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What do you mean by sub sonic, sonic and supersonic flows?

(5 Marks) Dec-2018

Subject Fluid Mechanics 2

Topic Compressible Flow

Difficulty Medium

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Sub sonic flow: A flow is said sub sonic flow if Mach number is less than 1 i.e velocity of flow (V) is less than the velocity of the sound wave (C).

Sonic flow: A flow is said sonic flow if Mach number is equal to 1 i.e velocity of flow is equal to the velocity of the sound wave.

Super sonic flow: A flow is said super sonic flow if Mach number is greater than 1 i.e velocity of flow is greater than the velocity of the sound wave.

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