# fvTensorMatrix equation solving ?

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 April 7, 2011, 06:28 fvTensorMatrix equation solving ? #1 Senior Member   Join Date: Sep 2010 Location: France Posts: 224 Rep Power: 9 Sponsored Links HI, i have a tensorial equation to be solved for the tensor Y: fvTensorMatrix YEqn when i run the solver i see that: smoothSolver: Solving for Yxx, Initial residual = 0.875064, Final residual = 1.60516e+149, No Iterations 1000 smoothSolver: Solving for Yxy, Initial residual = 0.686555, Final residual = 8.05809e+148, No Iterations 1000 smoothSolver: Solving for Yyx, Initial residual = 0.686555, Final residual = 8.05809e+148, No Iterations 1000 smoothSolver: Solving for Yyy, Initial residual = 0.872595, Final residual = 1.59013e+149, No Iterations 1000 smoothSolver: Solving for Yzz, Initial residual = 0.873874, Final residual = 1.60776e+149, No Iterations 1000 my question is, why Yyx is solved however it is symmetrical, and Yxz is never solved? however In my defintion for Y, i defined it as a total general matrix volTensorField Y. Is it the problem in the fvTensorMatrix Equation ? can it solves a tensorial equation for a general tensor Y? or only for symmetrical defined tensors? any ideas ? thanks, T.D.

 April 9, 2011, 09:09 #2 Senior Member   Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,802 Rep Power: 24 Looks like your mesh is 2-D or the missing components are uniform. Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

 April 10, 2011, 15:59 #3 Senior Member   Join Date: Sep 2010 Location: France Posts: 224 Rep Power: 9 hi thanks a lot prof. hjasak, i solved the problem, it was inside the choice of the solvers' settings in addition to the relaxation-factors. thanks a lot hope to meet soon at the 6th OpenFOAM Workshop in PENNSTATE sincerely yours, T.D.

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