Is it possible to use divergence in the source term of an scalar transport equation?
I have the following problem. I'm trying to implement "Thermophoretic Force/Velocity" in Ansys CFX12. The thermophoretic velocity/force depends on the temperature gradient, which is easy to get in CFX Pre. I want to include the thermophoretic force because of the effect of depostion on particles in aerosol flows.
But the main problem I have is defining the source term of the scalar transport equation of the particles.
The source term should look like this:
The complete Transport Equation should look like this:
where N is the transported scalar, rho is the density an u_th is the termophoretic velocity vector.
Is there any possibilty to define this source term with CEL or any other method. Is there a possibilty in CFX to calculate the divergence of a Sourceterm?
Or is it possible to define something like a "slip velocity" for a scalar transport equation? The convection term should then look like this:
div(rho*Psi*(U-+U_slip)) where Psi is the general transported scalar
Thanks a lot!!!!!! I tried a lot by using "diffusive transport equations" (the main idea was to hide the thermophoretic velocity in the duffusioncoefficient) but nothing works.
I'm very thankful for every tip!
With best regards,
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