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Question about Fanno flow

  1. Feb 27, 2014 #1
    For Fanno flow, there is no change in h0 since no heat transfer and shaft work. I am wondering whether friction does work or not. Could anyone help me out? Thanks.
     
  2. jcsd
  3. Feb 28, 2014 #2
    Friction will result in slowing down the fluid at the wall, thus converting kinetic energy into internal. So the dynamic temperature v^2/2cp will drop, but the static temperature will rise. The total temperature and the total enthalpy remain the same.

    Hope this helps! :smile:
     
  4. Feb 28, 2014 #3
    In this way you see that h0 remains the same, no work is spent or added. The friction force does not do work.
     
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