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Posted:
1 decade ago
2015年1月27日 GMT+8 16:56
You have thin layer with some initial dopant concentration. Assign the "No flux" condition on the boundary which is facing the "outside world", and at boundary between the layer and bulk no condition is necessary as COMSOL assumes continuity across inner boundaries. Of course, if you have some specific condition on that boundary, use it. I could attach a model but I am using version 5.0. Yet, attached the report file which may help you.
br
Lasse
You have thin layer with some initial dopant concentration. Assign the "No flux" condition on the boundary which is facing the "outside world", and at boundary between the layer and bulk no condition is necessary as COMSOL assumes continuity across inner boundaries. Of course, if you have some specific condition on that boundary, use it. I could attach a model but I am using version 5.0. Yet, attached the report file which may help you.
br
Lasse
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Posted:
1 decade ago
2015年1月27日 GMT+8 16:58
And the attachments
And the attachments
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Posted:
1 decade ago
2015年1月28日 GMT+8 01:09
Well, but in such model the dopant layer won't decrease. It will be only a part of diffusion area. However, in the reality dopants diffuse in, and specially created conditions prevent outdiffusion.
If a have misunderstood your idea, please send me your model, it doesn't matter which version it has.
Well, but in such model the dopant layer won't decrease. It will be only a part of diffusion area. However, in the reality dopants diffuse in, and specially created conditions prevent outdiffusion.
If a have misunderstood your idea, please send me your model, it doesn't matter which version it has.
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Posted:
1 decade ago
2015年1月28日 GMT+8 15:29
If you mean that the thickness of the dopant layer does not decrease you are right. In my model only the concentration of the dopant in the layer decreases. If you want the thickness to decrease, I do not know how to do it.
If you mean that the thickness of the dopant layer does not decrease you are right. In my model only the concentration of the dopant in the layer decreases. If you want the thickness to decrease, I do not know how to do it.
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Posted:
9 years ago
2016年12月21日 GMT+8 00:07
Could you please send me the diffusion model I need to study the diffusion between a gas and a liquid either in 3d or in 2d
Could you please send me the diffusion model I need to study the diffusion between a gas and a liquid either in 3d or in 2d
