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What causes the flow properties to vary in quasi – one – dimensional flow?

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What causes the flow properties to vary in quasi – one – dimensional flow?

(a) Cross – sectional area

(b) Normal shock

(c) Head addition

(d) Frictional drag

The question was posed to me in an international level competition.

My query is from Governing Equations in section Quasi-One-Dimensional Flow of Aerodynamics

1 Answer

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Correct choice is (a) Cross – sectional area

Explanation: In case of quasi – one dimensional flow the flow properties keep changing along the distance x due to the varying cross – sectional area (A) which is in contrast to the one – dimensional flow. In that, the area remains constant thus, the flow properties change fir to the presence of shock wave friction and heat addition or removal.

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