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[求助] turbulent viscosity limited to viscosity ratio

fluent模拟时出错如下:我是否重点进行网格、边界层和初始条件改善?哪个方面问题更大?如果才能更好解决?谢谢各位大神。
turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 840 cells
   138  2.6876e+02  2.0199e-02  2.2384e-02  2.9955e-01  4.9826e-03  1.0130e+00  5.1699e+01  5.3530e-02  0:02:13   18

turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 1439 cells
   139  7.8048e+02  2.0619e-02  1.6704e-02  3.2742e-01  4.4974e-03  2.0628e+00  1.1301e+02  5.5346e-02  0:02:04   17
# Divergence detected in AMG solver: epsilon -> Increasing relaxation sweeps!

Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Divergence detected in AMG solver: epsilon
Primitive Error at Node 0: floating point exception

Primitive Error at Node 1: floating point exception

Primitive Error at Node 2: floating point exception

Primitive Error at Node 3: floating point exception

Primitive Error at Node 4: floating point exception

Primitive Error at Node 5: floating point exception

Primitive Error at Node 6: floating point exception

Primitive Error at Node 7: floating point exception

Error: floating point exception
Error Object: #f
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