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Compressibility and divergence-free flow

  1. Nov 27, 2007 #1
    Hi there, I'd like to know if, under the conditions of thermal flows (viscous, conductive) and low Mach numbers (< 0.3), it is formally/conceptually correct to affirm that "non-divergence is only necessary condition for incompressibility"

    Thank you very much in advance

    S.
     
  2. jcsd
  3. Dec 18, 2007 #2
    As far as I am aware Div(V)=0 is the only condition for incompressible flows. If Div(V) is not zero, flow is not incompressible and vice versa. So necessary and sufficient.
     
  4. Dec 18, 2007 #3
    Hi there Sayak, thank you very much for replying!
    All the best

    Simone
     
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