Abstract
Effect of the relative position between film cooling holes and ribs on the film cooling effectiveness and heat transfer in a channel with cross-flow and ribs was investigated numerically. The effect of position where film cooling holes were close to upstream ribs, downstream ribs and in the middle region of ribs on the cooling effect was studied with blowing ratio of 0.5, 1 and 2, with cross-flow ratio of 0.39, 0.585 and 0.78. The results show that, in the case of the film cooling hole entrance in the middle of two ribs, the flow in the hole are influenced heavily by the entrance jet, the heat transfer coefficient and film cooling effectiveness are higher. In the case of the film cooling hole entrance near the up-stream rib, the heat transfer coefficient and film cooling effectiveness are lower.
| Original language | English |
|---|---|
| Pages (from-to) | 1340-1346 |
| Number of pages | 7 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 27 |
| Issue number | 6 |
| State | Published - Jun 2012 |
Keywords
- Cross-flow passage
- Film cooling
- Numerical simulation
- Relative position
- Rib