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April 7, 2011, 07:28 |
fvTensorMatrix equation solving ?
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#1 |
Senior Member
Join Date: Sep 2010
Posts: 226
Rep Power: 17 |
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. |
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April 9, 2011, 10:09 |
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#2 |
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,907
Rep Power: 33 |
Looks like your mesh is 2-D or the missing components are uniform.
Hrv
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Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
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April 10, 2011, 16:59 |
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#3 |
Senior Member
Join Date: Sep 2010
Posts: 226
Rep Power: 17 |
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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