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sun993743588

新虫 (初入文坛)

[求助] comsol显示错误求助

error:
Repeated error test failures. May have reached a singularity.
Time : 0.6473375674255059
Last time step is not converged.

warning: MUMPS allocation factor increased to 1.44.

请问各位大虾,error和warning显示的内容是什么意思呢?如何解决~~~
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sun993743588

新虫 (初入文坛)

error
Repeated error test failures. May have reached a singularity.
Time : 0.6473375674255059
Last time step is not converged.
解答
During a time-dependent solution, the error tolerances
could not be met despite reducing the time step to the
minimum value allowed.
求MUMPS是什么意思?
2楼2013-01-07 17:17:43
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simulation

金虫 (小有名气)

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xiegangmai: 金币+1, 谢谢参与! 2013-01-24 19:31:26
sun993743588: 金币+5 2013-05-25 16:18:30
MUMPS是一种直接式求解器。
3楼2013-01-24 12:51:52
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mikefallon

木虫 (小有名气)

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xiegangmai: 金币+2, 鼓励讨论交流! 2013-01-24 20:47:01
sun993743588: 金币+5 2013-05-25 16:18:26
这个error message估计是COMSOL里边最多见的错误提示了吧,说的大概是求解过程陷入一个奇异点,进行不下去了。
一般编的程序里边某个参数设置不科学,或者某个Physics设置不合理,甚至一些小地方设定不全面(比如某个求解域设置不完全),都会出现这类错误。再把自己的程序从头到尾好好看一遍吧。
warning我都一般直接无视了,没有error调通就不错了啊。
4楼2013-01-24 19:51:55
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