Comments on: 对清晰度的追求:在 3 种望远镜设计中追踪射线 - //www.denkrieger.com/blogs/the-quest-for-clarity-tracing-rays-in-3-telescope-designs 发布博客 Tue, 18 Jan 2022 10:14:03 +0000 hourly 1 https://wordpress.org/?v=5.7 By: 敏 袁 //www.denkrieger.com/blogs/the-quest-for-clarity-tracing-rays-in-3-telescope-designs/#comment-10283 Tue, 18 Jan 2022 10:14:03 +0000 http://cn.staging.comsol.com/blogs?p=284791#comment-10283 In reply to Yr 李.

您好,我们在数值计算时,通过网格对建模空间进行离散,计算得到的结果会与网格剖分的粗细有关。经测试,将此案例的网格设置为较粗化、常规和较细化,分别计算得到温度极大值,得到结果的小数点后的数值会有微小变化,上诉结果是合理的。您可以参考关于有限元网格的划分和细化//www.denkrieger.com/multiphysics/mesh-refinement?parent=physics-pdes-numerical-042-32

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By: Yr 李 //www.denkrieger.com/blogs/the-quest-for-clarity-tracing-rays-in-3-telescope-designs/#comment-9563 Wed, 05 Jan 2022 13:47:22 +0000 http://cn.staging.comsol.com/blogs?p=284791#comment-9563 您好,我在学习comsol自带案例-大功率激光聚焦系统的热至焦移(thermally induced focal shift)中,发现随着网格密度的增加,温度计算值与热至损耗通量指发生改变,该现象似乎会随着网格密度的增加而一直变化下去,请问这是怎么回事?期待您的回复,谢谢!

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