1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Adding buoyancy to 3D integration of diffusion equation

  1. Jan 17, 2006 #1
    I have managed to create a simple CFD model to integrate in 3D the heat/diffusion equation, namely dT/dt = k d2T/dx2.

    This works fine, but I would now like to add the effect of 'less dense rising' assuming the gas is operating in air -- I think I'm right in saying that's called buoyancy (I'm not a physicist).

    SO my question is, can someone post a (hopefully) simple extension to this nice little equation that includes the buoyancy effect. I would assume it involves divT dot g, (where g is a vector of gravity), but thats as far as I can fathom.

    Any help much appreciated,
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Adding buoyancy to 3D integration of diffusion equation