分离涡模型(DES,Detached eddy simulation)兼有雷诺时均湍流模型计算量较小和大涡模拟计算精度高的优点.本文利用DES对平板单斜圆柱孔的气膜冷却进行了数值模拟,并将结果同RANS湍流模型的计算结果以及实验数据相比较,表明DES能有效弥补RANS湍流模型在计算三维不均匀非定常湍流场的不足,更接近实际地反映了气膜冷却中的流动和换热的本质规律.
参考文献
| [1] | P R Spalart;W-H Jou;M Strelets.Comments on the Feasibility of LES for Wings, and on a Hybrid RaNS/LES Approach. Advances in DNS/LES[M].Columbus Ohio: Greyden Press,1997 |
| [2] | S Kapadia;S Roy .Detached Eddy Simulation of Turbine Blade Cooling[R].AIAA-2003-3632,2003. |
| [3] | A K Sinha;D G Bogard;M E Crawford .Film-Cooling Effectiveness Downstream of a Single Row of Holes with Variable Density Ratio[J].Journal of Turbomachinery,Transactions of the ASME,1991,113:442-449. |
| [4] | D. K. Walters;J. H. Leylek .A systematic computational methodology applied to a three-dimensional film-cooling flowfield[J].Journal of turbomachinery,1997(4):777-785. |
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%