Abstract
Numerical simulations are performed to investigate the effects of super-elliptic film holes on adiabatic film cooling effectiveness under three blowing ratios (M = 0.5, 1.0, 1.5). The results show that compared with the basic circular model, super-elliptic model I with length-to-width ratio of 2 provides the better film cooling effectiveness in the range of x/D < 5 at M = 0.5 while at M = 1.0 the better film cooling effectiveness is observed in the range of x/D <17.35 and at M = 1.5 the higher film cooling performance is shown along the mainstream direction. However, due to the large laterally coverage of the film, super-elliptic model II with length-to-width ratio of 4 exhibits the best film cooling effectiveness at three different blowing ratios among all models. Such advantages become more significant with the increase of the blowing ratio.
| Translated title of the contribution | Effect of Super-Elliptic Film Holes on Adiabatic Film Cooling Effectiveness |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 427-434 |
| Number of pages | 8 |
| Journal | Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics |
| Volume | 50 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Aug 2018 |