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withsol in PDE throws error

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In the urgent need of solving the following weak form PDE for \lambda^k
\sum_{k=1}^K \int (w \nabla . \nu^k) \lambda^k = b

where w is the test function and \nu^k are the K vectors resulting from a previous study using a parameter sweep for k.

According to the COMSOL Reference Manual I would use withsol to evaluate this expression, but withsol is not accepted in the weak form PDE, as it throws the following error:

Unknown function or operator: withsol

How can I solve my problem? Maybe via Matlab livelink?

Thank you.


1 Reply Last Post 25 juil. 2015, 15:14 UTC−4

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Posted: 9 years ago 25 juil. 2015, 15:14 UTC−4
Is withsol supposed to not function in PDE expressions?
Is withsol supposed to not function in PDE expressions?

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