How to obtain the a0 (Inward acceleration) of a transducer in water?
Hi all, I am simulating an accoustic chamber using water. In the pressure accoustics node, Comsol requests an a0 value or inward accelaration. I know this is an experimental value, but is there any...
View ArticleHeat Transfer in 3D Metal Powder
I have been trying to simulate the heat transfer in 3D Metal Powder. However, after I set a boundary heat source at one section of the sphere (there are 8 sections in total), COMSOL told me I didn't...
View ArticleInductance and magnetic field of spiral coil
Hello,I am trying to simulate the magnetic field of a flat spiral coil and calculate it's inductance, I've built a 3D model using parameteric equation and sweep, When using the stationary study the...
View ArticleSOC of an expanding battery
Hi community,I'm working with a Lithium-Ion Battery in 2D. Now I'm simulating the thermal expansion of the components, by using a moving mesh. This expansion happens during the charge of the battery in...
View ArticleModelling Transient Laminar To Turbulent Flowrates
All,I've been trying to find workarounds, or an official method, to model a time-dependent heating and flow simulation, where the heating stage has no fluid flowing (<0.1% full flow to help...
View ArticleConstrained Optimization
I am trying to impose a total energy dissipation constraint on a fluid flow topology optimization problem.The equation is: ∅=∫(τ:S+α(u.u))dVWhere α is a function of the density variable.I added the...
View ArticleNon functioning of help window
I am using the latest version of Comsol(5.5). The help option is not working for me (be it online or offline). The help window is opening, but it showing"Failed to establish a connection to the...
View ArticleMaterial properties required by TDS physics
Hello everyone!**Does the Transport of Diluted Species (TDS) strictly require specific material properties other than diffusion coefficient? **I have noticed that as long as you know the diffusion...
View ArticleSlow Meshing for CFD Channel
Hi everyone,I am very new to COMSOL, but I have a decent amount of experience in fluid dynamics and CFD (mostly Fluent and CFX). I am trying to set-up a simple 2-D laminar flow model on a micro-fluidic...
View ArticleMobile Repair Dubai - QuikSolutions
Correspondence has changed a great deal for two or three decades, and its initiation was in 1995 when the first Smartphone was propelled. Today, it has gotten one of the fundamental necessities for...
View ArticleStudent
Dear Sir, I have model a hollow pipe in comsol 5.4. I need degre of freedom at both end of the pipe. How to get list of all degree of freedom associated with both edges.
View ArticleExport COMSOL Model to CAD
Hi,I am thinking to modify my COMSOL geometry model using AutoCAD. Is it possible to export a COMSOL 3D geometry to AutoCAD? if it is what is the way? .Thanks in advance.Masha
View ArticlePorous Electrode vs Li metal half cell
Hello everyone, I am currently setting up a simulation of a half cell to evaluate the performance of a porous electrode material. I wanted to start from one of the application library examples, thought...
View ArticleElectric potential difference with respect to something
Hi,I am using the electrochemistry module to model an electrode device in biological tissue in 3D. I can take a slice at x=0 of the yz-plane and plot the electrolyte potential as a surface plot. Is...
View ArticleHow to do a parametric sweep with the Rayleigh number?
Hello, I've been doing some bouyancy simulation in a square cavity, specifically I've been following this tutorial:https://www.comsol.com/model/buoyancy-flow-in-air-53441Everything is okay, but I'd...
View ArticleHow to apply a travelling wave to a structure??
Hello, I am trying to design a stacked ring structure to which I want to apply a travelling voltage wave. Please help me out.
View Articlewound rotor induction motor using rmm physics
Hi, I'm in need of a WRIM model on comsol cause i'm new to the software and i don't know all the settings i have to do before doing my study. Can you please help me ?
View Article3d analysis of inductively coupled plasma
Hi , we are performing a 3d analysis of inductively coupled plasma and have all the time same problem : Failed to find a solution. Divergence of the linear iterations. Returned solution is not...
View ArticleWeird temperature jitters in my solutions
Hey comsolholics,I'm currently running into a problem regarding the solutions of my additive manufacturing simulation. I expected values comparable to those of the last picture, which is a (much) older...
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