Polarization rotation angle
Dear all, I am currently working on my bachelor project, which involves the numerical analysis of the feature of Metamaterials which can rotate the polarization angle of a linear polarized light that...
View ArticleTorsion of a material with magnetic properties
Good Morning, I am a beginner with Comsol and I am working on AC/DC Module (magnetic field). I added a picture, where you can see two coils and a wire. In both there is current and around the wire...
View ArticlePiezoelectric
Hi every one i am using Piezoelectric devices module to study the effect of stress on a piezoelectric material but i have a problem. an error occured when adding electric circuit eith resistor to load...
View ArticleSimple Question for Flow Rate
Hello, I already done a few simulations with "laminar flow" using time dependent with rectangular input. Input was "pressure, no viscous stress". Is there any ways of getting the flow rate from...
View ArticleFlow rate calculation - 2D model - FSI
I have a 2D fluid flow model with a flow through a channel with rectangular cross-section. There is one inlet with non-zero inlet pressure and outlet with zero pressure. After solving, in order to...
View ArticleHow to generate Radially polarized light in wave optics module ?
Hello I want to generate radially polarized light in wave optics module. Can anyone help me ?
View ArticleMEMS Stresses and Strains
Hello, I am relatively new to COMSOL and am trying to model a simple deformation of a MEMS bilayer. My geometry consists of a polyimide support (micro-meter dimensions) and a gold layer on top. I am...
View ArticlePlotting results along the curve
Hi, I´m starting with Comsol and I need help. I want to plot results (stress) along the curve (but not line) so, that I have a 2D Graph - stress dependent on the curve. Thank for the help -- sebik
View Articleelectric field distribution in composite materials
Hi if anyone tells, how to build a model for composite materials
View Articlethin film damping in frequency domain
Hi I'm simulating squeeze damping on cantilever. I use solid mechanics model and study in frequency domain perturbation. I add thin film damping and harmonic perturbation boundary load for cantilever,...
View ArticleQn: Chemical reaction engineering module; setting viscosity of individual...
I'm using the Chemical reaction engineering module to model fluid flows with the TCS transport of concentrated species interface. Or the RFCS interface, reacting flow in porous media. I am attempting...
View ArticleHow to enter mix type boundary condition in equation based modelling?
I want to use "u=-du/dx at x=1" and "u=-du/dy at y=1". (d is here for partial diff, sorry about that). How can I enter such type of boundary conditions in equation base modelling interface? Any...
View ArticlePull-in voltage of resonator in 2D - keep getting inverted mesh elements
Hi, I'm trying to find the pull-in voltage of a beam in 2D, essentially exactly as is done in the "Pull-in Voltage for a Biased Resonator-2D" model in the application gallery. The only differences are...
View Articlebackground field & extinction cross section with polarization
Hello. I am a user just started to learn COMSOL. I have some basic questions, which I could not find answer in forum. First, I am simulating particle surrounded in medium in scattered field mode, and...
View ArticleAdd microwave source to microstrip antena
Hello I have a very easy model of microstrip antena (prntscr of model is attached) that i d like testing but i failed on add microwave port on it. I try add Lumped port (in real we have omega shape...
View ArticleHow to simulate hologram in comsol?
Hi all, i want to construct a hologram and want to get the object image in the result. Is it possible in comsol multiphysics? Can anyone suggest me which module should i use? and how would it be...
View ArticleHow to define Robin boundary conditions in a equation based modelling interface?
I want to have these type of boundary conditions, u=-du/dux, at x=1 and u=-a*du/duy, at y=1, where `a` is a parameter. How can I input these conditions? Thanks
View ArticleImplementing BCs for a travelling wave wall in Fsi
Hello, I was a Fluent user till recently, but I needed more to couple multiple physics, still getting used to Comsol. At the moment it's just Fsi. For simplicity sake, I have 4 walls; an Inlet, an...
View ArticleMesh element volume
Dear all, I have a material property having a different value in a domain and it is function of individual volume of deformed mesh element and undeformed mesh element. Could you tell me how to get the...
View Article3D FinFET model
Dear COMSOL users I have been trying to make a simple 3Dimensional FinFet model by using semiconductor module(comsol 5.0). After computing, I am getting the following errors. If you have any idea to...
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