Subsonic flow (M < 1 everywhere). A flow field is defined as subsonic if the Mach number is less than 1 at every point. Subsonic flows are characterized by smooth streamlines (no discontinuity in slope), as sketched inFig. 4a.

What is meant by subsonic flow?

: directed motion of a fluid medium in which the velocity is less than that of sound in the medium throughout the region under consideration.

What is supersonic and subsonic flow?

Subsonic Flow: When Mach number is less than 1.0 or V is less than C, then the flow is called Subsonic Flow. ... Supersonic Flow: When Mach number is greater than 1.0 or V is greater than C, then the flow is called Supersonic Flow.