Hi!

Does anybody know how the governing equations are linearised in CFX-5.6?

Regards, Märta-Karin

Hi Märta,

It's all in the documentation for the codes. If you are using CFX5 have a look in the solver theory manual. If you are using CFX4 have a look in the solver manual.

There are also a number of good text books on the basics of CFD. Have a look at the books section of CFD-online for a selection.

Regards, Glenn

Hi Glenn,

Thanks for your advice. I've looked in the solver theory manual but I can only find information about how the equations are discretised, do you know if there is some other useful chapter I may have missed? I've also searched in CFD books, but it seems to me as there are several ways to linearise and I would like to know which method CFX-5 uses. In chapter Coupled Solver Theory, it says "coefficient iteration", I would like to know which coefficients and what the iteration process looks like. Do you have any reference to anything you think I should read?

Many thanks, Märta-Karin

Hello Marta,

you might want to try the Theory documentation for TASCflow. Although for the structured code and slightly different discretzation (skew schemes rather than gradient reconstruction) it is a very detailed reference. There also are detailed references to published papers which have even more of the details.

Regards,

Bak_Flow