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 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 ArticleElectrified fluid...
Hello, I am just getting started with Comsol (4.1) and am attempting to model the shape of a fluid droplet as it is deformed by an externally applied electric field (i.e: electrospray). So far I have...
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 ArticleImporting an image and creating a parametric surface
Hello fellow Comsolers... It's been a while since I have been on here, but I am back! I am having quite a basic problem with creating a parametric surface from an image. I create a global definition...
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 ArticleFace and edge selection broken in 4.3/4.3a on NVidia/OpenGL
Continued from other thread:www.comsol.com/community/forums/general/thread/32259/ The other thread was marked as "Solved", but it's not solved (using software rendering is not a sufficient workaround),...
View ArticleSurface tension effects on a free boundary
Dear all, In COMSOL website, there is a model for "Square Droplet Oscillations under Surface Tension". In this model, instead of two phase flow modeling, ALE and single phase flow have been combined,...
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 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 ArticleCurrent Density
Can anyone tell me, why the currenty density is quoted in A and not in A/m^2? I have a sphere with several layers. Each is made of different material. After I've computed the electric currents, I...
View ArticleHelicoidal geometry
Hi everybody, I would like to know how to create an helix along a cone surface (3D)? I want an helix determinated according to the cone shape. Thanks
View ArticleStructure with 2D and a 1D truss...
Hello all, I am trying to implement this (see attachment). I guess it should be relatively easy, and for sure lots of people know how to do it :). After "spending" quite a lot of time, I decide to...
View ArticleHow to know a material's parameter value
Hi people, i have a newbie question: in my heat transfer simulation i'm using a wood block (kingwood of Comsol material database). If i look the parameters, the value of density rho is not indicated:...
View ArticleHow to install Livelink for Excel?
Hello, I have license for Livelink for Excel and want to use it. I checked with te documentation and there are a lot of chapters starting with "With Livelink for Excel installed, you can do this and...
View ArticleFail to simulate 2 physics together
Hello, I am trying to simulate a model which has both solid mechanics and magnetic field modules. I can simulate two physics seperately, but every time they are connected, an error returns: Segregated...
View ArticleSubsonic Ramjet Model
I am attempting to optimize the design of a ramjet to be created for rocket experimentation. I have been working on the model for the fall semester attempting to refine it. I am now using a 2d axis...
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