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The highest value of Cp is given at ________

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The highest value of Cp is given at ________

(a) end points

(b) stagnation point

(c) everywhere in the flow field

(d) at boundaries

I have been asked this question in an interview.

My query is from Pressure Coefficient in section Inviscid & Incompressible Flow of Aerodynamics

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Correct choice is (b) stagnation point

Explanation: At stagnation point, the value of velocity is 1 and therefore Cp = 1 – (V2/ V1)^2

Gives the value of the coefficient of pressure as 1. This is true only for incompressible flow. Stagnation point gives the highest value of the coefficient of pressure.

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