convection diffusion udf

vishnufmnc2006 · July 13, 2016, 23:28

Hi Experts
Can any one help to write a udf for convection difusion equation that contains a source term and a sink term. The project is to simulate the concentration of a radioactive gas in a model room. The wall and floor are the source of the gas (radon)
d/dt(C) + div(uC) = div(D*gradC) +S- kC is the governing equation

where D=diffusion coefficient of radon in air, K= decay constant )

vishnufmnc2006 · July 14, 2016, 10:04

Hi experts
Please suggest how do I approach this problem. Is the above mentioned governing equation built in its library? Where do I make changes using UDF?

Thank You

July 13, 2016, 23:28	convection diffusion udf	#1
vishnufmnc2006 New Member vishnu prasad Join Date: Jul 2015 Posts: 3 Rep Power: 10	Hi Experts Can any one help to write a udf for convection difusion equation that contains a source term and a sink term. The project is to simulate the concentration of a radioactive gas in a model room. The wall and floor are the source of the gas (radon) d/dt(C) + div(uC) = div(D*gradC) +S- kC is the governing equation where D=diffusion coefficient of radon in air, K= decay constant )

July 14, 2016, 10:04	Radon_convection_diffusion	#2
vishnufmnc2006 New Member vishnu prasad Join Date: Jul 2015 Posts: 3 Rep Power: 10	Hi experts Please suggest how do I approach this problem. Is the above mentioned governing equation built in its library? Where do I make changes using UDF? Thank You

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