An Investigation of Low-Reynolds-number Flows past Airfoils
An Investigation of Low-Reynolds-number Flows past Airfoils
复制标题
DOI：
10.2514/6.2005-4607
复制
发表时间：
2005-06
期刊：
影响因子：
--
通讯作者：
W. Yuan;M. Khalid;Jan Windte;U. Scholz;R. Radespiel
中科院分区：
文献类型：
--
作者：
W. Yuan;M. Khalid;Jan Windte;U. Scholz;R. Radespiel
本文研究了Re = 60 K时绕SD 7003翼型的低雷诺数流动，转捩发生在层流分离泡（LSB）上。对实验测量和数值计算结果进行了分析和讨论。特别是采用三种不同的数值方法得到了相当好的结果：大涡模拟（LES）显示了不同转捩阶段的涡结构，以及转捩自然发生的位置;非定常雷诺平均Navier-Stokes（URANS）模拟了几种基于ω-长度尺度方程的湍流模型，并与线性稳定性求解器耦合以预测转捩点;使用低Re k-e湍流模型进行的URANS模拟，其中通过阻尼函数在近壁层流区域抑制涡动粘度。
This paper presents an investigation of low-Reynolds-number flows past an SD7003 airfoil at Re = 60K, where transition takes place across a laminar separation bubble (LSB). Results of experimental measurements and numerical calculations are analyzed and discussed. In particular, reasonably good results were obtained using three different numerical approaches: Large-eddy simulation (LES) that demonstrated vortical structures at different transition stages, and where the transition occurred naturally; unsteady Reynolds-averaged Navier-Stokes (URANS) simulations for several turbulence models based on the ω-length-scale equation, coupled to a linear stability solver to predict transition point; URANS simulations using a low-Re k-e turbulence model, where eddy viscosity was suppressed in the near-wall laminar region by damping functions.