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Old   October 22, 2007, 04:58
Default supersonic jet
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shuo
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I am trying to simulate an supersonic jet and compare it with experimental results uses shadowgraphy. How can I produce a 'numerical schliren' for comparison? Is is the density derivative?

Shuo
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Old   October 23, 2007, 00:51
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Shuo
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For supersonic jets the literature gives the exit pressure ratio Pe/Patm and the exit Mach number. If I am doing numerical simulation i also need the density ratio rho_e/rho_atm. How can I estimate this?
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Old   October 23, 2007, 05:50
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Anton Lyaskin
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Try to search the forum - I'm sure I've seen the procedure to get "numerical schliren". Probably it was Star-CD forum, not the main one.
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Old   October 23, 2007, 18:06
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shuo
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I read that some papers that plotted the log(base 10?) of density gradients. I wonder what direction the density gradient is in x, y?
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