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Diffusion already progressed at time zero?

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Hello,

We are trying to model simple diffusion through mulitiple layers. We set up our simulation with an intitial concentration only at a single surface. However, at time 0, there is some material that already appears to have diffused, with non-zero concentrations at areas beyond the resevoir. Does anyone have any advice as to how to resolve this? Thank you!

Jess


1 Reply Last Post 2018年2月28日 GMT-5 14:21
Jeff Hiller COMSOL Employee

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Posted: 6 years ago 2018年2月28日 GMT-5 14:21
Updated: 6 years ago 2018年2月28日 GMT-5 17:40

See my post in this thread:

https://www.comsol.com/forum/thread/32944/calculated-initial-values-not-the-same-as-specified?last=2016-07-11T16:06:43Z

Best,

Jeff

-------------------
Jeff Hiller
See my post in this thread: https://www.comsol.com/forum/thread/32944/calculated-initial-values-not-the-same-as-specified?last=2016-07-11T16:06:43Z Best, Jeff

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