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Old   April 16, 2021, 10:00
Default Normal shock relations
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I am currently trying to solve the normal shock relations for two species. I have basically a shock tunnel, where a moving shock propagetes from a high pressurized helium chamber into a air chamber with ambient pressure and temperature.

Therefore before the moving shock there is air with y=1,4 and R = 287 and behind the shock there is helium with y=1.67 and R = 2077.

My questions are:

1. Is there any literature where this problem has already been solved? Unfortunately I couldn't find any.

2. Is the assumption correct, that behind the shock there is pure helium or is there some sort of mixing? I would say it is pure helium, since the pressure behind the shock is higher than ambient pressure, so backflow is not possible. Just want to make sure I am not missing an important aspect.

Thanks in advance!
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Old   June 22, 2023, 05:36
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Are you after the simple solution if the shock relations? Aren't these found in every look on gas dynamics?
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