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Studies & Solvers Blog Posts

Using the Domain Decomposition Solver in COMSOL Multiphysics®

November 23, 2016

The Domain Decomposition solver is a memory-efficient iterative algorithm that works best for large modeling problems that can’t be solved with other direct or iterative methods.

Minimize Your Model File Size with Storing Solution Techniques

September 2, 2016

Get a demonstration of some tools and techniques for storing selected output quantities in COMSOL Multiphysics®, as well as minimizing model file sizes and the time required to display data.

Plotting the Algebraic Residual to Study Model Convergence

April 27, 2016

Learn how to use the residual operator to plot the algebraic residual of your model, as well as visualize and understand the convergence properties of turbulent flow simulations.

The Power of the Batch Sweep

February 2, 2016

Have you ever run a large parametric sweep on your workstation overnight, only to discover the next morning that the parametric solver is still not finished? Enter the batch sweep.

Guide to Frequency Domain Wave Electromagnetics Modeling

June 30, 2015

Read this blog post for your introduction to the various types of problems that you can solve in the RF and Wave Optics modules with COMSOL Multiphysics®.

Learning to Solve Multiphysics Problems Effectively

December 26, 2013

One of the questions we get asked often is how to learn to solve multiphysics problems effectively. Over the last several weeks, I’ve been writing a series of blog posts addressing the core functionality of the COMSOL Multiphysics software. These posts are designed to give you an understanding of the key concepts behind developing accurate multiphysics models efficiently. Today, I’ll review the series as a whole.

Improving Convergence of Multiphysics Problems

December 23, 2013

In our previous blog entry, we introduced the Fully Coupled and the Segregated algorithms used for solving steady-state multiphysics problems in COMSOL. Here, we will examine techniques for accelerating the convergence of these two methods.

Solving Multiphysics Problems

December 16, 2013

Here we introduce the two classes of algorithms used to solve multiphysics finite element problems in COMSOL Multiphysics. So far, we’ve learned how to mesh and solve linear and nonlinear single-physics finite element problems, but have not yet considered what happens when there are multiple different interdependent physics being solved within the same domain.