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For compressible flow, the value of Cp at stagnation point is __________(a) 0(b) negative(c) infinity(d) greater than 1The question was posed to me in an online interview.Origin of the question is Pressure Coefficient in division Inviscid & Incompressible Flow of Aerodynamics

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Correct OPTION is (d) greater than 1

The explanation is: In the CASE of compressible flow, the value of VELOCITY at a STAGNATION point never equals to 0. The pressure and velocity DIFFER from one point to another. Hence, the Cp value is always greater than 1.



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