Setting up simple optimization problem2
Hi, I'm trying to set up a simple optimization problem. I have a half sphere at the limit between two distinct elastic layers. I have first run my model using a successful parametric sweep to find the...
View ArticleLaser heating of Sphere
I'm currently attempting to model a spherical object that is being heated by a laser. I have defined the laser using a gaussian pulse with the function for the heat flux being: plaser*gp1(x)*gp1(y)...
View ArticleCombining different variables into one
Hello all, i am quite new in the COMSOL world so i dont know all the possibilities that go with it and i would like to know if somebody can tell me how to combine expressions for different time steps...
View ArticleProblem with interpolation function and variable
Hi ! I'm a beginner in COMSOL 4.2a and I'm trying to simulate a model using the Microwave Heating interface. I have to consider the temperature dependance for the thermal conductivity and the...
View ArticleAnisotropic Diffusion
Hi, I have a 2D geometry in which I want to define anisotropic diffusion. When I select this option in the menu and solve the problem I get weird results. When I check again the options, 'anisotropic...
View Articleheat transfer and laminar flow
Hi I am trying to model the flow of liquid metal(Al-Si alloy) inside casting die and the eventual solidified product at the end of the die. I am not sure whether to use conjugate heat transfer here....
View ArticleWhat is the motivation of new Nonlinear Structural Materials Modele in Comsol...
In my opinion Comsol Multyphysics was a tool for all. However, I am disappointed by the new Nonlinear Structural Materials Module. Since in earlier versions, comsol had already nonlinear material...
View Articlevolumetric shrinkage
Dear all, I have a question regarding the setting of initial volumetric shrinkage rate of a geometry. I want to simulate the polymerization process, during which volumetric shrinkage happens when...
View Articleweird deformation of ultra thin plate under thermal expansion
Hi, everyone, I am using the structural mechanical module to simulate the deformation of a ultra thin plate under the temperature change. the plate size is: length 100mm, width 5mm, height 0.1mm, the...
View ArticleHow To Create Cross Section In 3D
I have been simulating Mie scattering in 3D by using symmetry so that only 1/4 of my model has to be solved for. The problem I have is that I would like to plot the solutions of the full model with 1/4...
View ArticleComsol does not finish the calculation even though convergence criteria is...
Hi, I have a rather strange problem with COMOL and hope that anyone can help me. I am trying to solve a "free and porous media flow" on a 3d geometry. The calculation is not converging very well but it...
View ArticleConvergence in two-way coupled mass transfer
Dear all, I am trying to solve the concentration profile in a multiscale non-steady state two-way couple mass transfer problem (specifically, an extractor). This is as follows: Concentration at the bed...
View ArticleSimple export/point graph question
Hi guys, I'm working on a simulation of an electrochemical cell (simple 1D geometry with one end grounded and the other set to a bias voltage), and I'd like to export the data pertaining to the...
View ArticleUsing 3D model data as input for 2D model
Hi Everyone! I have a 3D model with coupled flow and electro-chemistry equations. The equations are weakly coupled, so I know from previous experience that I can run the flow and electro-chemistry...
View ArticleDifferent results of Simulation from Solid Mechanics and shell
Hello, I have a problem when doing a simulation with a bend pipe meshed by shell element. The results of principal strains are one time larger than meshed by solid mechanics. But the results of...
View Articleelectrode - voltage response to remote current
Hello, I am trying to do a test on a probe with some electrodes in it. I am trying to have a current at a point 100 um away from the probe and record the voltage at the electrode. I have built the...
View Articleelectrode - voltage response to remote current
Hello, I am trying to do a test on a probe with some electrodes in it. I am trying to have a current at a point 100 um away from the probe and record the voltage at the electrode. I have built the...
View Articleelectrode - voltage response to remote current
Hello, I am trying to do a test on a probe with some electrodes in it. I am trying to have a current at a point 100 um away from the probe and record the voltage at the electrode. I have built the...
View ArticleFrequency Response Analysis
Good Evening, In my simulations I'd like to excite my object with a known force throughout a certain frequency range then have a FRF Graph of it with Frequency on the x axis and the Acceleration/Force...
View ArticleAdd a specific rectangular surface as data set for post-process inside 3D...
Hello all, Currently I am trying to add a rectangular surface as a data set inside my 3D geometry for the post-analysis. The four vertex of my rectangular surface has coordinate (x,y,z) provided as...
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