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A flow is isentropically expanded to supersonic speeds in a convergent-divergent nozzle. The reservoir and exit pressures are 1.0 atm and 0.3143 atm, respectively. What is the value of Ae/A*?

Respuesta :

Olajidey

Answer:

Ae/A* = 1.115

Explanation:

Let the reservoir pressure be  [tex]p_0[/tex]

Let the exit  pressure be [tex]p_e[/tex]

Ratio of reservoir pressure and exit pressure

[tex]\frac{p_o}{p_e} = \frac{1}{0.3143}[/tex]

  = 3.182

For the above value of pressure ratio

Obtain the area ratio from the isentropic flow table

Ae/A* = 1.115

The value of pressure ratio is Ae/A* = 1.115

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