Page 172 - 48Fundamentals of Compressible Fluid Mechanics

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CHAPTER 8. ISOTHERMAL FLOW

From the table

3'3

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The pressure at point (b) utilizing the isentropic relationship (
) pressure
3(

,and

ratio is 0.52828. 3!(

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than the actual

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pressure one must conclude that the flow is not choked. The solution is iterative

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0 % %
process.
As the pressure at point (b) is smaller the actual pressure
1. guess reasonably the value of
and calculate

3. Obtain
from the table ? or using the program.

4. Calculate the pressure, in mind that this isn’t the real pressure but based on

2. Calculate the value of by subtracting
the assumption)
5. Compare the results of guessed pressure with the actual pressure. and
chose new
accordingly.
Now the process has been done for you and provide in the Figure ?? or in table
resulted from the provided program.

The flow rate is #

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0

# #

3& 1
#
In this chapter, there are no examples on isothermal with supersonic flow.

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