What happens to the velocity of the supersonic flow in the divergent duct?(a) Decreases(b) Increases(c) Remains the same(d) Changes periodicallyThe question was posed to me in examination.My question comes from Governing Equations for Quasi One Dimensional Flow in division Compressible Flow through Nozzles, Diffusers and Wind Tunnels of Aerodynamics

What happens to the velocity of the supersonic flow in the divergent d

1.	What happens to the velocity of the supersonic flow in the divergent duct?(a) Decreases(b) Increases(c) Remains the same(d) Changes periodicallyThe question was posed to me in examination.My question comes from Governing Equations for Quasi One Dimensional Flow in division Compressible Flow through Nozzles, Diffusers and Wind Tunnels of Aerodynamics
Answer» CORRECT OPTION is (b) Increases Best explanation: Supersonic flows have M > 1 which results in M^2 – 1 value in the area – velocity relation to be positive. Thus for DIVERGENT SECTIONS where cross – SECTIONAL area increases with x, the value of velocity increases.

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