Hi All,

I'm trying to solve the diffusion equation with a point source at an arbitrary location inside a circle. My idea is to adapt the example examples.diffusion.circle <http://www.ctcms.nist.gov/fipy/examples/diffusion/generated/examples.diffusion.circle.html#module-examples.diffusion.circle> but I'm not sure how to proceed. I think the idea should be create a variable which is zero everywhere except for where the point source is located, and add this variable as the source. But I don't know how to do this.

Any ideas or help will be greatly appreciated.

Best,
Adrian.

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