Dear friends,
In the attached MPH file, I am simulating a gas bubble moving in fluid using COMSOL moving mesh application. The COMSOL weak form pdes application mode was applied but unfortunately I am not able to do it. Please can someone find out my mistakes in the code. I shall be really very thankful.
I would remove the weak terms, and simply start with the moving mesh; apply different deformations and see if your mesh can accomodate the desired movement. Then apply one of the PDE, and continue from there.
Thank you brother. The problem is, I cannot move the bubble wall with moving mesh capability, as comsol considers it as the geometry. As we need to freely deform the bubble. Its very difficult for me. I cannot understand this thing how to freely deform it. Please you try it. I shall be really very thankful.
You should step way back, and e.g. see if you need to remesh or not (maybe you do for your particular problem). I show in the attached that you can certainly displace your drop statically, deforming the mesh without remeshing. Then you can take it from there. Also see
https://www.comsol.com/blogs/model-translational-motion-with-the-deformed-mesh-interfaces/
https://www.comsol.com/blogs/deformed-mesh-interfaces-rotations-and-linear-translations/
https://www.comsol.com/blogs/modeling-free-surfaces-in-comsol-multiphysics-with-moving-mesh/
https://www.comsol.com/model/modeling-deforming-meshes-30561
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