"circuit" in "terminal"
Dear scholars, I am doing the simulation of cantilever beam, I want to apply a force load to deform the beam and generate electric potential, in which the upper and lower surface of the beam I want to...
View ArticlePDE model issues
I plan to build a two-dimensional axisymmetric model. But when using PDE to model, it is found that the current can only add the circumferential component but not the radial component, so how can I...
View ArticleWelding Heat Source
How to move a heat source in welding 1. Friction Stir welding 2. Arc welding in COMSOL
View ArticlePoisson-nernest-plank equation module
Hello all, I am trying to model the PNP equation through coefficient form module for simulating the cation transportation in the presence of an electric field. Im new to comsol and it's not working...
View ArticleClarification about Electrochemistry Module to Simulate a Cottrell Experiment
Good Afternoon,I am currently trying to perform a Cottrell Experiment by simulating electrolyte diffusing into our working electrode of interest which in this specific case is a 3D thin film. The goal...
View ArticleConvergence problem induced by the fracture
hello everyone, I have a convergence problem about the fracture.My case is a polycrystalline 2D particle. I have two physics, solid mechanics and Transport of Diluted Species. The change of...
View ArticleHow to Input 1000 Simple Supports for a Cantilever Beam
Hello everyone,I am quite new to Comsol and trying to learn it using tutorials however I couldn't figure out something in a structural mechanics model and decided to seek your help. I tried to explain...
View Articleinconsistent unit (electromagnetic waves-frequency domain)
Hello, i write this expression for an electric field (sqrt(240nP)/w)exp(-((y-S/2)^2+z^2)/w^2)exp(j2(pi/L)*((y-S/2)^2)+z^2+x^2). the expected answer should be [V/m]. But i get the message ΄INCONSISTENT...
View ArticleBoundary load on solid in fluid
Hello, I'm trying to model the stokes flow around a solid insert in a ball of fluid. I managed to create a cylinder of steel inside a sphere of water.The cylinder is solved by solid mechanics as a...
View ArticleRF (temw) - emw.rGaindBEfar Issues
I am having issues using the Global Evaluation function emw.rGaindBEfar. I receive this error. Any direction to overcome this problem would be greatly appreciated,Undefined variable. - Variable: x -...
View ArticleSimulation of torque due to electrostatic force
Hello, I am having problem to simulate a COMSOL model. How to simulate rotation of polarized materials due to electrostatic force. I want to show that the polarized materials are acting like dipoles...
View Articlelight coupler
Hello: I want to simulate the light coupling of a section of waveguide into another waveguide. Is it appropriate to use the electromagnetic wave frequency domain method? Then why an error is reported...
View Articletime dependent failed to find consistent values
hi i calculate inductive heating in comsol, when i define the coil with current of 120 A the comsol work without errors and when i define the coil with input of power=1200W (and i try smaller power) i...
View ArticleHow to judge the way of polarization（circular polarization or linear...
Hello，everyone I want to know how to judge the way of polarization（circular polarization or linear polarization）according to the radation pattern of axial ratio in the polar plot group.
View ArticleSimple plate bending 3D - local bending moment
Hi, I have modelled a plate in 3D with a pressure load and some boundary conditions. I want to find the bending moment in the global X and Y directions. When I go to evaluate the results I find that...
View ArticlePlot the average value of a parameter across a geometry component
Hello,I have used COMSOL (5.3a) to solve a time-dependent 3D heat transfer model. I am trying to plot the average temperature of a specific object in my geometry over time. A 2D graph, with time on the...
View ArticleLinear potential distribution
Hello!How can I set linear potential distribution as a boundary condition of the model?Best regards, Mikhail
View ArticleHow to fit each interpolation point by interpolation curve
For 2D drawing interpolation curve how to fit the interpolation point of the command is not very understood, the use of cubic spline?
View ArticlePlotting the angle of the corners of this flapping & rotating plate
Hi Guys,This is a flapping and roatating plate used for simulating an insect wing. When this wing rotates as it flaps it creates torsional force. And, I wanted to plot the angle as a function of time...
View ArticleComsol Ultrasound
Hello. I have a problem with realisation ultrasound with/without the flow. The program calculate sound,s parameters incorrect. Eventually I have an error or mini bunch of the sound near the source, but...
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