Copper 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 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 ArticleAC field Simulation
Hi, I have to do a simple Simulation in comsol multiphysics 4.1 and i am just a beginner in this work,i have to build an electrode geometry and apply various frequency and voltage ac signals and see...
View ArticleDielectrophoresis simulations or gradient of electric field
Hi, I am doing dielectrophoresis simulations using simulations. Basically I use AC/DC module -conductive medium DC to get the electric field distribution. But I face some problems geting gradient of...
View ArticleAC current induced oscillations of electrothermal actuator driven by the...
Hello everybody, I'm trying to simulate a resonance mode oscillations of bimorph electrothermal actuator driven by Joule heating through AC current. So far I've been trying to realize it through...
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 ArticleMagnetic field
Does anybody know how to write this expression on comsol ( ∇/B/^2 )? I meant expression that replace "the gradient of the magnetic field norm square". 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 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 ArticleMerging 2 models
I have a Comsol Model of a Maxwell Coil and a model of Helmhotlz coil with defined geometries. Now I want to make a simulation in which I can place these 2 coils together and simulate their magnetic...
View Articlelaminar flow in a tube under oscillating force
hello everybody, Im modeling a pipe that with laminar flow inside and that is subjected to oscillating force. I want to see the fluid's influence on the pipe when vibration. This is a very simplified...
View ArticleLocal Edge System
Hello, I'm trying to implement a "Predescribed Displacement" Condition on an Edge using the local Edge Coordinate system. But i have the Problem that i couldn't find a reference to the "Local Edge...
View ArticleUsing Comsol Multiphysics 4.2
Hello, I started using Comsol Multiphysics 4.2 and I draw a complete system. However I realized that I made a mistake on dimensions. How can I do to correct the schema from one side without doing all...
View ArticleNumerical simulation of an air flow in a single tube and in a silencer
Hello, Can you help me to be able to simulate flow in a normal tube then in a silencer. What are the steps to take? Thank you in advance.
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 ArticleUse contour plots as geometric entities
I saw in the release highlight video that in v4.3a that you can use contour plots as geometric entities. How do you do this?
View ArticleHow to turn bézier curves into surface
Hi, is it possible to turn a bézier curve into a surface which can be extruded? Thank you for your help. Sandra
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