Numerical study of an airfoil with riblets installed based on large eddy simulation
Numerical study of an airfoil with riblets installed based on large eddy simulation
复制标题
基于大涡模拟的带肋翼型数值研究
DOI：
10.1016/j.ast.2018.05.013
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发表时间：
2018-07
影响因子：
5.6
通讯作者：
Wenjiao Dong
中科院分区：
文献类型：
--
作者：
Yufei Zhang;Haixin Chen;Song Fu;Wenjiao Dong
采用隐式大涡模拟方法对低速翼型脊状减阻进行了研究。数值方法通过一侧安装流向脊的槽道流动进行了测试。平均速度剖面、速度均方根和雷诺切应力与参考直接数值模拟数据吻合较好。其次，对一种E374翼型在来流马赫数为0.2，攻角为3°，雷诺数为2.0 × 10 ~ 5的条件下进行了数值模拟。模拟的翼型绕流与实验数据吻合较好。在翼型上沿流向沿着设置等腰三角形肋，可以提高翼型的升力系数，减小翼型的摩擦阻力。翼型上的压力分布略有变化，对应于增加的压阻。在压力梯度较大的区域，沟槽的存在大大降低了雷诺应力。压力功率谱密度的计算结果表明，在翼型表面设置脊膜后，翼型表面的高频脉动得到了抑制，边界层中的旋涡结构也得到了减少。
The implicit large eddy simulation method is applied in a riblet drag reduction study of a low-speed airfoil. The numerical method is tested by a channel flow with streamwise riblets installed on one side. The mean velocity profile, root mean square of velocity and Reynolds shear stress match well with reference direct numerical simulation data. Next, numerical investigation is conducted on an airfoil called Eppler E374 at free stream Mach number 0.2, angle of attack 3° and Reynolds number 2.0 × 105. The simulated flow around the airfoil without or with a numerical trip is in good agreement with the experimental data. When isosceles triangle riblets are installed on the airfoil along the streamwise direction, the lift coefficient is increased, and the friction drag is decreased. The pressure distribution on the airfoil is slightly changed, corresponding to the increased pressure drag. The Reynolds stresses are greatly reduced by the riblets at locations of strong pressure gradient. The result of the power spectrum density of pressure shows that the high-frequency fluctuations are suppressed when the riblet film is installed on the airfoil, and the vortex structures in the boundary layer are also reduced.
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影响因子：
3.7
作者：
GOLDSTEIN, D;HANDLER, R;SIROVICH, L
通讯作者：
SIROVICH, L
DOI：
10.2514/6.2010-4706
发表时间：
2010-06
期刊：
--
影响因子：
--
作者：
Stephan KlumppThomas Guldner;M. Meinke
通讯作者：
Stephan KlumppThomas Guldner;M. Meinke
DOI：
10.1007/s10494-015-9624-2
发表时间：
2015-06
期刊：
Flow, Turbulence and Combustion
影响因子：
--
作者：
A. Bannier;E. Garnier;P. Sagaut
通讯作者：
A. Bannier;E. Garnier;P. Sagaut
DOI：
10.2514/6.1997-511
发表时间：
1997
期刊：
--
影响因子：
--
作者：
C. A. Lyon;M. Selig;Andy P. Broeren
通讯作者：
C. A. Lyon;M. Selig;Andy P. Broeren
影响因子：
2.5
作者：
B. Aupoix;G. Pailhas;R. Houdeville
通讯作者：
B. Aupoix;G. Pailhas;R. Houdeville