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May 11, 2021 at 6:02 pm
Guilin Sun
Ansys Employee这个帖子主要解决CHARGE仿真时 的收敛性问题。
很多情况下,用户需要多方修改一些仿真参数以便得到收敛的结果或者与文献、实验匹配的结果。如果仿真不收敛,很可能意味着下面一些设置可能不合适,需要做适当修改。在高级选项中调整
May 11, 2021 at 7:16 pmGuilin Sun
Ansys Employee应该是高场模型参数不合适,请逐步由零增加到所需要的参数,其它的电学仿真主要问题请参见
June 1, 2021 at 12:05 pmGuilin Sun
Ansys Employee发散常见的错误信息是:
The program terminated due to an error: Initialization failed to converge charge update due to numerical failure.
Error: there was an unknown parallel error. The error code is 9010, the process number is 0
通常与材料特性、网格尺寸与质量、算法等有关。
对应电场较强,或者电场梯度较大的地方,可能需要较细的网格。
当有光吸收时,请检查所设置的光功率不要特别大,要知道DEVICE很小,可能不能承受很强的光功率;
当电压比较小时没有问题,电压高时发散,一般是电压步长太高了,这个情况在仿真雪崩现象时可能更常见。此时需要分几个电压段仿真,后面的文件电压步长变小,并以前面仿真的结果作为初始文件Load上来。
如果3D发散,不容易找出原因,可以先用2D做个截面上的仿真,这样仿真快,可以帮助尽快找出问题。当然,有时2D没有问题,3D有问题也是可能的。
详细介绍请参见 Ansys Insight: CHARGE发散的常见原因
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