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-   -   writing a 3d NS solver in the primitive variables! (https://www.cfd-online.com/Forums/main/2695-writing-3d-ns-solver-primitive-variables.html)

 lostsoul October 16, 2000 02:43

writing a 3d NS solver in the primitive variables!

hi guys! i am trying to write an inviscid incompressible NS solver in the 3d cartsian domain (the simplest!) in the primitive variables. i would be glad to get any free source code for reference , or list of any material which would be helpful for me especially the boundary conditions in 3d. thanks for all. thorougly lost, lost soul!

 Abhijit Tilak October 18, 2000 00:41

Re: writing a 3d NS solver in the primitive variab

hi lostsoul (???),

the best reference material would be patankar's book named "Numerical Heat Transfer and Fluid Flow" by S.V.Patankar (Hemisphere Publishing Co) to start with.

good luck abhijit

 Rabibrata October 18, 2000 06:25

Re: writing a 3d NS solver in the primitive variab

Let me know the system U are considering. Whether it is unsteady state or SS. Also if there is any liquid entering or leaving your system.

Regards Rabibrata

 vijay pargaonkar October 19, 2000 01:51

Re: writing a 3d NS solver in the primitive variab

Dear,

Yes, patankar's algorithm is most robust. Writting your own code is better than using somebody else's code.

pargaonkar vijay

 lostsoul October 20, 2000 02:52

Re: writing a 3d NS solver in the primitive variab

hey rabibrata! its actually a unsteady problem where i have to consider a flow behind a body.. an inlet and then the sqr body and then the outlow. could any of you end me the governing equations at the boundaries? that would be great.. i guess there is some problem in modelling those thanks a less lost lost-soul!

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