Hysteresis phenomena associated with shock waves interference in steady hypersonic flow Online publication date: Fri, 31-Oct-2014
by Bruno Chanetz; Richard Benay
International Journal of Aerodynamics (IJAD), Vol. 2, No. 2/3/4, 2012
Abstract: If an oblique shock wave encounters a wall, two reflection types are possible. According to the inclination of the shock, with respect to the incoming flow, the resulting configuration is either a regular reflection (RR) or a Mach reflection (MR). At Mach number higher than 2.2, both reflections are theoretically possible for some incidence angles. This range is known as the dual-solution domain, and its existence led to hypothesise an hysteresis in the RR-MR transition. In order to study this phenomenon, experimental investigations and numerical simulations have been performed. The first part of this article deals with the experimental and numerical tools which were used. The second part presents the results. According to the experimental configurations, the hysteresis may be obtained in two ways. The flow Mach number being kept constant (Mach 10) in the wind tunnel used (ONERA R3Ch WT), this phenomenon is obtained by variation of the aspect ratio or by variation of the incidence angle.
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