More verbosity from errors
Hello im pretty new in COMSOL and Im having problems settting up a model. Working with turbulent flow + reacting flow I have the error Problem setting up multigrid Analysis x has no mesh defined for...
View Articlequestion about the memory
Hi to everyone, I would like to ask a question about the memory of comsol 4.3. When it formulates the mathematical problem comsol needs to construct some matrices which will result to one or two...
View ArticleProblems solving all physics
Hello! I'm trying to solve a problem involving fluids, electrostatics and transport of diluted species. When I launch the solver everithing seems fine. But when finishes just electrostatics or Laminar...
View Articleprobleme in imposing current, and measuring resistance
Hello I am a beginner in comsol and I want to calculate by geometry factor using the AC / DC module, of a cylinder with 70mm diameter and 20mm height. This cylinder contains eight electrodes (similar...
View Articlebringing B-spline surfaces into COMSOL
I have used MATLAB to define a series of B-spline parametric surfaces that I wish to knit together to a solid object in COMSOL. My current approach for bringing these into COMSOL is to create a...
View ArticleAre all post-processing function only using single CPU core?
Hi all, I'm doing 3D eigenvalue simulations. I noticed that I can used pardiso direct solver to take advantage of multi-core CPUs. However, when I went to the point of post-processing, e.g. exporting...
View Articletic/toc in matlab for COMSOL
I have a model inside a for loop and occasionally it runs into an extreme parameter value and I want to just skip that iteration. I tried increasing the interations a lot and then saying skip the...
View Articlei m new to comsol 4.2 so if any one could help me in the micro beam resistor
about microresistor beam
View ArticleSimulation of a sollar collector
Hi everyone I'm a French engineering student and I need to simulate a solar collector in COMSOL multiphysics. I build the panel with glass, air gap, copper, water and insulation but I have a problem...
View ArticleDISPERSION Modeling
Hi frndz! I am working on a model of the dispersion of gases which i have uploaded here. It is time depended modeling and In stationary case there is no error but when i Run for TIME depended case i...
View ArticleCopper Deposition in a Trench - Simulating the closure of the trench...
I need to simulate the closure of the trench for the example provided in the Electrodeposition Module as a tutorial model: Copper Deposition in a Trench. Attached you can find what happens after 14...
View ArticleSimulation error
Hi , I am getting this type of error whey i am trying to start simulation. "Variables property does not include all variables in Xmesh" Could anybody can give me any solution/ suggestion. Thank you...
View ArticleRotation
Hello, I am trying to allow the remanent flux density within a magneto-active elastomer (MAE) to rotate with the elastomer as a magnetic field is applied to the material. Within the ampere's law that...
View ArticleUse of lower limit in segregated step
Hello Im solving a coupled problem that has turbulent flow and reaction, to certain values I obtain negative values for concentration, but I see there is a lower limit after calculation of ep and k...
View ArticleLaminar-Two-Phase-Flow - Filling of a Pot
Hi, I've done a lot of simulations with comsol 4.3 and they worked. My modell is a pot which is filled with water.I'm using the laminar two phase flow in 2D with the phases water and air. i have two...
View Articlecomsol's algorithm for determining number of domains
I am running COMSOL w/ Matlab for an optimization of a geometry and need to be able to know the number of domains formed by 4 curves. The problem is stated as: I need an algorithm to determine how many...
View Articleabout the steady and unsteady simulations
Dear Sir or Madam, I meet some problems about the simulations of fluid flow in channels. When you do some simulations related to fluid flow, how do you judge whether it is a steady issue or not? For...
View ArticleExporting Comsol data to Matlab?
Hello everybody, I want to postprocess Comsol data in Matlab. Since Ascii files blow up in size and I get "out of memory error", I'm looking for some other way. I've no experience with Comsol-Matlab...
View Articlesimulation of solidification or crystallization using Phase-field method?
I didn't find examples in the model libraries that can be referd to. Does anyone can recommend some references to me to read about how to simulate solidification using the phase-field method in COMSOL?...
View Article3d induction heating model
I am new user of comsol and I am simulating the 3d induction heating . I was reffering to the the examples in model library. I reffered to the 3d eddy currents and induction heating of copper cylinder...
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