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| Thermal Increment of Hypersonic Flight Vehicles with Non-jet Heterotypic Film Cooling Hole |
| Received:August 13, 2018 Revised:November 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.11.003 |
| KeyWord:hypersonic flight vehicles film cooling heterotypic hole thermal increment CFD |
| Author | Institution |
| SHANG Sheng-fei |
1. Beijing Institute of Spacecraft Environment Engineering, Beijing , China;2. Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing , China |
| XIANG Shu-hong |
1. Beijing Institute of Spacecraft Environment Engineering, Beijing , China;2. Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing , China |
| YANG Yan-jing |
1. Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
| JIANG Li-xiang |
1. Beijing Institute of Spacecraft Environment Engineering, Beijing , China;2. Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing , China |
| AN Yi-ran |
3. Peking University, Beijing , China |
| SONG Xu-dong |
3. Peking University, Beijing , China |
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| Abstract: |
| Objective To obtain the thermal increment of hypersonic flight vehicles with non-jet heterotypic film cooling hole. Methods The wall heat flux distribution was researched in three operating conditions (non-hole case (Case 1), heterotypic film cooling hole with jet case (Case 2) and heterotypic film cooling hole without jet case (Case 3)) at 50 km and 15 Ma with computational fluid mechanics (CFD). Results The maximum heat flux of non-hole case was 2.2 MW/m2, and distributed in the stagnation point of the head. For the Case 2, the maximum heat flux was 1.4 MW/m2, did not cover the lateral hole. The maximum heat flux of Case 3 was more than 3.3 MW/m2, and distributed near the holes. Conclusion When film cooling is used for surface hole of hypersonic flight vehicles, if the film hole does not inject air flow for some reasons, the heat current flow near the hole or even the hole stagnation area might increase significantly. |
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