For low velocities, the total pressure is only slightly larger than the static pressure
Chapter 12, Problem 12.26(choose chapter or problem)
For low velocities, the total pressure is only slightly larger than the static pressure. Thus one can write p,lp = 1 + E, where E is a small positive number ( E ~ 1). Using this approximation, show that as E -jo 0 (M -jo 0), Eq. (12.31) on p.455 in 12.2 reduces to M = [2(p,/~ _ l)r2
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