请问CST中Mesh line ratio limit是什么意思？

12-08

为什么FDTD或者FIT-TD的自动网格划分
除了定义lines per wavelength
还要定义Mesh line ratio limit呢？
不能理解这是什么意思。
谢谢!

Mesh line ratio =dx/dy或是dz/dy,有这个参数似乎可以保证总体的协调，而且这似乎是the most important.

这和你仿真的精度还有结构有关系
一般如果内存足够，结构差异又比较大（就是电磁分布不均匀）可以考虑适当设定高一点

"The mesh line ratio limit is probably the most important parameter, it finally governs the achievable structure resolution and might have a perceptible influence on the simulation time. Generally it tells you how much smaller the smallest distance between two mesh points is, compared to the largest distance." (digested from manual)
yet 'line per wavelength' means the density at least.
so imho 'mesh line ratio limit' -> upper limit of resolution in some degree and some sensitive locations.
'line per wavelength' -> the lower one

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