Lagrange multiplier in axial symmetry
Posted 11-Jan-2017 12:46 pm EST Heat Transfer & Phase Change, Geometry, Mesh Version 5.2 2 Replies
i am modelling a moving boundary interface (Stefan Problem), using the Lagrange multiplier T_lm from heat transfer analysis for prescribed normal mesh velocity in the deformed geometry physics.
The model is almost identical to the 2D Tin melting front example from Comsol library:
except that I work in axial symmetry and my interface is perpendicular to the axis of symmetry.
When I solve, the Lagrange multiplier T_lm is always zero at r=0. I guess I am missing something fundamental here ? Does anyone have a hint for me ?
Thank you and Regards
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