Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
How to Ignore a Term in a Weak Expression (Laminar Two-Phase Flow with Moving Mesh)
Posted 04.12.2024, 03:49 GMT-5 Modeling Tools & Definitions, Physics Interfaces Version 6.2 0 Replies
Please login with a confirmed email address before reporting spam
Hello everyone,
I am working with the Laminar Two-Phase Flow and Moving Mesh in COMSOL.
Currently, the weak expression of the free Surface is defined as follows in COMSOL: -spf.pext*(spf.iNx*test(u)+spf.iNy*test(v))-spf.sigma*(test(uTx)+test(vTy))
This corresponds to the following equation: n_i τ_i\=−p_ext n_i +σ(∇_s⋅n_i)n_i−∇_s σ (https://doc.comsol.com/6.2/docserver/#!/com.comsol.help.cfd/cfd_ug_fluidflow_multi.09.141.html)
Now, I would like to ignore the term −∇_s σ (Marangoni effect) in the weak expression.
However, I am not sure how to modify the weak expression correctly to achieve this.
Does anyone have a suggestion on how to do this?
Thank you in advance!
Hello C S
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.