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Infinite current sheet modeling in comsol
I would like to model an infinite current sheet on xy-plane on Comsol. I want to see the radiated fields in z directionThe current on the sheet will have exponential dependence on y-direction, i.e. Any...
View ArticleNew Method in version 5.3: "Angular Spectrum of Plane Waves" Diffraction...
Hi all,I am currently trying to generate a diffraction limited gaussian beam (full width half max of around 200nm)This is impossible under the paraxial approximation that was used to define Gaussian...
View ArticleSurface integral over 2D slice of ellipsoid
I am trying to take the surface integral on a 2D ellipsoidal slice. These 3D ellipsoids are contained within a cylinder. At first I tried to do a parameterized surface, however when I enter the...
View ArticlePhononic crystal simulation
Hi, I am trying to simulate 2D phononic crystal. But unlike most of the existing problems, I am dealing with cylindrical air inclusion in steel matrix. I am lost about some issues: 1. Should I use...
View ArticleTransmittance Of Grating Coupled SPR
Hey, I am trying to simulate grating coupled transmittance and reflectance SPR effect as a function of incidence angle. Where 50nm gold is deposited on gratings with pitch of 1700 nm and hight of 180...
View ArticleSurface Acoustic Wave Gas Sensor by using BaTio3
How to find the Elasticity matrix,Coupling matrix,Coupling matrix of BaTio3
View Articlemicromechanics of composites
Dear sir, This is dhanunjay, I am doing micromechanics analysis by representative volume element method and periodic boundary conditions for the fiber of circular and elliptical cross-sections. I am...
View Articleaccessing previous time data in time dependent simulation
I am running a time dependent simulation and keeping track of two functions of time call them f1 and f2. I would like to be able to access previous time slices of the function f1 and pass them to f2 in...
View ArticleEnergy factor
I am working on simulations with hyperelastic models with viscoelasticity implemented to simulate biological materials. But there ask for such energy factors and their respective relaxation times, how...
View ArticleHow to quantify pressure of reflection if the planewave radiation or port BC...
Hi,I know in the acoustics module, in background pressure field, acpr.p_s represents the reflection. And is there an equivalent in planewave radiation or port boundary conditions? The reflection that...
View ArticleSurface Current Density Comsol 4.4
Hello,I would like to know what is the difference between induced Current Density (emw.Jix), Surface Current Density (emw.Jsx), and Current Density (emw.Jx).Thanks in advance, Jose Santos.
View ArticleMagnetization constitutive relation in Ampere's Law in Magnetic Field interface
There are several options in magnetic field constitutive relations in Ampere's law domain of Magnetic Fields interface on Comsol 5.4.One of the options is Magnetization, where you can enter manually a...
View ArticleHollow Membrane Fibre Model
Hello,I'am attempting to recreate a hollow membrane fibre model from this link:https://www.comsol.com/video/modeling-co2-removal-with-hollow-fiber-modules-in-comsol-aug-20-2018I was hoping to be able...
View ArticlePlot of an AC voltage
Hi all,I am quite new in Comsol and Im an currently working on a 2 electrode conductivity sensor. An AC voltage of 50 mV rms has to be applied on both electrodes, so without a ground. I tried this with...
View ArticleBuilding mesh at PEM FuelCell(PEMFC)'s Anode & Cathode
hello, im a university student in KOREA. these days, i study about FuelCell.I tried to make model of 3by3 PEMFC using COMSOL 5.3. I already make geometry n physics about Anode & Cathode 's Chanels,...
View ArticleDistributed Initial Stress as function of dimension.
Hi, I am new in Comsol. - I would like to know how to create distribute Initial Stress as function of dimension (like length and width). for example [(length +width)*Initial Stress] at any given length...
View ArticleModeling FuelCells_error 'undefined variable '
Now i tried to make a model of PEM FuelCell, but after building mesh, i have a problem. i got error message at variable. "Undefined variable. - Variable: comp1.tcs.w0_wO2"what does it mean?? i never...
View ArticleSurface currents on Transition Boundary Condition
Hello,I was wondering how do I look at the surface currents on each side of the transition boundary condition. I'm using Magnetic Fields module if that matters.I tried up() and down() operators on...
View ArticleSimulation study of tertiary current distributions on rotating electrodes
This title were uploaded by COMSOL, so my intention is to know how this author rotate the electrode in electrochemical module or electrodeposition module.
View ArticleTime Dependent Boundary Load
Hello:I am trying to conduct a time dependent study on a cubical block in which the boundary load increases with time, then decreases with time and then remains constant fora some time (attached please...
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