How to do Position Dependent Concentration for TDS in COMSOL?
In COMSOL, I have a flat plate with an irregular surface. Flux of a dilute species is occurring across the irregular surface boundary (in 2D) and I'm looking to define the concentration of the dilute...
View ArticlePipe temperature in the tutorial case of shell-and-tube turbulent flow
Constant wall temperature is applied in the case here (T_pipe=278K): Turbulent Flow Through a Shell-and-Tube Heat Exchanger Cross Section. I am wondering at the steady state why the wall temperature is...
View ArticleCalculate time derivative of a variable that is stored by the Previous Solution
Dear all:I read and followed the BLOG"Using the Previous Solution Operator in Transient Modeling". However, I encountered an issue about this approach when I was trying to calculate the time derivative...
View ArticleNormal and shear stresses visualization after solution
Hello, How can I plot normal and shear stresses (sigma x, sigma y and sigma xy) instead of the automatica plotting of von mises stress?Bikash
View ArticleWater sessile droplet
Hi all,I am new to COMSOL. I am trying to determine the equilibrium shape of the sessile droplet, given the contact angle.Based on the rising bubble example model, I was able to model the shape using...
View Article3D plot with imported data I see a cube not the shape of my geometry
Hi to everyone!I have a problem with imported data in Comsol.I have a csv matrix of this type: x y x E (text.txt) where x,y,z are spatial coordinates and E the electric field in this point (ranging...
View Articlesimulation of a secondary magnetic field around a pipe due to induction of...
Hello,As a newbie in COMSOL, I need to design a model in which, the functionality of Cable Avoidance Tool (CAT) and magnetic field response of a buried metallic pipe can be demonstrated (in the...
View Articlecylindrical ionization chamber
Hello, I am doing one project in designing of gaseous detector. Design of the detector is Cyllindrical ionization chamber for that i have to design simple cyllindrical capacitor kind of structure. In...
View ArticleSimulating a 2D Line-Dipole Antenna
Hello,I want to set-up and simulate a 2D Line-Dipole antenna. The frequency should be 2 GHz and the length is 75 mm and width is 0.3 mm. A linedipole antenna is the time-harmonic equivalent of a pair...
View ArticleDifferent results using Mixture model for 5.4 version and 5.2a version
I am using Mixture to run for lubrication flow in journal bearing with cavitation. It is very interesting that when I used 5.2a version, I can get the correct answer. When I used 5.4 version, the...
View ArticleWhat is the difference between electrostatic field and current field in...
What is the difference between electrostatic field and current field in solving electric field? How to explain this difference
View ArticleHelp in magnetic shield saturation
Hi! I am trying to modeling somthing with magnetic fields, how can I get the saturation effect? I was trying to change in 'Ampers law' the "Constitutive relation" to BH curve but it gives me an erreor...
View Article2D Grid data reading
I am facing error while integrating the .txt file of data in comsol model. My model is working for constant stress (Single stress) data input, but grid data (Multiple stress data) input for the same...
View ArticleImport An Input Stress-Strain Initial State From Abaqus To Comsol
Dear all I was wondering if it would be possible to import the deformed mesh/geometry and an input file with the stress-strain data after a solid mechanics analysis made in ABAQUS to define an initial...
View ArticleNonlinear solver did not converge. Laser Heating of 3D Model
Good afternoon everyone, hope you can help me with my issue.I am trying to determine the maximum temperatures at the surface of a simple rectangular 3D model where the top portion of the model...
View ArticlePN junction simulation
Hi, I have designed a PN jucntion structure (3D) and I would like to simulate this model on COMSOL. This PN junction is applied with a reverse bias voltage and the depletion region width changes...
View ArticleTrying to understand "Arrow Volume" function
Hello! I am currently working on a 3d planar transformer model using the e-core transformer model as a guide, I am new using Comsol. I am in the post results part, and there is something I don't quite...
View ArticleGaussian Pulse laser by Analytic
I followed Laser heating comsol tutorial.But what was the problem, the analytic occurs error like analytic_error.PNG.I used COMSOL 5.0 version program.If it's a version problem, I want to know there is...
View ArticleAcoustic Diffusion Equation
Please May I know which frequency is calculated at band type 'Flat Continuous' ?
View ArticleFinite difference algorithm
I have a value calculated and extracted from COMSOL at each node as well as the nodal coordinate information and I want to find its partial derivative at these points. How does COMSOL calculate these...
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