Fluid Dynamics

, Volume 11, Issue 3, pp 421–424 | Cite as

Mathematical simulation of Mach reflection of shock waves in media with different adiabatic indices

  • V. N. Lyakhov


Some peculiarities of the processes of regular and Mach reflection at constant adiabatic index γ=cp/cv=1.4 were investigated theoretically in [1]. It was demonstrated that increase in incident-wave intensity above some value leads to the appearance of an internal compression discontinuity (Fig. 1) and a break in the reflected wave (at point h), both of which had been observed previously only in experiment [2–4]. In the present study the method described in [1] is used to study the influence of adiabatic index on these peculiarities of the Mach reflection process which lead to a significant increase in pressure (to a maximum value Pm) on the surface wedge in the vicinity of point i. Pressure and density curves along the wedge surface are presented. It is found that increase in γ leads to the same qualitative changes in the pressure and density curves on the surface as are observed upon increase in semiaperture angle of the wedge Β or upon decrease in Mach number Mf of the shock-wave front incident on the wedge ab. These similarities in the shock-wave reflection process were first noted in [5] for weak shock waves in which the internal compression discontinuity does not appear.


Reflection Shock Wave Mach Number Qualitative Change Mathematical Simulation 
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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • V. N. Lyakhov
    • 1
  1. 1.Moscow

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