2] DandP LLC, Phoenix, AZ 85018, United States
[3] AIAA
来源：
Journal of Aircraft | 1600年 / 45卷 / 03期
关键词：
A simple procedure has been developed to improve Reynolds-averaged Navier-Stokes simulation of low-Reynolds-number airfoil aerodynamics; especially the laminar separation bubble. First; a laminar Navier-Stokes computation is performed for the selected low-Reynolds-number SD7003 airfoil case. The importance of sufficient grid resolution in the normal direction and numerical iteration has been emphasized for achieving a relatively stable; time-averaged; two-dimensional; laminar separation solution. Based on this laminar solution; the separation-induced transition is determined as the point at which the tangential velocity adjacent to the solid surface reverses its direction for the second time after the laminar separation. Then a Reynolds-averaged Navier-Stokes computation is further performed with zero production terms in the selected turbulence model before the transition point and with the complete turbulence model after the transition point. As a result; similar to large-eddy simulation and direct numerical simulation; a Reynolds-averaged Navier-Stokes approach using the Spalart-Allmaras model is able to capture a laminar separation bubble without any external transition mechanism. The robustness of the approach is validated with several other low-Reynolds-number airfoil cases. Copyright © 2007 by the American Institute of Aeronautics and Astronautics; Inc. All rights reserved;
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摘要：
Conference article (CA)
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页码：848 / 856
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