How to model a coaxial cable in AC/DC electrical circuit interface?
Hi everyone,I' am modeling a configuration of two devices which are connected by a coaxial cable. My model includes both Electrical Currents and Electrical Circuits interfaces: The only problem is the...
View ArticleMultiple Convergence Critera for the Fully Coupled Node
Hi,I'm seeking a high level understanding of the iteritive processes under the Fully Coupled attribute node. I realize that the couplings are meant to be between coupled multiphysics problems, although...
View ArticleExport Node Advanced tab fields
Hi,I'm seeking more information about the Advanced tab fields for the Export Data node. I'm exporting the electric potential V and field variables es.Ez, es.Ex, es.Ey for a solution to an...
View Articlen.D in electric current module
Hi all,I need to give surface charge density (n.D = constant) boundary condition in electric currents module. Or static charge in electric currents module while computing resistivity (or conductivity)...
View ArticleElectric field distortion in a cable
Hi all,How could I simulate electric field distortion in a cable geometry (having non-zero permittivity and conductivity) due to space charge present in it?I am trying to use electric currents physics,...
View ArticleCalculating of inductance of coil in Time dependent
HelloI have a 2D coil with AC current excitation in Time dependent.But i can't calculate 'mf.Lcoil' in Global Evaluation.Thank for your reading
View ArticleStationary and Time dependent study at the same time
Dear colleagues struggling with similar problem.I've simulated rotating permanent magnet(Time Dependent) inside a coil with flowing current of 1A(stationary) and trying to retrieve the data of magnetic...
View ArticleCell Reynolds number
The formula for Cell Reynolds number is given in COMSOL as: 0.25*spf.rho*sqrt(emetric_spatial(u-d(x,TIME),v-d(y,TIME))/emetric2_spatial)/spf.muCould you please explain the formula and in general how...
View ArticleGenerating 1d curve
Hello, everyone. My simulation is based on heat transfer in solids. power is delivered as a rectangular pulse. How to generate total heating power(W) as a function of Conductance(W/(m^2*K)? Scondly...
View ArticleSpiral Induction Coil Geometry Issue
Hello All,I have been attempting to make a spiral coil for a simple induction heating simulation. To make the coil, I have swept a circle along a parametric curve (an Archimedes spiral). However, when...
View ArticleHalf adder using photonic crystals
Hi I am new to comsol and it is my 1st project using it. I am doing an optical half adder using photonic crystal, i have build up my geometry and used frequency domain for my study as attached and i...
View ArticleLift and Drag NACA Airfoil
Hi everyone,after reading Peter Lyu's article "How Do I Comupte Lift and Drag?" I have several questions. I would like to create a simple water turbine referring on the NACA airfoil. So the example is...
View Article3D FSI in comsol- flow through flexible pipe COMSOL 5.3a
I am trying to simulate a 3D FSI flow through a flkexible pipe. I have done a 2D axisymmetric version of the same problem and got results which matches with the previous literature. Its the propagation...
View ArticleAbout Lithium Ion Battery EIS Simulation
Dear COMSOL Engineer： I recently used a one-dimensional capacity decay model for lithium batteries.I want to know if COMSOL can measure the EIS after each aging cycle of the battery.Then,I Want to...
View ArticleNeed the Elasticity matrix, coupling matrix, relative permittivity values of...
Hi, Came up in developing a piezoelectric energy harvesting model and included structural steel in between. But after including domains it showed this errorNeed the Elasticity matrix, coupling matrix,...
View ArticleConversion Of Parametric Surface To Solid
Hi, I try to build geometry in COMSOL via Parametric surface and covert it to solid, the problem is, COMSOL builts it in two forms, in one form i'm able to make a solid object and in another from I...
View ArticleHow to add a rigid body to a electromechanical simulation ?
I would like to model a MEMS device but have one part be rigid. In the solid mechnics modul, one can simply define a rigid domain, by clicking on Material Models>Rigid Domain.However, when I use the...
View ArticleCan comsol calculate the gas-solid coupling model of transient plastic...
I am simulating a gas-solid coupling model with gas coals. The pde module simulates the gas flow field and is used to calculate the gas pressure P. The solid mechanics module is used to simulate the...
View ArticleIsolator layer not isolating
Good evening,I have a model of a thermoelectric generator made of Bi2Te3 and isolated with alumina.However, the isolator layer doesnt have constant voltage, despite the very low electrical conductivity...
View ArticleCOMSOL Simulation For Heat And Mass Transfer Across Membrane For Membrane...
Hi everybody, I am trying to medel a 3D comprehensive mathematical model using comsol for Membrane distillation system (DCMD). I have already used programming to model this system now I used following...
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