Error "No such file or directory" when trying to solve a model via "comsol...
Hi Comsol Community,this is my first post on this forum, any feedback on how to better explain my request is very welcome :).I am running Comsol Multiphysics 5.4 on a remote machine via an SSH client;...
View ArticleReacting Flow in Porous Media Solution Error
I am trying to simulate the various aspects in 4 different studies: 1. Bulk flow through porous media (Brinkman Eq. - Stationary) 2. Particle Tracing (fpt - Using Study 1) 3. Constant concentration...
View ArticleIs that possible to group geometries just like group Definitions or parameters?
As I'm working to model a bridge system with all possible details. I got so many geometries (solids, edge, shell, etc) and it's a messy to organize or follow. Is there a way to categorize the...
View ArticlePARDISO vs MUMPS issue
I can solve a system of time-dependent, General Form PDEs using MUMPS as a direct solver on an interval [0,T] where T>0 is given. The adaptive timestep decreases in the course of the solving process...
View Article-recovery bash: mpiexec.exe: command not found
Hello,I am new to the remote cluster computing. After setting up all the connections, I am trying to submit and run my first job on the school's supercomputer. But I got the error said below. Could you...
View ArticleReactive pellet Bed
Hi,I need to use the concentration inside the pellet to define a new function in variable list (out of the reactive pellet bed feature). The problem is that COMSOL knows the variable "tds.rpb1.cpe_X"...
View ArticleExporting the Image for PCB construction
I made and simulated an RF microstrip model. Now I need to get a printout to construct it. But I couldn't find a good solution to print it in real dimensions on a paper.For this kind of problems in...
View ArticleWrinkling and Core Crushing Failure for Sandwich Composite
I have been trying to simulate wrinkling and core failure under compressive loading and 3-point/4-point bending conditions. I guess, failed because of boundary conditions every time. Maybe anyone wants...
View ArticleResistance too high using frequency domain
Hi, I am new in Comsol and I am trying to realize a model of a common mode choke. My problem is that during the frequency study in order to calculate the losses of the ferromagnetic core I find a...
View ArticleThe difference between ‘Insulation’ and ‘Electron Outlet’
Hi allI have a fairly easy question about "drift-diffusion" physics in Plasma module. There are two types of settings for boundaries: "Electron outlet" and "Insulation". In the "Equation" for both of...
View ArticleBinary Mixture Adsorption
Is there anyone who is working on Binary Mixture Adsorption using Comsol 5.3a?
View Articlestudy update solution
hi....! i model a copper conductor in soil material and pass a current from that conductor. and took mag.flux density graph after taking derivative method. Now i want to change conductivity. so i...
View ArticleStudying E-field of two semi-infinite regions
I'm fairly new to Comsol, and would like some suggestions in setting up a simulation. I want to study the a particular structure (see attachment). Specifically, I want to know the E-field pattern along...
View ArticleInlet and Outlet Conditions for Concentration Profile Over Time
Hi, I have a little familiarity with COMSOL but, I suspect that what I'm trying to do is more advanced. I'm trying to model concentration depletion over time. My model is 2D with water flowing around a...
View ArticleElectromagnetic Singular Matrix Error
Whenever I run the 2D simulation below for a tapered fiber coupled to a rectangular waveguide, I end up with an error that says "Detail: There are 1 void equations (empty rows in matrix) for the...
View ArticleWarning: Low minimum element quality
Hello everyone,I am having a problem getting accurate end results In my solutions. Whenever I Compute my program I just get zeros across the board for all solutions. I keep getting a warning signal...
View ArticlePostprocessing in structural mechanics
Hi, I am a newcomer in comsol. I am doing a cylinder compression test,These are some of the problems I have encountered, and I would be grateful if they were solved.How to draw a curve between any two...
View ArticleClosed circuit flow using an interior fan (for a thermal energy storage design)
The below post is related to an archived discussionHello,I am currently working on the design of a thermal energy storage, and I would like to study convection and conduction in a closed-circuit flow,...
View ArticleEvaporation flux in a porous media
Hi everyone,I am new to Comsol and I am studying the process of drying of a bed of tea leaves, considering them as a porous media. I came across the Comsol model Evaporation in Porous Media with Large...
View ArticleError: No filename given
The below post is related to an archived discussion[start here]A model that previously worked now reads the error: " Feature: Compile Equations: Time Dependent (sol1/st1) Error in multiphysics...
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