mixing two laminar flows of different fluids in the same chamber
Dear all, I am trying to mix two laminar flows of different fluids within the same chamber in a very simple geometry. In particular, I have two “inlet pipes” converging into a common chamber with an...
View ArticleAcoutics Module
I am trying to model a sound source (speaker, just a "power point source" now) in a sphere and prove that the sound is concetrated in the center of the sphere. Then I want to add sound treatment to the...
View ArticleComsol Import Module Troubleshooting
Recently I had the IT department set up a single floating license of the Comsol Import Module for my university and I'm having difficulty accessing it. When trying to import .igs or .step files into...
View ArticleClik here to view.
which coupling operator to use?
Hi, I have the field for two different fibers with slightly different geometries (lets call them E1 and E2). Now I want to calculate the integral: where A is the area of both fibers. I was oriented by...
View ArticleAdvanced study of COMSOL
After reviewing the references like user guide of COMSOL multiphysics and CFD module I am quite comfortable with the interface and general simulation running. However it is still challenging when the...
View ArticleOpen boundary condition
Hi everyone, I have a duct which opens to a LARGE VOLUME. To model the flow inside the DUCT, I am specifying an unsteady inlet velocity. At exit of the duct, pressure is not known and the pressure...
View Articleelectric field and potential distribution
Hi I have been working on a 3D (AC/DC) model of a insulator, and I am trying to verify the uniform potential and field distribution along the insulator surface. I apply 33Kv voltage at HV end and other...
View ArticleTime dependent alternating temperature/thermal insulation boundary conditions
Hi all, I am trying to setup alternating boundary conditions for a certain boundary based on the hours of each day. My model will run for about 2 months, and I would like to set the boundary condition...
View ArticleMulti-linear isotropic hardening
Hi! I'm working on a thermo-mechanical model (including plasticity) and I am defining a hardening function by an interpolation function because I have the stress-strain curve. The problem is that I...
View ArticleAFM or indnetation simulation
Hello, I want a step by step way of simulation a nanoindenation experiment or indnetation by AFM using Comsol. I appreciate any help... Raed
View ArticleTime marching nonlinear equation by applying a modified Newton algorithm.
Hi, I am using a time dependent temperature function boundary condition for rectangle left side heated wall and would like to solved this problem by time marching implicit scheme, nonlinear system of...
View ArticleTime-dependent Heat Transfer study - strange periodicity
Dear COMSOL users, I'm modelling a (reasonably simple) geometry in which I have a pulsed heat source with a period of 3 minutes (1 minute the source is on and 2 it is off). The geometry is a cylinder...
View ArticleHeat transfer in three blocks
Hello. I have side-by-side three blocks of three difference materials. I want to explore the heat transfer in these blocks when applying a temperature on the surface between the first and second walls....
View ArticleMoving Laser Heating
Hi, I am Trying to simulate a Laser heating of block of steel, the laser moves in a 80 mm straight path. my Problem is, the Temperature is almost steady along the path , for example 200°C [+5,-5], but...
View Articledrying process
Hello user's COMSOL I am trying to simulate a simple drying process with COMSOL , but I have been unable to link heat and mass transfer processes together. With the program, I want to model a porous...
View ArticleCOMSOL Video Player of Displacements (Solid Mechanics Module).
Hello All, I'm new to COMSOL, and I am doing a simulation in which I have a droplet modeled as a rigid body on an truck radiator fin (aluminum) surface. The ultimate goal of the study is to study the...
View Articleheat transfer in non linear system by using time dependent temperature function
Hi, I am solving a heat transfer non linear problem in COMSOL v3.5a. The problem is a rectangle geometry in which a left side heated with time dependent temperature function when time is zero at...
View ArticleVisuals of Magnetic Fields around a cylindrical rod (A Beginner's Question)
This is quite a simple projec I know, and I apologize in advanced for taking away any space that might have been used for a more pressing question. To be quick, I'm working with a professor and he's...
View ArticleWall Condition in Fluid Particle Tracking (fpt) Module
It seems as though the instructions in the COMSOL User's Manual (v4.3) may disagree with the logic in the fluid particle tracking module for the wall condition specification. Before I submit it...
View ArticleHelp needed: magnetostatic force calculation using Maxwell stress tensor
This problem has been bothering me for weeks. I read previous posts on this forum on topic of Maxwell stress tensor but still could not find what is wrong. I'm trying to calculate the repelling force...
View Article