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dimensionless NS equations

Posted Jan 20, 2011, 11:02 a.m. EST Interfacing, Chemical Reaction Engineering Version 4.0a 0 Replies

Lu Han
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Hi,

I am trying to model phase separation occuring in a biodiesel reactor. I am couping NS equations with Cahn-Hilliard equations in PDE format. I ran into some convergence problems with dimensional variables so I thought to move to using dimensionless equations instead. Using some literature cited scaling, the non-dimension NS equations were as follows: Re*?*d/dt (v)=-?p+??^2 v+(?_1 c_B)/(CaC_h )*?*(?_1 ?c_1+?_2 ?c_2 )

How do I input the Reynolds number in the Comsol format of the NS equations? Do I have to change the format? Please help.

Thank you

Sincerely,
Lu
0 Replies Last Post Jan 20, 2011, 11:02 a.m. EST
COMSOL Moderator

Hello Lu Han

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