Plot of a line between two points in 3D
Hello, I need to plot a line that describe the electric field between two points in 3D. I tried the way I used to try in 2 D but obviously it didn't work as I wanted. It didn't give me the plot I...
View Articledesign and analysis of 2d single axis capacitive accelerometer
hi, I have designed 2d single axis capacitive comb drive accelerometer, i am getting the same deformation for the different g-forces but displacement value is changing. help option present in comsol...
View Articleinsulated electrode solution interface, assistance requested.
Hello, I'm a beginner with COMSOL and appreciate any guidance that could assist me learn more about this powerful tool. I have a question about modeling the voltage drop across the electrode-solution...
View Article2D coplanar waveguide Port Modeling
Hello everyone, I have a very simple 2 D model of the crossection of a coplanar waveguide (substrate in an air box, at the boundary between substrate and air I have lines for the metallization). I want...
View ArticleHow to calculate a value between two points?
Hello, I have modelled a simple 2D electric potential plot of a dielectric between two plates with a void in the middle. I want to know the voltage between across the void. I can get the plots on...
View ArticleCut Point 3D Point Evaluation
Hi there I am trying to obtain data for a point on my model that is not directly defined within the geometry. I have used the "Cut Point 3D" to add a point on my model, then I was going to use the...
View ArticleCreate Equation
Hi In COMSOL it's given the wave equation (file 1) - PDE waeq but I want to use other form of this equation (see file 2) this means I need to create or modify the equation in the COMSOL how can I do that?
View ArticleHow to simulate the water boiling by Level-Set method
There is a good example simulating water boiling by phase field. I am trying to use the Level-Set method. However, I was frustrated by many times of failure. My problem is how to deal with the...
View ArticleFluid flow channel in cantilever beam
Hello, My model is the following: a cantilever beam has one longitudinal channel containing a fluid flow. My goal is to find the effects of the fluid flow (viscosity, velocity, size of the channel) on...
View ArticleCahn Hilliard type Equation not converging in COMSOL General PDE module
i Have been trying to run this model is COMSOL. I am using the PDE module to solve the problem.I keep geting this error Failed to find consistent intial values. Last time step is not converged....
View ArticleMaxwell Stress Tensor
Hello all, I'm new to Comsol and Im having a little difficulty getting my head around how the Maxwell Stress Tensor operates. I understand its operation when applied to parallel wires (Like in the...
View ArticleMake my model infinite at one direction
In order to make my block having an infinite length in x-direction (as it is a stripe of graphene and extends along its length to infinity) Should I use some specific Boundary Condition??
View ArticleOperate with the solutions of a parametric sweep simulation
Hello I have solved a problem using the parametric sweep simulation. Now, of course, I have a result for echad parameter, now, what I want it is sum all of these results, what I do not how to do it......
View ArticleOptimization of the minimum deviation from measured steady state conversions...
I have correctly assembled the model physics and have a working COMSOL model for the conversion of a certain species. This model does not incorporate any optimization. It is necessary to use...
View ArticleStore the data points into the created table
Hi, I have problem is that what kinds of ''form'' can store into the table. I just want to interpolate the 2-D plot, however, when I want to the store the "2-by-N array" into the table, the problem is...
View ArticleWork on COMSOL through MATLAB
Hi I would like to run COMSOL from MATLAB. I saved the model as M-file and tried to run it in MATLAB. I found the error. MATLAB command line showed ??? Java exception occurred: Exception:...
View Article[SOLVED] "Solution not initialized" when using Livelink for Matlab
(Documenting for others' possible benefit.) This error happened: ============================================================ Error using com.comsol.model.impl.SolverSequenceImpl/getPVals Java...
View Articleparametric sweep
hi, can we use geometry parameter like (length, width, height) in parametric sweep, i want to see how the output changes with variation in geometry
View ArticlePyramid
I know this sound stupid but really hope someone can help me with this.. this is my first time using this software. I've been trying to draw the attached truncated pyramid. but really dont know how to...
View ArticleRectangular input port phase shift possible bug (microwave heating)
Hi all, I'm working with the microwave heating module to simulate the heating of a load with highly non-linear material properties (varying with temperature). I have two input ports both set on ON....
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