How to apply two or more interpolation schemes when using Topology...
Dear Mr./Mrs.,The latest COMSOL 5.4 version has integrated the Topolgy optimization node in "definition". The filter as well as the projection can be accessed more conveniently compared with previous...
View ArticleStep function in a time-dependent problem
Hello everyone,I am trying to implement a step function in my time-dependent problem where I want to lower the temperature of a constant temperature boundary from 40°C to 20°C after 10min (600s) of...
View ArticleHelp For Studying current distribution in a grounding grid
I'm studying current distribution in a grounding grid buried at depth h=100 m below the earth surface . I am using magnetic and electric field interface in AC/DC module.Normally when current flows in a...
View Articlehow to use step function?
I want to apply a current in electrochemistry model. However, if I set a step fuction to the current, where do I use the step fuction?
View ArticleHave problem with Particle Tracing for fluid flow!
Hi everyone! When I simulation with Particle Tracing for fluid flow! I met one warning like this: "Some particles have been removed from the simulation because maximal number of wall interactions...
View Articlemodelling of metal hydride reactor
How can i use the heat transfer in porous media interfaces for modelling of metal hydride reactor (MgH2)? i need step wise procedure.
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mailing service solves your technical issues in one minute . It is always important to contact with the support team of sbcglobal because they knows the solution for all the major and minor issues that...
View ArticleHeat source simulation
Hi, I'm a complete comsol newbie. I'm trying to run a simulation that seems to be quite simple yet somehow I keep getting errors upon computing (usually the error is "The Relative Residual (x) Is...
View ArticleCan I use de Pipe Acoustics Module to study a pressure wave that came from...
I want to study how a pressure wave travel a long a pipe. That pressure wave came from explosion in a combustion motor. I'm using the pipe acoustic module, but the results in my simulations were...
View ArticleMeshing techniques in comsol
I want to know if any there are any meshing techinques that can solve a complex domain consisting of extremely small and sensitive domain elements. (finer than extremely fine). I am using COMSOL...
View Articleusing Prev operator
hello all,I am trying to create a condition were the solution of a present formula gets automatically added with the solution of the same formula from the previous time step. for this i used...
View ArticleTesla coil in comsol
hello, please I'm investigating how to transmit electrical power in the form of radio frequency from one coil to another, something like the tesla coil. radioactive and noninductive coupling. can you...
View ArticleTime Dependent Analysis of A Spiral PCB Coil
Hello, I am trying to model the magnetic field around a PCB coil during a tone burst excitation. I have modeled the PCB coil and the model runs correctly with a stationary study including a parametric...
View ArticleHow to change the range of values in the legend bar?
Hello world,I am looking for a method to change the range of values on the legend bar.I did simulations of a mebrane deflection under different loads and computed for the von mises stress (also see the...
View ArticleHow to limit the range of dependent variable？
I want to solve the PDE in comsol in the special range for dependent variable. For example, the dependent variable,i.e., the concentration c is limited to c<=0.2 in the PDE, how to do?
View ArticleCOMSOL simulation of plane wave
Hello! In the comsol pressure acoustic module, I can simulate the diffusion of sound waves, then I want to simulate the absorption of sound waves in pure media. What module should I use?Thank you!
View ArticleHow to increase a load in a physical time
Hi everyone, I started to realize a preliminary breast computational model with COMSOL: first have to study the gravitational effect on it, by increasing the gravity progressively from zero at initial...
View ArticleReaction Force
Hi there,I am setting a prescribed displacement on a rigid body. How can I get the reaction force of prescribed displacement on this rigid body?Thanks in advance, Ke Wu
View ArticleHow to vary the evaluation number during continuation approach for solving...
Dear Mr./Mrs.,The latest released example "Bracket — Topology Optimization" demonstrate how to implement the continuation approach in topology optimization problem, please refer to the following...
View ArticleTransfer data from one module to another
How I can transfer data from AC/DC module to wave-optics module?
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