Discretization of advection-diffusion equation -- CFD Online Discussion Forums

November 26, 2012, 03:29

Discretization of advection-diffusion equation

Thomashoffmann

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Thomas Hoffmann

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Hi All.
My supervisor told me to write the advection-diffusion equation in discrete form. I have found it carried out in Suhas Patankars Book 'Numerical heat transfer and fluid flow', and I have attached the pages here.
But I can't figure out how he integrated over the control volume and found equation (5.50). Can one of you guys show me how the terms Je, Jw, Jn and Js looks?

Thanks

Thomas

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