Chladni Plate Simulation App - How to change it to visualize a continuous...
Hi!I have just found this simulator for Chladni Plates: https://br.comsol.com/model/chladni-plate-67591I have no big simulation expertise, and my experience with COMSOL is relatively new. I'm trying to...
View ArticleHelp with Simulation
Hi, I have some problems with a Nelder-Mead's optimization in frequency domain...is anyone available for a help? I obtain in the global constraints a lot of NaN except for the last frequence...probably...
View ArticleIn the process of simulation of lithium-ion battery, the simulation was...
In the process of simulation of lithium-ion battery, the simulation was forced to stop when the concentration of electrolyte decreased to zero at a certain point. However, this situation usually...
View ArticleWhy the solutions from the magnetic field with a union form geometry doesn’t...
Hi, everybody,I have a multiple physical field (magnetic field and structural field) coupling model to be solved.The magnetic field has a union form geometry, and it has been solved already.Then I want...
View ArticleCompile issues related to External material model
Dear all:I programed an external material model in which the utility functions provided by COMSOL are used. However, I encoutered some issues related to these utility functions when I was trying to...
View Articlepoint charge
hi all How can I simulate the electric field generated by two point electric charges? We would be grateful for any hits how to proceed. Also if there is a existing COMSOL model that can do this or...
View ArticleProblem with creating a cross section of an imported 3D CAD (STL)
Dear all, I have a 3D CAD imported geometry in Comsol 5.3 a , I want to create the cross section of this geometry in 2D. I follow the standard instructions, starting with creating a workplan in 3D and...
View ArticleUsing an Analytical Pulse Voltage Source on an Arbitrary Electromagnetic...
The below post is related to an archived discussion[start here]It seems the previous thread was not answered. It has been over 2 years since it was posted.I am atempting to use a very similar pulse...
View ArticleSpring foundation unconstrained domain
Hi,I am modelling an time dependent FSI problem; wave interaction with discrete floating sheets. Laminar flow with phase field is used to model the air-water fluid domain. Multibody dynamics with FSI...
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the initial potential V_init cannot be read
Semiconductor simulation, the initial potential V_init cannot be read
View ArticleAmbient thermal properties defined as variables
Hi users,I'm studying a rather simple case (1d) where I have defined some heat and moisture transport with the use of PDEs. The reason I'm not using the predefined heat transfer modules is due to an...
View Articleneed to know how to customise the equations
Dear members , can anyone please kindly let me know, how to customise equations in heat transfer
View ArticleUsing Mode Analysis as base for Frequency Domain, Modal Study
Dear All,I'm trying to simulate guided waves using the SAFE approach, which is basically a 2D solid mechanics simulation with out-of-plane harmonic extension. Using mode analysis for a specific...
View ArticleDielectric Materials in Capacitor
Hi everyone! I have created a capacitor using Comsol 4.3b. I've set as dielectric material silicon and air. I need also to test the field by using also other materials such as teflon etc. However, when...
View ArticleHow to describe a function for current circulating in a coil?
In my model (Induction Heating) I want to represent the current that circulates in a coil through a time dependent function. I chose a function generated through value interpolation (figure). However,...
View ArticleSimulation breaks when adding more than two numeric ports
Hello, I am trying to simulate a straight rectangular waveguide with a half ring very close to it. As long as the simulation has two ports it works fine. But as soon as I attach an 3rd numeric port to...
View ArticleSchrodinger-Poisson Parametric Sweep
Hello,I would like to determine the wave functions for multiple quantum well models with varying well/barrier dimension; i.e. one model with one set of parameters repeated (2/5/2/5/2), and another with...
View ArticleGeometry with repeating Units
Hi, I would like to do the 3D analysisi of an FSI problem. The structure consist of many repeating units, say it looks like a honeycomb structure. The edges of one hexagonal unit are the contact pairs...
View ArticleChange the voltage type from AC to DC
hi, I have insilator geometry in COMSOL. Earlier I simulated it using AC voltage. How can I change the voltage to DC from AC?
View ArticleContact modelling in a flexion test
Hi, trying to learn a bit more about contact modelling.I'm trying to model a simple three point flexion test, with a piece of metal between three rollers, the one on top moves down with a given force,...
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