Mach reflection of a plane shock wave passing a mountain of 45° inclination |
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Authors: | Huang Wensheng Liu Keqi Hu Yongsheng Li Zhinian Li Yinfan |
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Institution: | (1) Department of Mechanics, Peking University, Beijing, China;(2) Computing Center Academia Sinica, Beijing, China |
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Abstract: | The transition from regular reflection (RR) to Mach reflection (MR) as a plane shock wave diffracts around a triangular mountain of 45° inclination is analysed in this paper, both by optical
measurement in a shock tube and by numerical simulation the numerical method developed by Li Yingfan1] is of the FLIC type with triangular mesh. The dependence of the critical transition point Lk ofRR→MR on shock Mach numberM
i
is analyzed and the variations of the incidence angle ω
i
of the impinging shock and the reflection angle ω
r
with the distanceL
* are investigated. Our experimental and numerical results agree well with the theoretical results of Iton and Italya. |
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Keywords: | Mach effect regular reflection (RR) Mach reflection (MR) (RR) to (MR) transition shock wave reflection shock tube |
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