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The total pressure and total density are present there only for an isentropic flow.

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The total pressure and total density are present there only for an isentropic flow.

(a) True

(b) False

This question was addressed to me in an internship interview.

My question comes from Definition of Total Stagnation Conditions in chapter Compressible Flow – Preliminary Aspects of Aerodynamics

1 Answer

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Best answer
The correct option is (b) False

Best explanation: At any point along the flow where static density and pressure are defined, we can assign the values of stagnation density and pressure. The definition of these involves the isentropic compression to zero velocity but the flow need not be isentropic. These concepts are valid for all general flows, including non isentropic flow at any point.

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