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Old   August 20, 2005, 06:16
Default Density Ratio
  #1
Compressibility
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hello,

in a high speed compressible flow where there may be shocks forming, what size density ratios might i get?

would these density ratios be bigger than i would get in a low speed combustion system?

thanks
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Old   August 20, 2005, 17:29
Default Re: Density Ratio
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Jim_Park
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Get an aerodynamcis or fluids book from your library, go to the supersonic chapters, and find some of the simple flows that can be solved analytically - with your electronic calculator (or slide rule).

Put some numbers in and calculate the density ratio (also pressure and temperature ratios) across a shock. And you can calculate the shock location. Now you have your answer - and the first test case for your code!
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Old   August 21, 2005, 17:24
Default Re: Density Ratio
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Compressibility
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your answer is not overly helpful for a beginner in the subject ...
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Old   August 21, 2005, 18:27
Default Re: Density Ratio
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Ahmed
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I disagree with you, Jim Park gave you the most correct answer, do your home work and learn the basics
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