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-   -   sph -- non constant diffusion (http://www.cfd-online.com/Forums/main/92181-sph-non-constant-diffusion.html)

diedro September 5, 2011 09:22

sph -- non constant diffusion
 
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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