what are the things one has to consider when doing a stress test on a chamber...
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View ArticleErrors on simulation. Failed to find a solution for all parameters.
Hi all,I am trying to simulate a model from our study but there are always errors. I am not sure if this comes from the model itself or from the solver. Can anyone help me with this? Errors: - Feature:...
View Articlecarbon-loaded suspension
In a carbon-loaded suspension, in the case of a voltage application, the carbon particles and the ions in the solution are adsorbed by electrostatic interaction. What model should be used to describe...
View ArticleImporting Geometry into COMSOL
Hi,I have access to COMSOL through a student account, which is not compatible with the CAD import software. Due to this, I am struggling to design any complex geometry using COMSOL. I am looking for a...
View ArticleSimulation RF takes over ten hours
Hello, I am working in a simulation of a microwave dryer in the RF module of COMSOL 5.3a, I made the geometry in solidworks and then imported to the comsol. The model is a box with the material inside...
View ArticleGetting same Result when scaling up geometry?
If we scale up the geometry, how the input parameter should be changed so that we get the same result? In my case I am applying voltage using Electric Current Module(ec) and getting some result. I want...
View ArticleThermal Simulation Package Simple Model
Hello there all,I am currently doing a simple thermal simulation to see the heat profile of an IC package.Creating a detailed package model would be time consuming so I created a block model to mimic...
View ArticleFailed To Save Model. The File 'aa.Mph' Is Locked By Another Program.
The below post is related to an archived discussion[start here] After the call from Matlab (when 'COMSOL with matlab' is open, and this model is also saved in workspace.), I failed to save the model,...
View ArticleCOMSOL with MATLAB leaking memory
Hi everyone,I'm having memory issues when using COMSOL LiveLink for MATLAB. Essentially I'm solving the same simulation with varying parameters in a for loop while because I'm intrested in some...
View ArticleConvergence issues for laminar flow and heat transfer
Hi,I briefly explain the problem I'm trying to solve: I want to evaluate the transient heat transfer between a finned tube (with water flowing inside it) covered by a layer of PCM. I perform the study...
View ArticleEnquiry about the Journal Bearing Tutorial (Application ID: 8562)
For the journal bearing tutorial (Application ID: 8562) which I have attahced below, at the Model Definition part, it states that there are two parts of the journal bearing: channel base and solid...
View ArticlePacked bed geometry from .xyz file
Dear all,I'm a Chemical Engineer PhD student and I'm trying to perform CFD simulations in comsol throughout a previous calculated Monte Carlo geometry represented by an .xyz file. This geometry file...
View ArticleTo get information about an input file.
Hello everone,I am looking for a COMSOL file which has element number, element type, boundary conditions, Loading conditions written in it. I want to use that file and want to modify the boundary...
View ArticleModeling a MOSFET in 3D
Hi all,I'm trying to use the MOSFET from the COMSOL MOS transistor tutorial as a component in my model, but I'm running into a recurring issue when trying to convert the tutorial model which is in 2D...
View ArticleBlood perfusion in Cryotherapy simulation
Hi all, I'm trying to simulate cryotherapy in tissue and I need to solve bioheat equation, accounting for the blood perfusion, and also add a term to that to account for the phase change. In order to...
View ArticleExporting actual values of "Effective mode index" in parametric sweep
Hi,I am simulating a simple structure for different dimensions by “Mode Analysis” to study the effects of changes in the dimensions on the e-field and other expressions. When I try to evaluate e-field...
View ArticleMoving Edge Load
Was trying to simulate an edge load (line load) which moves down through the surface of a vertical plate. Was checking out multiple examples with moving point source and all, confused in moving a line...
View ArticleUndefined variable. - Variable: freq
Hello everyone,I am getting this error while using "electromagnetic freuency domain' and 'bioheat transfer" module in comsol.Undefined variable. - Variable: freq - Geometry: geom1 - Domain: 7 Failed to...
View ArticleFailure by building a mesh of 3D imported geometry
Hello,I have a problem with an imported 3D Femur geometry from STL file (before importing the file I chose a 0.01 Defect removal factor). Converting to solid was already successful, but the problem is...
View ArticleAverage of "Coefficient Form Boundary PDE" value
Hi all,There are two coupled physics in my problem. I've used Coefficient Form Boundary PDE for finding the value of a variable in a boundary (call it P), and I need to use its average to solve the...
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