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Modeling vibration transmission from motor to PCB
Hello all,I am developping a prototype of PCB that will hold a motor running at constant speed along with a couple of accelerometers. In order to estimate the effect of vibration induced by the motor...
View ArticleLinear motion of a magnet - 3D
Hi, i need to implement the linear motion (at constant speed) of a magnet over a ferromagnetic tube. My goal is to plot the behaviour of the magnetic flux inside the metallic tube. The problem that i'm...
View ArticleRunning a parametric sweep using parametric inputs from another study
Hello. In my project I am simulating a resonant cavity with a microwave input. My goal is to simulate the resonant electric field for a variety of geometries.My current simulation process consists of...
View Article"Unable to write solution data" error in parameter sweep
Hello,I am new to COMSOL. Now I'm trying to calculate a deflection of a piezoelectric bimorph with a complex geometry when dc voltage is applied, . I have created working model which calculated good...
View ArticleHow to fix the problem of non-integer exponent and temperature dependent...
Hello everybody, I'm simulating a porous reactive catalitic media for secondary reforming in an ammonia plant in order to optimize the yield and the selectivity of the process as a function of the...
View ArticleHow simulate electric field using both conductivity and permittivity?
Hi,In AC/DC module, electrostatics simulates electric field using permittivity. Electric currents simulates electric field using material conductivity. What if I want to simulate both?Thanks, Jingyi
View ArticleHow to use previous solution calculate some value and update for each time step?
Hi, I've been tortured by this problem for a long time. Hope there's someone can help me. I'm doing a time dependent heat transfer problem, I need to store value h and Z that I calculated at each time...
View ArticleEkman Spiral
Hi everybody, I'm a student in prep school in France and I try to model an Ekman Spiral on Comsol. The flow is caused by wind and Coriolis force in the ocean. Is it possible to model it on Comsol ?...
View ArticleNew to COMSOL
The below post is related to an archived discussionWould anyone be able to help with this question? I have a similar query.
View ArticleCOMSOL Beginner
Hi everyone,I am trying to design a basic capacitive blood pressure sensor but i do not have any background with COMSOL. I do not know how exactly to do it. I have started with tutorials but not...
View ArticleIs it possible to apply load to an object that is location dependent?
Hello,I'm new to COMSOL and would like to ask if anyone know whether my idea below will work or not?I'm trying to create a model for interaction between two objects with the load being distance...
View ArticleSymmetry in electric currents physics
Hi,I am trying to apply symmetry in electric currents physics in COMSOL 5.3a but I can not find a boundary condition for it. In another forum someone has said that electric insulation works as symmetry...
View ArticleFrequency domain analysis with two different frequencies
Hello,I don't know if the title makes sense. Currently, with a frequency domain analysis I can evaluate steady dynamic response of a system with a set of frequencies for an harmonic load. Instead of...
View ArticleSoft magnet close to permanent magnet
Hello everyone,I'm trying to simulate a pair of soft magnetic tips, actuated by an external permanent magnet.In the folliwing pictures, you can see the two soft magnetic tips. The permanent magnet is...
View ArticleGood in comsol, failed in Matlab: Illegal input vector illegal entity number
Hello every body, I am using comsol 5.4 and I built my model and solved the problem and everything went fine and a good solution was obtained in comsol. Exporting the same exact model to matlab is...
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Trying to fix the "Inconsistent Units" problem
Hi, I'm trying to simulate the Fitzhugh-Nagumo model of neurons on COMSOL 5.3a, exactly as it was done in the article "3D-Simulation of Action Potential Propagation in a Squid Giant Axon" by Appali et...
View ArticleApply a point load on an arbitrary point?
I am a new in Comsol. Now i want to compute frequency response of a composite plate under a point load. i want to define the load on the arbitrary point. So i defined a point at geometry node, but it...
View ArticleBatch importing CAD models into COMSOL?
I'm using SIEMENS NX to create the CAD model which will subsenquently be imported into COMSOL for further simulation. Each CAD model is exactlly the same except for one parameter value. So it's a...
View ArticleDo boundary elements work in eigenfrequency analysis?
I am interested in calculating the mode shapes and frequencies for a structure surrounded by a fluid (air or water) to get the reduced frequency from the fluid loading. When I perform an eigenfrequency...
View ArticleBiot model with Poroelastic Waves or with Poroacoustics?
I'm very new to COMSOL and trying to study a Biot model of a porous material where only the bulk modulus, sound speed, and impedance of the material are known. I know that there is a Biot model in the...
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