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学习模型库中的现有例子时,计算出现不收敛,应该怎么解决啊?
(COMSOL_Multiphysics/Fluid_Dynamics/cylinder_flow)
Progress - Create Mesh: Sat May 15 15:00:17 CST 2010
================================================================================
Number of vertex elements: 8
Number of boundary elements: 226
Number of elements: 3352
Minimum element quality: 0.8614
================================================================================
Progress - Solve Problem: Sat May 15 15:01:01 CST 2010
================================================================================
fem.sol=femstatic(fem, ...
'symmetric','off', ...
'solcomp',{'v','u','p'}, ...
'outcomp',{'v','u','p'}, ...
'blocksize','auto', ...
'hnlin','on', ...
'linsolver','pardiso', ...
'uscale','none');
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Number of degrees of freedom solved for: 15649
Iter ErrEst Damping Stepsize #Res #Jac #Sol
1 0.14 0.0001000 0.14 2 1 2
2 0.18 0.0000451 0.18 3 2 4
3 0.17 0.0000949 0.17 4 3 6
4 0.18 0.0000923 0.18 5 4 8
5 0.17 0.0000950 0.17 6 5 10
6 0.18 0.0001252 0.18 7 6 12
7 0.28 0.0000054 0.28 9 7 15
8 0.4 0.0000037 0.4 10 8 17
9 0.45 0.0000105 0.45 11 9 19
10 0.38 0.0000222 0.38 12 10 21
11 0.33 0.0000298 0.33 13 11 23
12 0.22 0.0000417 0.22 14 12 25
Error:
Failed to find a solution:
No convergence, even when using the minimum damping factor.
Returned solution has not converged. |
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