Page 131 - 48Fundamentals of Compressible Fluid Mechanics
P. 131

5.3. THE MOVING SHOCKS                                 
 
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                The about table for obtained utilizing Potto-GDC with the iteration request.
                                          
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         Example 5.4:
                                          
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         What should be the prime Mach number (or the combination velocity with the tem-
         perature, those who like extra step) in order to double temperature when the valve
         is suddenly and totally close?
          SOLUTION
         The ratio can be obtained from from Table (5.3). It also can be obtained from the
         stationary normal shock wave table. Potto-GDC provides for this temperature ratio
         the following table







                  
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(  using this number in the moving shock

         table provides
         which means that the required
                                      

 

 
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         Example 5.5:     
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         Open question to be addressed in the next version.
         A gas is flowing in a pipe with Mach number of 0.4. Calculate the speed of the
         shock when a valve is close in such a way that the Mach number is reduced to half.
         Hint, this is semi close valve case in which the ratio of prime Mach number is half
         (the new parameter that add in the general case).
          SOLUTION
         Example 5.6:
         Open question to be addressed in the next version.
         A piston is pushing air flowing in tube with Mach number of 
  
 0 . The piston
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