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Switching from Dirichlet Boundary Condition to Neumann Boundary condition
Posted 2023年3月25日 GMT+1 00:43Porous Media Flow, Equation-Based ModelingVersion 5.41 Reply
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Hello everyone,
I am currently using the Coefficient form PDE module in COMSOL Multiphysics to solve for the saturation distribution in soil. I am facing an issue where I need to apply a saturation of 1 for the first 5 seconds and then switch to a zero flux boundary condition at that boundary.
Boundary conditions are as follows: **S = 1 for t<5 dS/dY = 0 for t>5 **
I would greatly appreciate any insights or advice on this issue. Thank you in advance for your help.
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This blog post may be helpful:
https://www.comsol.com/blogs/how-to-make-boundary-conditions-conditional-in-your-simulation
-------------------Henrik Sönnerlind
COMSOL