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Function similiar to AutoCAD's Offset
Quite often I'm drawing a geometry in AutoCAD using the offset function to convert lines to 2d-objects. Now I'm wondering if there is a similar feature also in COMSOL?
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Convective cooling in COMSOL 5.2
Hi, I am trying to learn COMSOL modelling by designing a simple block to study joule heating. There are certain videos available describing the joule heating in a fuse on a circuit board, I have been...
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access a result value within the model to generate force
Hi all, I need to find the pressure difference above and below a shell, along one of its edges, then use it to generate point load on another part of my model. 1. I define a variable of dp_shell with...
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[COMSOL 4.3a] How to set initial stress and strain in Solid Mechanics module?
When I double-click "Linear Elastic material", there is only "Damping" option, no "Initial stress and strain" option. Is there a way to set initial stresses and strains?
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Can I extract the algorithm that corresponds to the COMSOL solution?
Hi! I would like to extract the code of a COMSOL file so that I can interfere when ever I want, How can I do that? Is there any idea? Thank you in advance! PD
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Incident pressure field, can't set frequency?
Hi all, I am trying to apply pressure waves to a mass contained in a closed volume in order to make it vibrate. So far I got it to vibrate, but I can't seem to find a way to set the frequency of the...
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Varying capacitance using electromechanics
Dear Comsol User, I am trying to find variation in capacitance between two plates with applied body load. I defined an air box around the plates. Now I'm trying with electromechanics physics for...
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Geometry - boolean function: difference
Hello, experts, I have sphere inside cube. Should I draw both shapes, after apply function 'Difference' and again past the sphere to avoid overlapping? Some programs require this, what about COMSOL?...
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how to do half model analysis
Dear all, i am doing a simulation where no. of elements and nodes are very large. that is why time taken is very large. my restriction is i can't take larger time step as well as coarser mesh. so all i...
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How can i set boundary condition on a part of a boundary
I import a geometry into COMSOL 5.2 through livelink for SolidWorks. And it's been divided into several domains and boundaries automatically. But I have encountered a problem. I want to set boundary...
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Calculate Drag Coefficient
Background: simulate the drag coefficient for a truck model I have read the following post www.comsol.de/blogs/how-do-i-compute-lift-and-drag/ and looked at the flow over an Ahmed body example which...
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Modeling Insulin Flow Through Porous Adipose Tissue
Hello Fellow Comsol Users, I am getting stuck attempting to model insulin flow. As of now, I am using laminar flow to model insulin being injected from a canulla into adipose. At this point, I used...
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CAD Import Module Error...
Hi, I have created a CAD model and tried to import it into COMSOL, but I was encountered with this error: ''Feature: Import 1 CAD Import Module functionality is not installed. Note: CAD Import Module...
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Hyperelastic materials in Comsol Multiphysics: why there is not a factor 2*...
Hi all! When looking at the "equation view" panel of a hyperelastic material in Comsol Multiphysics it is possible to see how the program calculates the components of the second Piola-Kirchhoff stress...
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geometry toolbar-sweep function
Good morning. I would like to create a 32 plies stack. I have drawn the first block and than i've clicked on Sweep. I don't find the box in which i can edit that i want 31 repetitions of the first...
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Capacitively Coupled devices (Pixel detector)
Hi all, I am new at COMSOL and I have been struggling to find how I can perform the simulation and extract the results that I need. Problem: I work at ATLAS/CERN and I need to simulate a appreciatively...
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Phase change not working, warning inverted element
I am trying to simulate the heating and phase change of a low melting point metal. In the mph file that I've uploaded to Google drive (drive.google.com/file/d/0B3QaD21DDcpNeFdlYjJwNWE4Rzg), you can see...
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Expansion of air volume
Hello, I want to model to thermal expansion of a certain volume of air (in 2D), contained between solid walls and able to expand upward pushing towards a stretchable membrane. I managed to get some...
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About evaluating at a specific time
Hi, When I ran the simulation, the time step is 0.2s, so I can only evaluate at t=1.00 and t=1.2, is there any way to evaluate at t at any time between 1 and 1.2? Thanks, Zhenhuan
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How do I compare the voltage difference of 2 boundaries with respect to the...
Hello COMSOL users, Im am trying to replicate the study attached that was performed at a COMSOL conference but i have ran into complications. (The file is attached below) I don't understand how to get...
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