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PCM 3D model not working
Posted 2015年5月24日 GMT-4 11:07 Fluid & Heat, Heat Transfer & Phase Change, Studies & Solvers Version 4.4, Version 5.0 0 Replies
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I have created a simple model for phase change of a PCM material in COMSOL 4.4 and 5.0 by using the physics heat transfer in fluids and laminar flow.
Conditions applied are
for heat transfer in fluids:
-thermal flow (with specified value)
-symmetry
-initial value T0 (less than phase change start temperature)
for laminar flow:
-no slip condiitons on external surfaces
-null pressure conditions in one point
-symmetry
-volume forces
With such settings, a 2D symmetric and not symmetric (with no simmetry conditions of course) model works, but when I switch to a spherical 3D geometry (either the entire sphere or a quarter) it's like the Navier Stokes equations are not completely defined because I obtain the temperature profile typical of just conduction.
Anyone has some ideas on what is wrong?
Thanks in advance!
Valeria
Hello Valeria Palomba
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