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The difference between the Heat and Diffusion equation ?

  1. Mar 10, 2009 #1
    the difference between the Heat and Diffusion equation ?!!

    Please:

    What is the difference between the Heat and Diffusion equation ?!!

    thank you.
     
  2. jcsd
  3. Mar 10, 2009 #2

    HallsofIvy

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    Re: the difference between the Heat and Diffusion equation ?!!

    There is no difference. They are just different names, referring to different applications, for the same type of equation: more formally, a parabolic PDE.
     
  4. Mar 11, 2009 #3
    Re: the difference between the Heat and Diffusion equation ?!!


    thank you very much

    but I mean the difference case of the coefficient k of the second derivative of u with respect to x

    If k > 0 .................

    If k < 0 .................
     
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