sph -- non constant diffusion -- CFD Online Discussion Forums

September 5, 2011, 10:22	sph -- non constant diffusion	#1
diedro New Member diego avesani Join Date: Dec 2010 Location: Trento Posts: 12 Rep Power: 16	hi everyone, I would like to write a SPH code for grondwater flow. I have a Big problem I have to deal with a non constant diffusion tensor. In case of constant diffusion the equation seems simple: $\frac{d C_i}{dt} = \sum \frac{m_j}{\rho_i \rho_j}(D_i + D_j)(\rho_i - rho_j) .....$ How can I do when I have a non constant diffusion tensor D(x,y,z)? thank you very much

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