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Help with compressible flow problems

  1. Jul 23, 2014 #1
    1. The problem statement, all variables and given/known data

    Calculate the pressure increment required to isentropically compress air and water at 1 atm and 20°C to 50% of their volume. The isentropic bulk modulus for water at 20°C is 2.24 109 N/m2, and air can be considered an ideal gas with γ =1.4 .

    2. Relevant equations

    [itex]\frac{P2}{P1}[/itex]=[itex]\frac{V1}{V2}[/itex]γ=[itex]\frac{T2}{T1}[/itex][itex]\frac{γ}{γ-1}[/itex]

    3. The attempt at a solution
    [itex]\frac{P2}{1013.25Pa}[/itex]=(0.5)1.4=383.9 Pa

    I am reading ahead on the lecture notes which literally just show me how to derive the equation i provided so I have no clue at all what i'm doing would appreciate any pointers/ resources to get more practice on these types of questions :)
     
  2. jcsd
  3. Jul 27, 2014 #2
    I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
     
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