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Sonic Flow in a Straight Pipe

  1. Jul 8, 2009 #1
    Can sonic velocity be achieved in a short pipe with constant cross-section, assuming isentropic flow with no viscous effects being taken into account?

    Thank you.
     
  2. jcsd
  3. Jul 8, 2009 #2

    FredGarvin

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    I can't think of any reason why not as long as the delta P is large enough.
     
  4. Jul 8, 2009 #3
    Large enough? How large would the pressure gradient need to be? Thanks
     
  5. Jul 9, 2009 #4

    FredGarvin

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    For a quick calculation, use bernoulli knowing the flow diameter of the tube. Solve for P1-P2
     
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