Saffman/ Lift Force in Pipe
 

Hi folks.

I'm trying to implement lift force in a slurry flow in a pipe with a custom code.

I'm reading about the Saffman lift force and it seems that there are a lot of different corrections or interpreations on this force.

Does anyone know what is the most adequate/used formula for solid-liquid flows??

I'm using this from the FLUENT manual.
http://www.sharcnet.ca/Software/Flue...th/img7319.gif
And I have some doubts about this one.

The last term is the curl if I'm not mistaken and the previous term is a vector difference, for x, y and z.

Than we will have an external product between two vectors.

I'm having some doubts on how to implement it in 2D as a volume force.
Do I split the equation in X and Y terms? How do I go about this?:confused::confused:

Thanks for your help.

Cheers.

Rui