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Help !!! boundary layer meshing for natural convection

Posted 18 sept. 2017, 20:18 UTC−4 Fluid & Heat, Computational Fluid Dynamics (CFD), Heat Transfer 1 Reply

Ramsay Huang
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Hi

I am trying to model four stacking fruit in a polystrene box. I know there are radiation and natural convection happen and I have done the experiemnt. I just want to creat a model to explain it. however, I cannot make the natural covnection work in my model. I don't know why I couldn't mesh the boudnary layer, and there for comsol result could not converge. could you please help me.

Great thanks

Ramsay

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1 Reply Last Post 21 sept. 2017, 17:58 UTC−4
Sohan Birla
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Posted: 7 years ago 21 sept. 2017, 17:58 UTC−4

Ramsay, You need to provide point pressure constraint for flow field to converge. Secondly, activate gravity factor for taking care of flow occurs due to bouyancy.

Ramsay, You need to provide point pressure constraint for flow field to converge. Secondly, activate gravity factor for taking care of flow occurs due to bouyancy.

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