Comments on: 在 COMSOL Multiphysics® 中模拟亥姆霍兹线圈 - //www.denkrieger.com/blogs/simulating-helmholtz-coils-comsol-multiphysics 发布博客 Tue, 19 Nov 2024 07:51:52 +0000 hourly 1 https://wordpress.org/?v=5.7 By: Jiliang Cai //www.denkrieger.com/blogs/simulating-helmholtz-coils-comsol-multiphysics/#comment-37263 Tue, 19 Nov 2024 07:51:52 +0000 http://cn.staging.comsol.com/blogs?p=321731#comment-37263 In reply to 博文 甄.

1、设置地磁场的方法可以参考案例：//www.denkrieger.com/model/magnetic-signature-of-a-submarine-291。
2、后处理操作可以参考 ：//www.denkrieger.com/video-training/advanced-postprocessing-operations-part-1

]]> By: 博文 甄 //www.denkrieger.com/blogs/simulating-helmholtz-coils-comsol-multiphysics/#comment-37083 Fri, 15 Nov 2024 13:11:58 +0000 http://cn.staging.comsol.com/blogs?p=321731#comment-37083 您好！我正在做类似的仿真，内容是三对相同的亥姆霍兹线圈对称摆放在空间直角坐标系的三个坐标轴上，给线圈通电流以在三对线圈围成的区域中产生指定大小和方向的磁场。
1.现在我想设置指定大小和方向的外界磁场，用来模拟地磁场，该如何设置呢？感觉这是一个很简单的问题，但我在网上找了很久，都没有看见类似的做法。是在“模型开发器”中“磁场”下的“初始值”里设置磁矢势吗？
2.如何找到空间中磁场最小的点的位置，以及相应的磁场大小与方向？
感谢你们！
Hello! I’m doing a similar simulation where three pairs of identical Helmholtz coils are symmetrically placed on three axes of a spatial Cartesian coordinate system. A current is passed through the coil to create a magnetic field of a specified magnitude and direction in the area enclosed by three pairs of coils.
1. Now I want to set the external magnetic field of the specified size and direction to simulate the geomagnetic field, how do I set it? It feels like a very simple question, but I’ve been looking online for a long time and haven’t seen anything like it. Is it possible to set the vector potential in the “Initial Value” under “Magnetic Field” in the Model Builder?
2. How to find the location of the point with the smallest magnetic field in space, and the corresponding magnetic field size and direction?
Would you please help me? Thank you!

]]> By: hao huang //www.denkrieger.com/blogs/simulating-helmholtz-coils-comsol-multiphysics/#comment-31653 Tue, 04 Jun 2024 03:07:13 +0000 http://cn.staging.comsol.com/blogs?p=321731#comment-31653 In reply to 志远 艾.

艾志远，您好！

感谢您的评论。请注意以下设置：
1.线圈外部的空气域大小，可画较大空气域然后加无限元域；
2.同尺寸二维和三维输入电流大小应该完全相同，不要自行乘2或者改线圈几何因子；
3.注意匝数等设置是否一致。

如果有进一步问题，建议您联系COMSOL的技术支持团队：
在线支持中心：www.denkrieger.com/support
Email: support@comsol.com
谢谢！

]]> By: 志远 艾 //www.denkrieger.com/blogs/simulating-helmholtz-coils-comsol-multiphysics/#comment-31473 Sun, 02 Jun 2024 12:49:16 +0000 http://cn.staging.comsol.com/blogs?p=321731#comment-31473 你好，我在做电磁仿真，同样尺寸的两个线圈，三维和二维轴对称得出的自感互感差别很大，三维结果几乎是二维轴对称的二倍，请问这是怎么回事

]]>