کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
755524 | 1462542 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Numerical Study of Flow and Heat Transfer Characteristics of Impingement/Effusion Cooling Numerical Study of Flow and Heat Transfer Characteristics of Impingement/Effusion Cooling](/preview/png/755524.png)
Three-dimensional numerical simulation is carried out to investigate the flow and heat transfer characteristics of impingement/effusion cooling systems. The impingement/effusion holes are arranged on two parallel perforated plates respectively in a staggered manner. Every effusion hole has an inclined angle of 30° with respect to the surface. The two parallel plates are spaced three times the diameter of the effusion hole. The ratio of center-to-center spacing of adjacent holes to the diameter of the effusion hole is set to be 3.0, 4.0 and 5.0 respectively. The flow field, temperature field and wall film cooling effectiveness are calculated for different blowing ratios ranging from 0.5 to 1.5. In general, the wall cooling effectiveness increases as the center-to-center spacing of adjacent holes decreases or the blowing ratio increases.
Journal: Chinese Journal of Aeronautics - Volume 22, Issue 4, August 2009, Pages 343-348