Top 5 Reasons Why We Use COMSOL Multiphysics
- Märt Kasukas
- Jul 12
- 4 min read
Updated: Sep 27
From time to time, we receive questions about which functions in COMSOL Multiphysics we appreciate the most. Here are the key features of this commercial tool, sorted from the most popular among consultants collaborating with Simulation Guys.
Unified GUI
The most important aspect of COMSOL Multiphysics is its unified Graphical User Interface (GUI). The software integrates all functionalities into a single, easy-to-navigate interface. This allows users to move seamlessly between different modules (physics) and even switch quickly in the model-building process, e.g., from mesh to geometry and back. This improves workflow efficiency. The intuitive "Model Tree" layout encourages exploration by the simulation engineer. Building a simulation model in COMSOL Multiphysics is a similar feeling to playing with LEGO bricks.
Limitless Multiphysics
COMSOL Multiphysics has earned its name "Multiphysics" due to its exceptional ability to couple various physical phenomena. The user can choose between one-directional and bidirectional coupling (sometimes referred to as weak and strong coupling). One-directional coupling simulates two physical phenomena, where one depends on the other, but the other is completely independent of the first, or you only wish to neglect the feedback dependency.
Why is this important? One-way coupling is significantly computationally simpler and can reduce computational cost. However, it is not possible to use it for phenomena that are strongly dependent on each other and vice versa. Consider fluid-structure interaction in a channel with flexible walls. Change in pressure influences channel geometry, which in turn influences the fluid flow. In the simulation with three or more physical phenomena, you have the opportunity to create a combined coupling - connecting some of the physical phenomena bidirectionally and others one-directionally.
Number of Modules
COMSOL Multiphysics offers a wide range of modules covering various physics disciplines, including chemistry. Users can buy specialized modules tailored to specific fields such as electromagnetics, heat transfer, fluid dynamics, and structural engineering.
Some modules are highly specialized and have no reliable alternative in a world of trusted commercial simulation software with a unified GUI. For example, electron microscopy manufacturers highly rate the Particle Tracing Module, the Molecular Flow Module, which serves perfectly in all sectors that operate under vacuum, the Semiconductor Module in the semiconductor industry, and the Plasma Module or the Electric Discharge Module. While there are commercial alternatives for some modules, they do not allow such multiphysical capabilities. For example, the RF Module, which is very well mastered by Simulation Guys, can simulate thermal deformation of antennas, unlike the competing CST Studio (SIMULIA).
With over 40 modules available, the software serves in all possible industries, from defense to semiconductors and medical devices. We can rely on its capability in multidisciplinary projects.
Plenty of Handy Tools
Another fact supports the universality of COMSOL Multiphysics. Compared to other commercial CAE software, its basic package includes a long list of interesting tools and functionalities. At the core of COMSOL Multiphysics are tools for simulating user-defined equations without the need for programming (so-called Equation-Based modelling), parametric studies, adaptive mesh refinement, user-defined coordinate systems, several types of functions including interpolation, the ability to refine initial conditions in highly nonlinear models using Auxiliary sweep, deep neural networks for creating digital twins, recording of the model methods (programming) and advanced post-processing tools. For highly precise industries, the Uncertainty Quantification Module can be purchased, which enables the statistical evaluation of the impact of input parameter tolerances on simulation outcomes. Last but not least, we must mention the Application Library supplied by the software. COMSOL refers to over 1,000 models in its library, serving as a valuable support tool and source of inspiration.
Application Builder, COMSOL Server, and Compiler
Do you need small simulation software for your specific needs? Another key feature of COMSOL Multiphysics is the capability to create customized Graphical User Interfaces (GUIs) using the Application Builder. The created application can be delivered to students, customers, or product experts in large R&D centers. COMSOL offers two additional software tools to spread applications. COMSOL Server enables the distribution of applications that can be accessed in a web browser, and COMSOL Compiler lets you compile applications into a standalone offline software (e.g., an exe file).
Conclusions
Overall, COMSOL Multiphysics is our choice in simulation software due to its unified GUI, limitless multiphysics capabilities, extensive numerical tools, specialized modules, and customizable application features. These elements create a rich environment for innovation and precision in the modeling of complex products or processes.
Are you seeking assistance for a COMSOL simulation project?
Try our innovative service: COMSOL Multiphysics consultations. Our consultants, working in various R&D institutions, will share their long-term experience during online meetings to teach you how to set up your model on your own COMSOL license.