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Radial diffusion

Posted 28 mar 2013, 06:51 GMT-4 1 Reply

Rehab Al Botros
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HI,

I am trying to build a 1D model which is a line, but I want the diffusion to be radial instead of linear, I know that the equation is : dC/dt = D[ d2C/dr2 + (2/r) * (dC/dr )], but I do not know how to implement this in the model to get spherical diffusion.

Any help is really appreciated.
Thanks
Rehab
1 Reply Last Post 28 mar 2013, 09:06 GMT-4
Niklas Rom COMSOL Employee

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Posted: 1 decade ago 28 mar 2013, 09:06 GMT-4
Check this out:
www.comsol.com/showroom/gallery/8481/

Niklas


HI,

I am trying to build a 1D model which is a line, but I want the diffusion to be radial instead of linear, I know that the equation is : dC/dt = D[ d2C/dr2 + (2/r) * (dC/dr )], but I do not know how to implement this in the model to get spherical diffusion.

Any help is really appreciated.
Thanks
Rehab



Check this out: http://www.comsol.com/showroom/gallery/8481/ Niklas [QUOTE] HI, I am trying to build a 1D model which is a line, but I want the diffusion to be radial instead of linear, I know that the equation is : dC/dt = D[ d2C/dr2 + (2/r) * (dC/dr )], but I do not know how to implement this in the model to get spherical diffusion. Any help is really appreciated. Thanks Rehab [/QUOTE]

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