本文采用CFD数值模拟的方法对二维光滑平板阻力进行计算,与经典理论公式比较,以验证CFD方法的可靠性.从已有的肋条减限的实验结论出发,对带有肋条结构的平板与光滑平板的阻力进行CFD计算,经对比带肋条平板的阻力减小18.39%.分析数值模拟结果的速度场.涡量场等,初步得到肋条结构减阻的机理.肋条顶部产生的两个方向相反的旋涡,是实现减阻的主要原因.
参考文献
[1] | O.A. El-Samni;H.H. Chun;H.S. Yoon .Drag reduction of turbulent flow over thin rectangular riblets[J].International journal of engineering science,2007(2/8):436-454. |
[2] | P.R. Viswanath .Aircraft viscous drag reduction using riblets[J].Progress in aerospace sciences,2002(6/7):571-600. |
[3] | S. Sundaram;P. R. Viswanath;S. Rudrakumar .Viscous Drag Reduction Using Riblets on NACA 0012 Airfoil to Moderate Incidence[J].AIAA journal,1996(4):676-682. |
[4] | Bechert DW.;Hage W.;Bruse M. .Experiments with three-dimensional riblets as an idealized model of shark skin[J].Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow,2000(5):403-412. |
[5] | D.W. Bechert;M. Bruse;W. Hage;R. Meyer .Fluid Mechanics of Biological Surfaces and their Technological Application[J].Naturwissenschaften,2000(4):157-171. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%