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zyq.4669

木虫 (小有名气)

[求助] comsol仿真计算不收敛 very ill_conditioned precondtioner 含义

用comsol仿真电、热、流耦合场,总是遇到:
failed to find a sollution
Divergence of the non-linear iteration
very ill_conditioned precondtioner.The reletive residual error is more than 1000 times larger than the ....
the returned solution is not converged

这样的错误遇到很多次,这里没有给出具体案例,只想问各位虫友,very ill_conditioned precondtioner 是什么含义?
什么情况下会产生这个错误?又该如何解决这种情况呢?
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zyq.4669

木虫 (小有名气)

的确很复杂呀,似乎好多原因都能导致这样错误。

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comsol学习中
2楼2014-11-29 16:47:37
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