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Not specifying boundary conditions for certain dependant variables.
Posted 16 feb 2020, 20:48 GMT-5 General, Introduction, Equation-Based Modeling 0 Replies
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Hi, I'm currently working on a system of PDEs using the Coefficient Form PDE module in 2D for my reactor design coursework. My system requires the coupling of multiple dependant variables with different units, which I did by specifying multiple coeffcient form PDEs under the component. Based on my formulation, I do not wish to impose any boundary conditions on some of the dependant variables (I'm rather new to FEM and I'm not sure if this is allowed), However, I realised that COMSOL imposes a default boundary condition on boundaries for all dependant variables under each coefficient form PDE node.
Based on this problem, I would like to ask if there is a way to not impose a boundary condition for certain dependant variables, if it is allowed. I an currently thinking along the lines on setting the constraint to zero buy I'm not sure of its the right thing to do. Any help would be much appreciated, thank you.
Hello CJK
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