Active discussions in the forum
Announcement: It’s here! Welcome to the new user forum.
The COMSOL discussion forum has a new design and we hope that you find it intuitive and easy to use. Along with the new look, we have focused on improved usability, search tools and tagging, as well as a mobile-friendly... Read more »
Posted 1 week ago
Announcement: Now available: COMSOL 5.3 Update 3
Hello, I'm pleased to announce that COMSOL 5.3 update 3 is now available. The easiest way to install the update for COMSOL Multiphysics® is to start the program and then select Check for Product Updates. - If using the... Read more »
Posted 2 weeks ago
How do I model rigid ball impacting a composite plate?
Hello, I am new to COMSOL and I am trying to build a model of a small steel ball impacting a composite plate, similar to figure 1 in this paper:... Read more »
Posted by Alec Yenawine 26 minutes ago
Electric current and link with Magnetic and Electric fields module
Hi Everyone, I would like to run a model of 3 conducting layer between them there is insulation. There are a connection between the 3 layers at one pooint that allows the currents flow. I have done this by making an electric... Read more »
Posted by Ahmed Hemeida 2 hours ago
What to do with this error " Failed to find consistent initial values. Undefined value found.Undefined value found in the stiffness matrix"?
Hi guys, I'm trying to simulate 3D model of Vibrating beam in fluid flow which has a 2d counterpart in Comsol application gallery. I've met this kind of frequent error like shown below. I checked the boundary conditions... Read more »
Posted by Chuanliang Xie 2 hours ago
last time step did not converge when deleting the outlet or outflow in physical fields
I am simulating the process of ice melting. I used the physical fields of laminar two-phase flow(phase field) and heat transfer in fluids. First time the computation gave a reasonable result with the outlet boundary added. But... Read more »
Posted by Lydia Wong 7 hours ago
Modeling interface movement during evaporation of a single water droplet
Hello, I am trying to model the evaporation from a single water droplet (initially at 50 degrees celsius) evaporating into stagnant air (initially at 20 degrees celsius). I want to have movement of interface due to mass loss... Read more »
Posted by Vaidehi Oruganti 16 hours ago
Error: dependent variables are not coupled to all degrees of freedoms in the model
Hello! I am trying to run the following model, but keep getting an error: "The following dependent variables are not coupled to all degrees of freedoms in the model: comp1.cPAHx, comp1.cPAx. - Domain: 1" Are there... Read more »
Posted by Lawrence Renna 16 hours ago
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COMSOL Blog
Modeling Irregular Shapes: How to Import Curve Data and Loft a Solid
Irregular shapes can come in several different formats. For example, we have previously discussed importing STL files and NASTRAN® meshes into the COMSOL... Read more »
Silicon Photonics: Designing and Prototyping Silicon Waveguides
In 1870, an audience watched as a stage was set with two buckets, one on top of the other. Due to a small hole in the upper bucket, water poured into the lower bucket,... Read more »
Studying the Thermal Performance of Phase Change Materials
Maintaining an even temperature for buildings in hot climates often requires a lot of energy. One option for improving thermal performance is by including phase change... Read more »
Happy Birthday, Sir Mokshagundam Visvesvaraya
Sir Mokshagundam Visvesvaraya (also known as Sir M.V.) was perhaps the most influential engineer in the history of contemporary India. A scholar and statesman, he... Read more »
Predicting the Sound Emission of a Muffler Design via Simulation
Guest blogger Linus Fagerberg from Lightness by Design returns to share a novel approach for predicting external noise generation in muffler designs. In recent... Read more »
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