Trouble with Livelink-tutorial
Hello, I am trying to set up the busbar example taken from the 'Introduction to LiveLink for MATLAB'-PDF. I am using Ubuntu 12.04, MATLAB 2013a and COMSOL 4.3a. I am able to proceed until mphgeom() is...
View Articlesimple tissue ablation model
Hey all, Im trying to set up a very simple ablation model of cardiac trouble and am having trouble the model is a simple 2D axisymmetric geom consisting of a square with a small rectangular electrode...
View ArticleCopper Electrodeposition in a Trench
I tried to extend the Copper Electrodeposition example in COMSOL, but I obtained "inverted mesh elements" and, hence, graphical artiphacts at larger times (> 14 secs used in the original model). You...
View Articledielectric shielding
Dear all, I want to add a dielectric around a wire (A=0.1*0.1cm2). I go through COMSOL version 4.1 user guide and I found out that there is Dielectric part in Electric Current node. But I could not...
View ArticleMulti Turn Coil - reverse field
Hi, I am building a Beam-Line simulation using COMSOL 4.3.0.151, using a geometry imported from a CAD file constructed by my engineer. 1st step is to assemble the magnetic optics, for which i imported...
View ArticleThe wake of a ship simulation
Hellow Everyone, I'm a really noob beginner in COMSOL.. and I've been struggling with this (a priori great) software for 3 days to create a flow around a boat (or a random floating object). My study...
View Articleabout heater simulation in the room
Hello! I am use comsol 4.3a , and use the non-isothermal flow physics to simulate the heater in the room. And the room has a door , and I want to set the door is open, and it is connect to the...
View ArticleHeat source: Temperature profile instead of heat
Hi, I want to use measured values to define a heat source in the "Conjugate Heat Transfer". I could already generate a 3D-function of these values which can be used as Q. But my problem is that the...
View Articleproblem with 2d force calculation in rf module
hi, i am a neophyte.. i am trying to simulate the force on a dielectric particle by Maxwell stress tensor method.. but i stuck at the very beginning.. The problem is that I have to define an electric...
View ArticleModify a surface
Hi I have just started to use COMSOL. I want to modify my surface of rectangle. I could import text file to interpolate data points. But how could I replace one of the edges by the interpolated line?...
View Articlemagnetic and electric field between two plates, with RF frequency
Dear Sir/Madam, I searched through forum and cannot find the answer to my question. I am trying to simulate electric and magnetic field between two copper parallel plates (2D axial symmetry)....
View Articlestrain dependence of relative permittivity in semiconductors
Hi, I've used the structural mechanics module for quite some time to calculate the strain state of Germanium nanostructures on Silicon substrates. A new task now is to calculate the capacity of such a...
View ArticleDC discharge dc.de_4
Hi, I am starting to use the plasma module and I am currently having a look at the DC discharge example (www.comsol.com/showroom/documentation/model/8640/). During the model set up the value of the...
View Articlescattering nanoparticle cross section
Hello Sorry my English is not perfect. I have to make a simulation of a gold nanoparticle (R = 20nm) hit by a plane wave. I have to get a chart: x-axis - wavelength (200nm-800nm) or frequency y-axis...
View ArticleCreate geometry from a matrix
Hi everyone, I am trying to create a geometry with Comsol 4.3 with Matlab 2012. The geometry I want to create is very complex. The geometry is defined by a matrix (the value 1 corresponding to the...
View ArticlePossible to export the streamline coordinates?
Hi, I am only using the laminar flow conditions, I have plotted the streamline after the simulation, is there anyway to get the streamline coordinate from the simulation? I like to export it if it is...
View ArticleLivelink for Matlab material definition issue
Hello, My problem is the following: I am defining a RF model: [...] model.physics().create('rfw1', 'ElectromagneticWaves', 'geom1'); model.study().create('study1'); s1 = model.study('study1');...
View ArticleCreep - Plasticity
I want to use the non-linear structural mechanics module for simulation of plastic deformation by yielding. There is a creep module and a plasticity module. In the creep module, I find more suitable...
View Articlehow to assign conductivity to fluid flow in a microchannel preconcentration...
I am modeling a solution phase preconcentration in microchannel. My system has two inlets and one outlet. From inlet1, buffer (10mM) containing a negatively charged dye is supplied and from inlet2 same...
View Articlemagnetic concentrator
Hello, I work on a cold crucible for the fusion of silicon with a coil around (around 10 kHz). I have done a 3D model of the crucible to know the efficiency of the crucible (how power is transmetted to...
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