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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 28.02.2018, 14:21 GMT-5
Jeff Hiller COMSOL Employee

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Posted: 7 years ago 28.02.2018, 14:21 GMT-5
Updated: 7 years ago 28.02.2018, 17:40 GMT-5

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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