Estimate convection and diffusion terms in transport equation -- CFD Online Discussion Forums

April 4, 2011, 12:16	Estimate convection and diffusion terms in transport equation	#1
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	I have an additional variable that is transported through the domain (using the normal transport equation, third eqn. at http://www.cfd-online.com/Wiki/Gener...sport_equation). Im am trying to estimate where and when the transport is dominated by diffusion and when it is dominated by convection. So I thought that I could compute each of the terms in the transport equation to see which term is larger than the other. To do so I need to estimate div(rhouscalar) and div(Gamma*grad(scalar)) in cfd-post. Is there a way to that or should I take another approach?

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