Free Download of COMSOL 5.3: Solving Common Issues

COMSOL Multiphysics version 5.3 has brought numerous updates to its features, including the Electrochemistry Module and new interfaces for Electrophoretic Flow, Tertiary Current Distribution, and Nernst-Planck. One of the most exciting aspects of this update is the ability to automate any type of modeling task through model methods in the Model Builder.

However, some users may encounter issues when running simulations, such as iterations not being carried out due to maximum time constraints. In this article, we will explore a common problem that can arise when setting maximum time greater than 2.9 seconds and how to troubleshoot it.

The issue arises when trying to compute transient particle trajectories in COMSOL. Users may find that iterations cannot be carried out, resulting in the solver not performing iteration and the particle staying at the inlet. This can be frustrating, especially when working with complex simulations.

To resolve this issue, users should check their log files for errors related to LinErr and maximum time. If the LinErr is non-zero, it may indicate a problem with the solver's ability to iterate. In some cases, reducing the maximum time below 2.9 seconds can help resolve the issue.

Another common challenge faced by COMSOL users is modeling current density distribution in stranded overhead line conductors. These conductors often have multiple layers with different lay lengths and twisting directions. To model this complex geometry, users can use the Coil feature within the Magnetic Fields (mf) physics.

When setting up the Coil feature, users should consider how to assume electrical contact between strands within each layer while insulating layers from one another. This can be achieved by adjusting the geometry to ensure that strands in each layer have electrical contact and layers are insulated from each other.

In conclusion, COMSOL Multiphysics version 5.3 offers a range of new features and updates that can help users automate their modeling tasks. However, some common issues may still arise when running simulations. By understanding how to troubleshoot these issues and using the Coil feature within the Magnetic Fields physics, users can effectively model complex geometries like stranded overhead line conductors.

For those interested in exploring more of the features and updates in COMSOL 5.3, a free download is available on the official website. With this update, users can take advantage of new interfaces, features, and benefits that can help streamline their modeling workflow.

Comsol 5.3 a free download