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-   -   coupled vs segregated solver (http://www.cfd-online.com/Forums/fluent/32156-coupled-vs-segregated-solver.html)

sandeep September 17, 2003 13:43

coupled vs segregated solver
 
Has any one compared these two solvers for the same problem? I am trying to run a case( have run 70 iters so far on a 1 million mesh) and coupled -explicit solver shows me 0 pressure on a monitoring surface, while segregated-explicit solver shows me e6 pressure on the same surface. Is this fine?

sandeep

Ed September 18, 2003 02:23

Re: coupled vs segregated solver
 
Hi sandeep,

solver settings are case sensitive, which means that you cannot use both solvers for the same problem. first you have to decide what kind of problem you want to solve and out of that information you choose the solver. coupled solver is for example a good joice if you would like to calculate compressible air flow with supersonic or even hypersonic velocities. seggregated solver is best used for incompressible flow calculations. this two examples should show you the varity of possibilities and therefore its the best to define the problem and to choose the right solver afterwards. mixing both would just confuse you.

have a nice day ed

sandeep September 18, 2003 09:04

Re: coupled vs segregated solver
 
thanks for the reply, I have a mildly compressible liquid flow with low Re. Which solver would be best in your opinion

Ed September 18, 2003 10:35

Re: coupled vs segregated solver
 
from my point of view, I would use the coupled solver.

Sam-CFD August 9, 2010 03:53

Quote:

Originally Posted by sandeep
;108007
thanks for the reply, I have a mildly compressible liquid flow with low Re. Which solver would be best in your opinion

I would consider using only Segregated solver


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