# calculate cp

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 February 25, 2005, 10:53 calculate cp #1 Pete Guest   Posts: n/a Hi all, I would like to calculate cp along a flat plat. I have tried to do this by load pressure,static pressure and total pressure for the boundary and calculated cp=(pressure-pstatic)/(ptot-pstat) This seems not to be a good idea. It looks to me that pstat and ptot are equal. Can anybody advice me, how to calculate cp? Thanks.

 March 2, 2005, 21:58 Re: calculate cp #2 Kevin Guest   Posts: n/a Hello I believe at the wall pstatic is ptot because the velocity is zero. ptot = pstatic + 1/2*rho*V**2 I believe you need to do Cp = (p-p_infinity) / 1/2*rho_infinity*V_infinity**2 The p in the above equation is from the getc p command and the infinity values are a constant based on the free stream.

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