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How is total enthalpy related in a stationary shock wave?

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How is total enthalpy related in a stationary shock wave?

(a) Constant

(b) h2 > h1

(c) h2 < h1

(d) h02 < h01

I have been asked this question in final exam.

Question is taken from Moving Normal Shock Waves topic in section Unsteady Wave Motion of Aerodynamics

1 Answer

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Best answer
Right choice is (a) Constant

Explanation: For a stationary shock wave, the total enthalpy remains constant across the shock wave which means that h02 = h01. Although, in case of moving shock wave, this is not the case. The enthalpy does not remain constant across the shock.

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