[NaderNekoubin]

Can we use the SIMPLE algorithm in cylindrical coordinate for Non-Newtonian fluids?

[mprinkey]

Originally Posted by NaderNekoubin

Can we use the SIMPLE algorithm in cylindrical coordinate for Non-Newtonian fluids?

SIMPLE in cylindrical coordinates has been done since the 1970s. Coordinate system really doesn't matter--except you do need to be careful with the values/discretization at the centerline.

Non-Newtonian fluids can be very tricky if they include memory effects (think cake batter or corn starch mixtures) If your fluid has a simple viscosity function (function of maybe termperature or composition), SIMPLE should not be a problem. CFD techniques for more complicated rheologiesl can be very specialized because the non-linear effects of the stress-strain relationships can overwhelm the "normal" non-linearity and inter-field coupling present due to momentum transport and pressure-velocity interaction and solution approaches will need to take that into account. I can't offer you much more advise along those lines because I haven't had to deal with them before.

[NaderNekoubin]

Dear Michael,

Thank you for your helpful reply. Could you please introduce me a paper or a source which used the SIMPLE algorithm in cylindrical coordinate? I really appreciate your help.