技术支持知识库

All Solutions

1264: Fortran 运行时库中的内存泄漏

我在多核处理器上反复运行一个使用 MUMPS 求解器的模型时,发现内存消耗逐渐增加。 请确保您安装了 COMSOL Multiphysics 5.4 最新版本。 安装说明 Windows 下载文件...
版本: 5.4 - 平台: Windows,Linux

1263: The MUMPS solver crashes or hangs during Cluster Simulation

When running large models on a cluster with COMSOL Multiphysics 5.4, the MUMPS solver hangs or crashes. Please make sure that your COMSOL Multiphysics 5.4 installation is up to date. Installation...
版本: 5.4 - 平台: Windows,Linux

1262: Improving convergence of transient models

Transient models involve computing a solution that varies over time. To do so, the software begins with the given initial conditions and computes the evolution of the unknowns using one of several different...
版本: All versions - 平台: All Platforms

1261: Performing a Mesh Refinement Study

How do I gain confidence in the accuracy of the solution to my problem? How do I perform a mesh refinement study? All of the numerical methods used within COMSOL Multiphysics® discretize the modeling space via a Mesh...
版本: All versions - 平台:

1260: What to do when a linear stationary model is not solving

I am solving a linear stationary finite element model but the software is not solving. Why? What can I do about this? A linear finite element model is one in which all of the material properties, loads, boundary...
版本: All versions - 平台:

1259: How can I implement a user-defined Multiphysics coupling?

I would like to define my own customized coupling between two existing physics interfaces. How can I do this? How can I find the names of the variables that I will need to use? The ability to define arbitrary, and...
版本: All versions - 平台:

1258: Understanding the Fully Coupled vs. Segregated approach and Direct...

How, and why, switch between a fully coupled and a segregated approach to solving a multiphysics model? How, and why, switch between the direct and iterative linear system solver? Fully Coupled versus Segregated...
版本: All versions - 平台:

1257: Solving electromagnetic heating models with high-frequency loads

I am solving a Multiphysics problem involving electromagnetics and heat transfer. The electromagnetic fields are varying at a constant frequency, and the period is very short compared to the timespan over which the...
版本: - 平台:

1256: I get an error message when trying to open my glTF-file in an...

After exporting a glTF-file from my COMSOL Multiphysics model, I get an error message when I try to open it in an external viewer. The most probable cause for this issue is that the external glTF-file you are using...
版本: 5.4 - 平台: All Platforms

1255: Reducing the amount of solution data stored in a model

My models contain a lot of solution data, and I do not want my file sizes to get too large, it takes a lot of disk space. What can I do to reduce file size? Will this reduce the time it takes to solve the model? File...
版本: All versions - 平台: