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Using Level Set Method to Model Evaporation in COMSOL

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Old   September 11, 2022, 17:05
Default Using Level Set Method to Model Evaporation in COMSOL
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Hi All,


I am new to this forum and did not find a COMSOL forum in the software specific listings, so I hope putting this in Main is acceptable.


I am trying to do a very simple model of evaporation using the level set method, and as you can see from the attachment the solution never converges and gets stuck in a very small time step. I ran it over night and had to cancel the computation.


I have tried many different settings for the Level Set parameters:

- Reinitialization Parameter, gamma
- Parameter controlling interface thickness, epsilon


I am following the rule of thumb given at the COMSOL knowledge bank, located here (Two-Phase Flow Modeling Guidelines - Knowledge Base (comsol.com)), but really I have no idea what these parameters mean physically and if that is the problem or some other aspect of my model.


Has anyone had experience with level set method?
Attached Images
File Type: png Screenshot 2022-09-11 134310.png (16.5 KB, 12 views)
File Type: jpg Screenshot 2022-09-11 135031.jpg (69.6 KB, 9 views)
File Type: jpg Screenshot 2022-09-11 134518.jpg (87.3 KB, 9 views)
File Type: png Screenshot 2022-09-11 134404.png (85.2 KB, 8 views)
File Type: jpg Screenshot 2022-09-11 135921.jpg (73.9 KB, 7 views)
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