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Help: Why is Initial value changed after calculation?
Posted 20 ago 2013, 21:04 GMT-4 Materials Version 4.3a 1 Reply
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Hello, everyone. I build two models （both are PDEs）in one file.
For the first one, initial value is A0, a log-normal distribution.
For the second one, initial value is B0, also a log-normal distribution. It uses the result of first model as an input parameter.
Then I solve two PDEs together. When I get the solution of the second model, I plot solution at time 0. Theoretically it should be the same as B0. But I get a totally different value. Why does this happen?
I've tried to use finer mesh grid and smaller tolerance value, but it doesn't work.
Thanks for your help.
For the first one, initial value is A0, a log-normal distribution.
For the second one, initial value is B0, also a log-normal distribution. It uses the result of first model as an input parameter.
Then I solve two PDEs together. When I get the solution of the second model, I plot solution at time 0. Theoretically it should be the same as B0. But I get a totally different value. Why does this happen?
I've tried to use finer mesh grid and smaller tolerance value, but it doesn't work.
Thanks for your help.
1 Reply Last Post 21 ago 2013, 18:16 GMT-4
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Posted:
1 decade ago
Is there anyone who knows something about it?