Active discussions in the forum
Announcement: Now available: COMSOL 5.3 Update 2
Hello, I'm pleased to announce that COMSOL 5.3 update 2 is now available at: www.comsol.com/product-update This is a quick installation to keep your software current and stable. It applies to version 5.3 of COMSOL... Read more »
Posted 1 month ago
External Current Density
Hello, I am trying to simulate a really simple magnetic field, but encountered an error message that says: [Failed to find a solution. The relative residual (3.4e+037) is greater than the relative tolerance. There was a... Read more »
Posted by Sungyeon Yang 1 hour ago
negative concentration at surface
i am modeling a laminar flow through a small channel with a surface reaction taking place on a small surface of one of the walls. This wall has an initial reactant B on it, which should be converted to product C through a... Read more »
Posted by Jasper N 1 hour ago
velocity profile
I want to represent the following velocity profile u=-αx and v=αy thanks Read more »
Posted by Saja Nabat 14 hours ago
The theory about directional coupler
Hi Sir/Madam, I am pretty interested in the theory which is used to support the tutorial of 'Directional Coupler' in Wave Optics Module. Could you show me some references about it please? Thank you! Best wishes, Kexin Read more »
Posted by Kexin Wang 16 hours ago
Nonlinear term in the Coefficient Form PDE solver
I would like to solve the following equation div ( u grad(u) ) = 0 The problem is I am trying to set the 'c' coefficient to be c = u But it doesn't work. The result will not converge. Can this be done in the PDE... Read more »
Posted by gezibash 1 day ago
How can i change the positon of a imported model in comsol?
Hi, How can i change the position of a imported model? I am importing 2 different geometries in comsol, i want them to be at a specific distance from each other but they are intersecting each other. I cannot find any way to... Read more »
Posted by Deepshikha Bhargava 19 hours ago
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COMSOL Blog
How to Model Generalized Plane Strain with COMSOL Multiphysics®
Many elongated structures can be modeled effectively using 2D representations of their cross sections. A typical assumption is the plane strain approximation, which... Read more »
Modeling Aeroacoustics with the Linearized Navier-Stokes Equations
Detailed modeling of the complex interaction of flow and acoustics is achieved in the COMSOL Multiphysics® software and add-on Acoustics Module using the linearized... Read more »
Investigating the Behavior of an Ancient Organism with CFD Simulation
If you were to travel back in time half a billion years to the Ediacaran period, you would find seas full of strange-looking creatures known to paleontologists as the... Read more »
New FEM Book Offers Modeling Guidance for Biomedical Applications
Today, guest blogger Guigen Zhang, professor of bioengineering at Clemson University, talks about his new textbook on computational modeling for biomedical... Read more »
Introduction to Designing Microwave Circuits Using EM Simulation
When simulating electromagnetic devices, a common mistake is putting everything into a model at the same time, including a complicated geometry, complex material... Read more »
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