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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 month 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 1 month ago
The convergency of result in differnent order of BC
Here we will show two different results in simulation but in the same boundary condition(BC). So it must be something wrong. To the geomertry, two Al cicles r=0.43m in a EP rectangular 1*2m, we apply the prediscribed... Read more »
Posted by jiachen luo 26 minutes ago
Meshing of a thin plate
I have a very thin block of 5μm x 5mm between two rollers of 40mm length. For meshing I have specified a normal and a free tetrahedral with maximum and minimum of 2μm and 1μm, but the meshing process takes hours to... Read more »
Posted by Kamran Esmaeili 14 hours ago
Weak form boundary PDE
Hi. I am trying to solve problem of EHD lubrication. I need to type modified Reynold's equation (image1) to Weak form boundary PDE. I am still getting errors. Can you check if my expression (image2) is right? Thanks for help. Read more »
Posted by Štěpán Hrdonka 14 hours ago
Rotating Shaft without defining a Rotating Domain
How accurate and correct is it to solve a mixing problem without defining a rotating domain?, instead, a rotating shaft and their rotational speed are specified. The last one give good results and it is faster than the first one. Read more »
Posted by Javier Hernández 20 hours ago
Ring resonator
The below post is related to an [archived discussion](/forum/thread/15590/coupling-to-a-ring-resonator) *** [start here] Hi, I'm new Comsol user, so i have some difficulties with ring resonator modeling. If You have any... Read more »
Posted by St Fe 0 seconds ago
charge effect
hi im new to comsol and i want to show the effect of 6 sphere charges together.three of them have positive charges and three of them have negative charges. i use surface charge density to this work. in other words i want to... Read more »
Posted by ehsan nikkhah 21 hours ago
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COMSOL Blog
What Is the Physics Behind a Counterweight Trebuchet?
The trebuchet is a large siege weapon that you might recognize from movies set in the Middle Ages or fantasy worlds. This weapon is built on the idea of converting... Read more »
Modeling Surface Reactions in Porous Media and Reactive Pellet Beds
In a previous blog post, we discussed why surfaces are special in chemical reactors. In this blog post, we'll see how surface area is maximized in reactor structures... Read more »
Happy Birthday, George Westinghouse
George Westinghouse was a prolific inventor who helped shape how we use electricity in America and throughout the world. Among his notable achievements, he improved the... Read more »
Analyzing Kelvin Probe Designs with COMSOL Multiphysics®
Kelvin probes provide a nondestructive and contact-free method of measuring the work function differences of various material combinations. These probes can have a... Read more »
Evaluating the Effect of Shell Thickness on Muffler Performance
Guest blogger Linus Fagerberg from Lightness by Design picks up where he left off in his previous blog post to discuss how radiated sound depends on the shell thickness... Read more »
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