如何使用 COMSOL Multiphysics® 模拟霍尔效应传感器 霍尔效应传感器通常用于位置检测,它的基本工作原理是附近的磁场使通过半导体传感器的电流路径发生偏转。电流的这种偏转会导致电位变化,这种变化是可以测量的。尽管这种设备具有多物理场特性,但通过几个假设,我们就可以在 COMSOL Multiphysics® 软件中非常简单地对它进行...
对于简单的情况,也可以将解析表达式作为离心率的函数计算轴承的动态特性。COMSOL Multiphysics 还提供了一种通过液体动压轴承接口计算关节中润滑膜动态特性的方法。该接口内置于转子动力学模块中(COMSOL Multiphysics 和结构力学模块的附加组件,用于模拟液膜轴承中的流动。另外,要考虑黏性阻力,应将关节力(或力矩)施加到关节...
了解如何在 COMSOL Multiphysics® 中建立和运行模型,对学习使用软件的过程至关重要。遵循简化的建模工作流程,可以帮您更好的学习使用软件。您可以在软件的用户界面中查看工作流程简介。 本教程将指导您完成模型的构建,并为您详细介绍建模工作流程,具体包括以下步骤: 设置模型环境 建立几何图形 设定材料属性 定义物理...
With the release of version 5.5 of the COMSOL Multiphysics® software, there is a feature for tracking the state, or history, of your model. TheState Variablefeature simplifies the tracking of the history of a field over time. These variables can also be used to affect other fields, such ...
Concluding Thoughts on How to Inspect Your Mesh in COMSOL Multiphysics® We have discussed three different ways of inspecting a mesh, which can be used to spot regions with low-quality mesh elements. Now that we know how to find out where the low-quality mesh elements are, we can either...
As always, you can modify any expression in COMSOL Multiphysics. In this case, we could multiply the in-plane directions of the flow field by a large factor, but it’s even easier to simply set they-component of the arrow plot to zero: ...
we can not remesh the deformed configuration. If we do select the check box, COMSOL Multiphysics will include nonlinear terms in the strain tensor. What if we have a problem with infinitesimal strains and do not want to include expensive and unnecessary nonlinear strains in the equilibrium equatio...
This is one of the simplest types of coordinate formats that COMSOL Multiphysics can import. In the software, it is called theSpreadsheetformat. In this format, you can use an optional % (percent) character to indicate a comment line. Values and indices can be separated by space, comma, se...
these devices can give an integrated picture of the geometry, materials, and physical phenomena that are present. I asked my colleague, Jiyoun Munn, to teach me how to show RF radiation in an SIW antenna using the postprocessing tools available in COMSOL Multiphysics. Here’s what he told ...
As before, we can use adaptivemesh refinementto let COMSOL insert more elements into regions where the error is estimated to be large: We observe that smaller and smaller elements are being inserted at the inside corner of the sharp hole. Let’s also plot out the stresses at this inside co...