How to simulate a thermal pressure sensor
Hi there, I'm trying to simulate a MEMS PIRANI sensor in comsol and got stuck for a long time. Here is a brief introduction about what I want to do: If the pressure of a confined tiny chamber which has...
View ArticleElectron energy in DC Discharge Plasma
Hej, I am working with the DC discharge Plasma interface. In my plasma model electrons are produced due the decay of tritium (T=>e+T+), in the real plasma case the main part of the electrons are...
View ArticlePlots - Edit Expressions: Normalization to a Certain Value
I have a square, centered in (0,0). After running my simulation, I get the value of the Magnetic Field all over the square. I run a Parametric Sweep. In order to compare my results, I want to plot the...
View ArticleTiO2 Absorption Spectra
Hi. I am studying the plasmonic effects of gold nanoparticles on a substrate (TiO2) and have successfully used the Scatterer on Substrate model to do this. I am able to produce an absorption spectrum...
View ArticleReactive transport of two species
Hi, I have two streams of water flow into the same conduit under laminar conditions where they mix by diffusion. Flow is from left to right and compound A enters at the top half, whereas B enters along...
View ArticleAre there any known issues with COMSOL 4.4 running in virtual machines?
While trying to solve a simple heat transfer problem with COMSOL 4.4 in a virtual machine I noticed 9 minutes were needed to find a solution. While trying to solve the same problem (exactly the same...
View ArticlePiezoelectric sensor
I am trying to model a sensor made using a cylindrically polarized ring of PZT, using the acoustics module. I am applying a background pressure field and want to measure the voltage produced on the...
View ArticleFluid flow and heat transfer in heat exchanger
Dear All, I am solving a conduction- convection heat transfer problem with 2 dimensional in shell and tube heat exchanger. Problem Description are as: The size of inner radius of tube is 6mm. and outer...
View ArticleUsing several time studies
Dear Comsol users, I want to use for Comsol for time-depended simulation. And the time-dynamics of the systems, that I expect, is, that there should be first an initial phase with a slow increase of...
View ArticleMetamaterial Simulation
Hi, I'm currently attempting to recreate the results of a metamaterial simulation. The main article can be found here: pre.aps.org/pdf/PRE/v76/i2/e026606 There is also another presentation that shows...
View ArticleSymmetry in heat transfer with surface to surface radiation
Hi Comsol Users, I'm working on a 3D model with heat transfer and surface to surface radiation, in which I make use of symmetry and calculate only one quarter of the problem. So I choose symmetry and...
View ArticleElectrostatics + Metal Electrode
Hello I'm completely new to comsol. I'm trying to simulate the electric field between some specifically arranged metal electrodes. Between them is some material with a certain permittivity. Now I get...
View ArticleFabry-Perot microwave resonator modes
Hi, I'm trying to build a model of a cylindrical microwave cavity resonator with spherical mirrors. I'm new to COMSOL so I think there is something basic I am missing but when I try to compute the...
View ArticleCPW with Resonator
Dear Community, I've been trying to set up a model of CPW with a split-ring resonator (SRR) for quite a while now. Sadly, without much success. I've also tried to alter a couple of the related problems...
View ArticleTwo phase- Fluids interacting despite Fluid Fluid interface
Hi All, I have been trying two phase moving mesh model, I want to know the options of separating two fluids and having a fluid fluid interface for surface tension studies. However the two fluids seem...
View ArticleLaminar flow inside imported mesh
Hi All, I have been trying very hard over the last few days, but to no avail. I have a 3D CT scan data of a porous material, inside which I want to simulate air flow. I have the CT scan data in .tif...
View ArticleRunning slab waveguide program with large dimensions
I have a slab waveguide and want to investigate waveguiding through it. I run the model on the wave optics module, frequency domain method. The slab is defined as a polymer material with dipoles...
View ArticleFlow value over a defined surface area
Hello, I would like to ask you about a help with postprocessing. I have a simple 3D model (for example cube) where inlet, outlet and fluid material is defined, mesh is generated and laminar flow...
View Articleadding results after parametric sweep
Hello everyone, I have a question regarding summing up results while running a calculation with parametric speep. Here is what I want to do: 1. solve the rf module calculation where I get E-field in a...
View ArticleSimulate an electrode
Hi, can someone please explain to me how I can simulate an electrode. I want to simulate a piece of piezoelectric that is grounded on one side, and has an electrode to measure the electric potential...
View Article