bulk concentration
Hi I am working with a 2D axisymmetric geometry of the arterial wall. I am solving transport of diluted species (time dependent). I would like to compute and represent the partitioning coefficient (k),...
View ArticleMesh : resolving a part much thinner than the rest of the volumes
Hi, I don't know much about the different options for meshes and their mechanism of creation. I am studying a geometry where the is a layer much thinner than the rest of the geometry. 1cm becomes 1...
View ArticleSelective electric field Convergence at Chi3 contribution
Hi, I am looking for convergence of electric field distribution in a 3D tri-layer metal-dielectric system with the metal and dielectric material's electric susceptibility (chi3) contributions at...
View ArticleIs it possible to model MAGNETOSTRICTIVE materials in comsol, just like for...
Dear colleagues, In comsol, there are predefined models for the piezoelectric materials. For magnetostrictive materials, they have similar properties as the piezoelectric counterparts. However, a...
View Articlehow to Convert semilog graph to a normal graph ?
Hi all , I am simulating BAW Resonator. I have made my model, based on the PDF instructions that comes along with the model. But, I am getting a Semilog curve for the Quality factor ( Please find...
View ArticleModelling magnetic field excited by AC current
Hi all, I am now simulating the magnetic field excited by AC current. I want to observe the skin effect (a plot of current density against depth) and the time variance magnetic field (a plot of...
View ArticlePiezoresistive Beam
Does anyone here uses Piezoresitive module for modeling a piezoresistive beam? Or has any example which s/he can send for me? I am really confused about the results and I need to take a look at one...
View ArticleElectrostatic and transport of diluted species coupling to an IPMC sensor model
Dear community, I am trying to build a simulation of an Ionic Polymer Metal Composite (IPMC) strip sensor, a thin membrane of polymer ionic on witch too thin gold electrodes are plated. It is a 2D time...
View ArticleIncompressiblity in Fluid Flow
I am trying to model the flow in a tube where on either side of the tube there is a sinusoidal pressure being applied and in the middle on the side of the tube there is an outlet where the pressure is...
View Articletransformer simulation with AC/DC, HEAT TRANSFER
Hi everyone, I would like to simulate a three phase transformer in 3D with more module in the same time. The aim of my model is seeing the effect of the magnetic field (eddy current, leakage flux) for...
View ArticleDifferent Solution when "Non-Relevant" Parameter is Changed in 3D (but not in...
Hi all First of, thanks in advance for reading and hopefully reply to this thread. The main problem is, that when I change a parameter in a 2D simulation, the results do not alter and that's how it's...
View Articledefining integral in comsol
Hello, I'm new to Comsol. I'm using the electrostatics module to solve for the potential and electric field. Then I want to define a variable P which is an integral of a function dependent on the...
View ArticleInner and outer solution
Hi, I made a parametric sweep in combination with a terminal sweep using the Electrostatic interface. What is the difference/definition of the inner and outer solution in COMSOL which is found in the...
View ArticleModeling Boltzmann Transport equation in COMSOL using coefficient form of PDE
Hi, I am modeling Phonon transport using Boltzmann transport equation. Referring: a. www.comsol.com/paper/nanoscale...tzmann-transport-equation-6408 b....
View ArticleRequest for basic help
Hello everyone, I'm very new to comsol and am looking for some help with a capacitor simulation. Right now I have 2 parallel plates and a charged sphere simulated. I need the plates to not move and to...
View ArticleTubular permanent magnet motor modeling
I just took a look at a new model in the application gallery, called "Tubular Permanent Magnet Generator":www.comsol.com/model/tubular-p...rmanent-magnet-generator-20381 In the case of the generator, I...
View ArticleMicro Thermoelectric Generator and circuit.
Hello I have designed a Micro Thermoelectric Generator (μTEG) and now I want to connect it to a simple circuit with only a resistance load (RL) to know the power disipated by this resistance. I think I...
View ArticleCombination of Moving Mesh and Laminar Flow interfaces
My model consists of a bellow which goes up and down periodically with a square function, and, by that, it moves a fluid which is inside. I'm trying to attach both interfaces by setting the mesh...
View ArticleHow to specify a particle distribution in particle tracing.
i wish to simulate a particle tracing in a fracture. i can do this programmaticly with fortran. i want a lognormal distribution of particle diameter. so when i start the simulation at time=0 a...
View ArticleAccess eigenfrequencies
Hi, I want to optimize a given geometry, so that the difference between the two lowest eigenfrequencies is minimized. How do I access the different eigenfrequencies solutions in the optimization...
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