Defining wires in 3d models
I am trying to simulate a process that includes flow, electrostatics and mass conservation. The model is simply a rectangular. One edge is grounded and the opposite includes 59 wires. The grounded edge...
View Articlevolume within a closed isosurface
Hello WIthin a 3D domain containing closed isosurfaces, is there a way to calculate the volume of material contained within each isosurface? Many thanks Dan
View ArticleTime dependant signal at inlet
Hi all! I am trying to implement a time-dependant inlet velocity. What does 'location' mean and what unit is associated with this variable? Is it time or length? If length, is it meter of millimeter?...
View ArticleProjection of an Isosurface onto a plane or boundary
Hello Another visualization question: Is it possible to plot the projection of an Isosurface in 3D space onto a 2D surface or plane (such as the x-y plane). Thanks in advance Dan
View ArticleExtract voltage with lumped port?
Total COMSOL newbie here, please be gentle :-) After some struggle and a lot of looking at the model library, I managed to set up a simple 2D model of a plane wave incident on a pair of metal strips...
View Articlestudy
sir, I got different voltage for the same frequency value when i compute in frequency domain and in eigen frequency which value is correct
View ArticleHeat continuity
Good afternoon! I need an advice about how to use the heat continuity option please. The task is to describe the following situation: in my model, there are some details that are physically not in...
View ArticleComputing physic in dependence of another physic
Does anybody know, if there's a model in the model gallery, where you compute a pyhsic in dependence of another physic?
View ArticleElectric Field Simulation Problem
Hi, I am trying to create a plot of electric field, but i failed to do it. I created a simple model of column, and I used the physics of "Magnetic and Electric Fields". I defined a electrical potential...
View ArticleNeed help: Error whenever trying to simulate periodic boundary condition in...
Hi Everybody, I'm trying to do 3D RF module simulation with periodic boundary condition on the sides. Every time i start the computation, i keep getting an error that says : Unknown function or...
View ArticleCOMSOL Releases COMSOL Multiphysics version 4.3a
We at COMSOL are proud to introduce version 4.3a of COMSOL Multiphysics to the COMSOL community See: www.comsol.com/products/4.3a/ This introduces: * LiveLink™ for Excel® * LiveLink™ for Solid Edge® *...
View ArticleCAD import file boundary conditions
I have a 2D model I've imported from CAD that consists of many interlinked hexagons making up a larger hexagon (like a big hexagon with smaller hexagon-shaped holes throughout). I'm trying to do a...
View ArticleTemperature mapping with Model Coupling
I wish to generate temperatures in a model and subsequently map the temperatures them to a similar model in a different study. The two models will have the same geometry. However, the model will be...
View ArticleEvaluate the electrical voltage from the magnetic field (mf) physic
Hi ! I need to calculate the electrical voltage of an electric conductor subdued to a magnetic field. The conductor is excited by a current density using magnetic field physic (mf). I want to simulate...
View ArticleLaminated core
Hello everyone, I’m interested in simulating the induction heating of an object that occurs with the help of a rectangular coil that is placed above it. The problem that I’m facing is that I want to...
View Articlesinusoidal voltage to time dependent solver
I am trying to apply sinusoidal voltage to a model with time dependent solver. I apply the voltage based on a function but it doesn't show anything. the model is attached. thanks
View Articleconstraining the range of dependent variables
Hello, I have implemented an axisymmetric drift-diffusion equation using the equation-based modeling interface in COMSOL 4.3 (incorporating the necessary terms due to the curvilinear coordinates). I...
View ArticlePerforming mathematical operations on the data exported from COMSOL
Hello, I have completed a simulation on Microwave Imaging in COMSOL and have exported the Normalized Electric and Magnetic field. As further processing steps I need to perform Integration, gradient,...
View ArticleHow do I move the location of Legends in a Line Graph?
It is by default in the upper right corner, how do I move the location of the Legend? I am using COMSOL 4.3
View ArticleParallel computing MatLab Comsol
Hi, I am using Comsol 4.3 with Livelink for Matlab. I run an optimization code in Matlab where i call Comsol to perform frequency response simulations. Now i would like to start two parallel frequency...
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