Shockwave in airfoil analysis
Hi, currently I am doing a shockwave analysis on an airfoil with a a condition freestream Mach < 1, so that shockwave would occur somewhere downstream flow on an airfoil.
I am absolutely sure there was shockwave in my case. But I wasn't able to identify the shockwave in velocity contour map and I do not know what is the characteristic of shockwave that would help me to identify it. Could someone please show me a map of velocity contour map that has shockwave that would help me to identify the shockwave ? Thank you in advance Alex |
Re: Shockwave in airfoil analysis
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Re: Shockwave in airfoil analysis
Dear Alex,
As there will be a pressure drop across the shock, try by viewing Cp contours, also disable auto options and give some less higher limit by enabling global options.I think this will do. Regards, Vishal |
Re: Shockwave in airfoil analysis
Thank you, cfd_newbie and Vushal. This makes more clear to me.
This leads to another question. Since the pressure drops across the shock, which I can clearly see it from the map, would it be the same as in flow separation caes?, ie the pressure would suddenly drop. If possible, could you please provide a map of velocity and Cp that has flow separation? Thank you Alex |
Re: Shockwave in airfoil analysis
If you want a good introduction to the shock wave theory I recommend you to read:
Modern compressible flow, by J. D. Anderson. or Fundamentals of Aerodynamics , by J. D. Anderson. If you only want to visualize the flow pattern in a compressible flow around an airfoil you could consult the Van Dyke Album of Fluid Motion. |
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