Pulse Volt vs Time
Does anyone has any idea where and how can I insert a time factor into the simulation? Let says I want the voltage to rise from 0 to 2V (within 40ns) --> stays at 2V for another 100ns --> falls...
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how can i plot a line graph of load against deflection at the mid point for a 3D beam
View ArticleLarge Eddy Simulation
hello I want to use Large Eddy Simulation on comsol but I can't found it. Can you help how to do this. thanks a lot
View Articlesimulate the electric field and potential distribution
Hi I am using AC/DC module to simulate the electric field and potential distribution over a high voltage composite insulator. when applying AC input voltage. I got the electric field distribution E...
View Articlehow to resolve error? The smoothing zone must be smaller than half the width.
The smoothing zone must be smaller than half the width. Thanks for hints.
View ArticleHelmholtz PDE for Acoustic scattering
I´m traying to use the General PDE- Helmholtz equation to solve an acoustic scattering problem, I know I can use the Acoustic Module, but i want to do it with the general PDE as this give me a little...
View ArticleRadiation model
Hi, I am starting to use Comsol and have problems making a simple model. It consists on a heat source ( rectangle for example) and a thin sheet of aluminum where I want to see how the temperature...
View ArticleVariable length of the boundary load
Dear all, I have a simple 2D model, that is a cantilever beam. I would apply on this beam a boundary load, but the LENGTH of the boundary load should change over time (increasing or decreasing). Just...
View Articleimplementation of COMSOL ECMP model showcased in COMSOL Conference at Boston
Can any one help me out in implementing the comsol model given in the paper " experimental validation of model of electrochemical mechanical planarization of copper". I have been working on it for...
View ArticleDeflection in a Membrane due to Stress
Hi Everyone, I have a circular membrane ( made of Single crystal silicon Si(c) ) of 6mm diameter and 5 um thickness. The Membrane is fixed through the sides with a residual/intrinsic/internal stress of...
View ArticleI have a singular matrix error on MEF simulation
I tried to make helmholtz coil. However, I have a problem of singular matrix. What is the problem in my simulation?
View Articleintegral
hi do you know if it possible to calculate this integral in comsol (attach file) ? thanks
View ArticleCoupled heat-transfer electomagnetic waves modeling on the nanoscale-...
Hi all, I'm hoping someone with experience in the heat transfer module can help me here. I'm modeling arrays of nano-structures on a substrate excited with normally-incident, linearly polarised light...
View Article2D TRANSIENT Heat Transfer Problem
Hi everyone, I am encountering an error in the time dependent situation - Failed to find consistent initial values, last time steps not converged. I have specified 'initial values' and the required...
View Articledefine many material
hi everybody. do you know how define many material in a script in using matlab with comsol ? thanks
View ArticleElectrical circuit around a beam.
I have a aluminium beam with a piezoelectric patch at its center. The beam is loaded by a harmonic force. I have modeled this and the loaded beam shows expected results both in terms of displacement...
View ArticleUsing a Gaussian Pulse
Hi everyone, I'm actuallay working on a modeling of a laser pulse which is heating a front of a material in order to determinate the diffusivity, my current issue is that i would like to model my heat...
View ArticleNusselt number calculation in comsol 4.2
Dear All, I simulated a simple laminar flow of a liquid metal inside a 1 inch tube of 0.5m length with a constant heat flux acting at its wall in comsol 4.2. I used both the mesh options i.e. the...
View ArticleState Space Export
Hi , i have build a simple cantilever beam model using time depented model. after defining the points of forces and parameters, i want to export the model to matlb (State Space Matrices) so i could...
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