Question

A wind tunnel nozzle is designed to yield a parallel uniform flow of air with a mach number m 30. the stagnation pressure ofthe air supply reservoir p 70. 105n/m2, and the nozzle exhausts into the atmosphere. calculate the flow angle at the exit lip of the nozzle if the atmospheric pressure p 1.0 atm. assume y 1.4 6. for the wind tunnel described in problem 5, determine the stagnation pressure of the air supply for which the flow angle at the exit lip is zero. describe what happens when the air supply pressure drops below that value.

Answer 1

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Answer 2

Answer:

In fluid dynamics, stagnation pressure (or pitot pressure) is the static pressure at a stagnation point in a fluid flow. At a stagnation point the fluid velocity is zero. In an incompressible flow, stagnation pressure is equal to the sum of the free-stream static pressure and the free-stream dynamic pressure.