how to model to water droplets in a channel with oil
Hi, I am trying to model two water droplets in a channel with oil and merge them by applying a voltage across the droplets. the surface tension value is 0.05N/m. the droplets are not staing staionary...
View ArticleCyclic Voltammetry for nickel deposition in 3 electrode electrochemical cell
Hi, i'm currently working in a simulation of a CV for nickel deposition in a microelectrode(or maybe Ultramicroelectrode since it should represent a pore of a aluminium oxide template) and im not...
View ArticleCircularly polarized
Hello，I simulate the structure under two-dimensional axisymmetric conditions. Can I set the background field waveform to circularly polarized light?Thanks in advance
View ArticleResearch on Branching Phenomena of Discharge Channel in Needle-Plane Gap of...
Dear teacher, I would like to ask some questions about the phenomenon of discharge branching.How can you model using Comsol software?Can comsol program itself to simulate discharge branching? Looking...
View ArticleAssistance needed
hi, i am modelling the thermal runaway of a li-ion cell and i an trying to obtain the heat released during this process (curve). I will like to implement the equation governing the heat release during...
View ArticleParticle Tracing bug ?
Hi, I had to make a numerical model to simulate the displacement of particles within a polyurethane resin under the effect of a magnetic field, and I can't obtain any result from the particle tracing...
View ArticleThe velocity of gas and liquid in level set module
Hello！I have a problem with the level set module in Fluid Flow (ver. 5.5).I want to see the velocity of oil and water after level set simulation water flooding, however, I only found the mixed speed...
View ArticleNonlinear Time History Analysis
Dear Staff Please tell me : Can Comsol do Nonlinear Dynamic Time History Analysis for concrete structures? if yes, please I need tutorials, thanks Dr. Ibrahim
View ArticleMateriel sweep and parametric sweep. Quick help appreciated?
I have simulation which runs materiel sweeps in the outside for loops and parametric sweep inside for loops. I have around ~500 possible cases for materiel sweeps and for each case, I want to run a...
View ArticleModeling Magnetic Field through a 3D coil
I have a 3D coil (from helix primitive) as shown below. I am trying to input current through the coil and measure magnetic field, much like this article here (this article helped provide me foundation,...
View ArticleModeling Friction
Hello,I am trying to model a Ti-alloy interlocked diamond in compression. As part of the model, I would like to add the friction between the diamond and a "steel plate", which I made into a rigid body...
View ArticleInductor circuit modeling
Suppose I have an inductor that is charged up, holding a constant magnetic field and current. When this inductor is connected to a resistor (like shown below), its current and voltage will decay...
View ArticleIs a Sphere or Cube better computationally
Hello, I am trying to model metatmaterials using perfectly matched layers with the physics Ectromagnetic Wave Frequency Domain. Specifically I am trying to see the scattering effects from a spherical...
View ArticleUnconfined aquifer water table
Hi everyone,I just started to learn COMSOL, and I am struggling on modeling groundwater water table in unconfined aquifer.I tired to use Darcy's Law phyiscs, and in Darcy's law, COMSOL always assumes...
View Articlegraphene FET on COMSOL
Can anyone tell how to design graphene based FET on COMSOL which module should i use ?
View ArticleError Acoustic Diffusion equation
Hi everyone, I am using COMSOL - Acoustic Diffusion interface with room coupling intenal BC. I found this error:Undefined variable. - Variable: comp1.ade.room5.hI am looking for "h" room variable but i...
View ArticlePrescribed Displacement in radial direction for 2D Axisymmetric Analysis
HelloI've been trying to run a simulation for an elastic body which has axial symmetry. However, I could not provide a displacement in radial direction. While imposing a displacement, the body just...
View ArticleBoundary constraints: How to tie nodes in one DOF only?
(Comsol 5.5, Structural mechanics, 3D model)I have a part which contains an initially flat boundary surface (top surface in sketch). Upon application of boundary conditions that do not act directly on...
View ArticleCreating a variable charge on a surface
I'm currently attempting to model the electrospray deposition process using a combination of matlab and comsol (in 2D axissymmetric). The matlab code I'm using takes the model and solves for a particle...
View ArticleDebugging mesh import
Hi all,In a previous post I asked about topological issues, and that was solved. So I began working on an exporter from a mesher I developed to mphtxt.However, I am finding problems in moving from a...
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