Transitional wave configurations between Type III and Type IV oblique-shock/bow-shock interactions |
| |
Institution: | 1. State Key Laboratory of High-temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;2. The System Design Institute of Mechanical-Electrical Engineering, Beijing 100854, China;3. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China |
| |
Abstract: | The interactions of oblique/bow shock waves are the key flow phenomena restricting the design and aerothermodynamic performance of high-speed vehicles. Type III and Type IV Shock/Shock Interactions(SSIs) have been extensively investigated, as such interactions can induce abnormal aerodynamic heating problems in hypersonic flows of vehicles. The transition process between these two distinct types of shock/shock interactions remains unclear. In the present study, a subclass of shock/shock interaction configuration is revealed and defined as Type IIIa. Type IIIa interaction can induce much more severe aerodynamic heating than a Type IV interaction which was ever reported to be the most serious in literature. The intense aerodynamic heating observed in this configuration highlights a new design point for the thermal protection system of hypersonic vehicles. A secondary Mach interaction between shock waves in the supersonic flow path of a Type III configuration is demonstrated to be the primary mechanism for such a subclass of shock/shock interaction configuration. |
| |
Keywords: | Shock interactions Transitional configuration Aerodynamic heating Shear layer Mach interaction |
本文献已被 ScienceDirect 等数据库收录! |
|