Abstract Numerical investigation is performed for Mach reflection phenomena in Earth and Mars atmospheric conditions considering real gas effects. Initial computation at lower enthalpy yields Mach reflection in either flow medium. It is found that with increment in the freestream enthalpy the reflection pattern changes from Mach to regular reflection more prominently for the Mars atmosphere. This change is believed to be due to the noticeable real gas effects at higher enthalpies. The shock polar analyses indicate that the flow properties variation at higher enthalpies increases the maximum deflection angle of the flow, which in turn introduces transition in the reflection pattern.
Highlights Mach reflection phenomenon is assessed in Earth and Mars atmospheric conditions. Increased freestream stagnation enthalpy reduces the Mach stem height for real flows. Real gas effects are more prominent in Martian conditions than Earth atmospheric conditions. Higher enthalpies increase the maximum deflection angle of the flow to have attached shock.
Transition of shock reflection at higher enthalpies for Earth and Mars atmospheres
Acta Astronautica ; 188 ; 289-294
2021-07-30
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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