SI unit of Mach Number?????......
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fluid dynamics, the Mach number (M or Ma) is a dimensionless quantity ... As the Mach number is a dimensionless quantity rather than a unit of measure, with Mach, the number
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In fluid dynamics, the Mach number (M or Ma) (is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound
M is the Mach number,
u is the local flow velocity with respect to the boundaries (either internal, such as an object immersed in the flow, or external, like a channel), and
c is the speed of sound in the medium.
By definition, at Mach 1, the local flow velocity u is equal to the speed of sound. At Mach 0.65, u is 65% of the speed of sound (subsonic), and, at Mach 1.35, u is 35% faster than the speed of sound (supersonic).
In fluid dynamics, the Mach number (M or Ma) (is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound
M is the Mach number,
u is the local flow velocity with respect to the boundaries (either internal, such as an object immersed in the flow, or external, like a channel), and
c is the speed of sound in the medium.
By definition, at Mach 1, the local flow velocity u is equal to the speed of sound. At Mach 0.65, u is 65% of the speed of sound (subsonic), and, at Mach 1.35, u is 35% faster than the speed of sound (supersonic).
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