衝撃波管を用いた円錐上での正常反射からマッハ反射への遷移(J12-1 流体情報学1(実験と計算の融合研究),J12 流体情報学と融合研究)

概要

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Shock wave reflections over large apex angle cones have been investigated in a diaphragm-less shock tube with an intention of studying the phenomenon of transition from regular to Mach reflection over the cone surface. It is believed that over large angle cones with semi-apex angles ranging from 43 to 48 degrees, the reflection of an incident shock wave at a moderate Mach number of 2.38 may undergo a transition from regular to Mach over the cone surface due to viscous effects. The experiments are carried out with two test gases, nitrogen and argon. Flow visualization experiments are planned to study this phenomenon in detail over cones of different apex angles in the above range. Measurement of surface heat flux using platinum thin film sensors has also be carried out in order to analyze the heat transfer history over the cone surface during these reflection phenomena. The experimental results have been compared with the numerical results obtained from a commercial N-S solver Fluent (Version 6.1, Fluent Inc.). The experimental results obtained in this study are expected to be useful in validating CFD codes.
社団法人日本機械学会の論文
2004-09-04