Isentropic Flow
In isentropic flow the ratio of total pressure to static pressure is given by:
where:
is total pressure
is static pressure
is the ratio of specific heats
is the freestream Mach number
Taking to be 1.4, and since
Expressing the incompressible dynamic pressure as and expanding by the binomial series gives:
where:
is dynamic pressure
Read more about this topic: Impact Pressure
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