Quantcast
Channel: Latest Discussions - COMSOL Forums
Browsing all 5773 articles
Browse latest View live

Magnetic Field in Axisymmetric Model

Hello,I am having trouble seeing the correct results from a current in a loop of wire in an axisymmetric model. I am using the Magnetic Fields physics and I've tried adding either an External Current...

View Article


HOW to select output variable(mfnc.normB) as the input variable for the next...

I want to topology a domian (iron or magnet) where the nonlinear material iron need input the B ,so how can I set the variable ?

View Article


adding our own boundary conditions

I want to add my own boundary conditions. how to go for it?

View Article

Oscillating magnetic bearing problems

Hello everyone.I'm investigating a type of magnetic bearing and the eddy currents induced during axial displacement. I have therefore modelled a axisymmetric bearing. I'm trying to do a time-dependent...

View Article

How to simulate dendritic solidification with phase field method

Does anyone know how to simulate dendritic solidification with phase field method,Can we communicate,I need your help,thank you so much.

View Article


Acoustic Module: Monopole Vertice Selection

Hi,I have imported a 3D mapping of a space and managed to mesh it and run a modal analysis of the space.My next step was to obtain a frequency response at specific locations within the space.I have...

View Article

What is reference temperature?

dear everybody,may i know the function of reference temperature? i've read somewhere that it is only imporatant for solid mechanics problem, is this true? does it play an important role for fluid flow...

View Article

Cooling down a barrel of wort

Dear everyone,For a school project, I have to model a barrel of hot wort cooled down by cold water flowing trough a spiral. Since the barrel is pretty decent in size and there will be some convection...

View Article


Boundaries not applicable (fluid flow in pipe)

To anyone and everyone,I created a pipe using the sweep feature. I can apply inner boundaries for the fluid, but when i look at my wall boundary conditions, all of the outside boudaries of the pipe are...

View Article


Acoustic Piezoelectric Tutorial Help

Hi all,I am trying to study the effects of piezoelectric transducers on a fluid volume similar to traditional ultrasonic cleaning machines. I followed the piezoelectric COMSOL tutorial found here:...

View Article

Pressure acoustic and two-phase flow coupling

I have built a model of Pressure acoustic and two-phase flow coupling to simulate the break of droplets in an ultrasonic field, But when I was doing transient calculations on the two-phase flow part, I...

View Article

Error Message: No consistent initial values were found. Singular matrix.

Hello everyone I am working on a fillet welding time-dependent study. This error occurs: consistent initial values could not be found. The last step is not convergent.Error Message: No consistent...

View Article

Autogenerating geometry in Livelink MATLAB using for loops

Hello, I am currently using the Livelink using MATLAB software and I was wondering if there was an effective way to automate the creation of geometry using for loops.I would like to be able to be able...

View Article


how can I get rid of transient situation in Time Dependent study

I use "Solid Mechanics" and apply a sinusoidal displacement on a cube. I need the displacement of each point at different times. I use Time Dependent study, but the problem is that it shows the...

View Article

Strange temperature drop in appendix

Hello,I have been modelling with COMSOL on a sealing seam of an aluminium composite film (PET, Al, PE) for quite some time. The basic principle is: Two hot beams heat two films on top of each other so...

View Article


Porous medium flow

Dear everyone,Currently I am trying to build a model in which I simulate the flow of air through a concrete block. I am doing so with the Darcy's Law toolbox. As result I would like to see how far the...

View Article

Interruption in streamline

I use spf from Laminar flow to simulate my design on water flow. But there's interruption in the streamline. I changed the flow rate but it didn't work. Attached is the interruption in streamlines, why...

View Article


Failed to find consistent initial values. Singular matrix. Last time step is...

I used partical tracing for fluid flow(fpt) and spf from Laminar flow to simulate my design, I set inlet(including velocity field) and outlet for spf and fpt and release number and walls. It always...

View Article

transformer vibration

Now I need to simulate the acceleration of transformer winding, where can I find a reference case?

View Article

How to input a field variable from matlab to comsol

I am doing a structual optimization, and I can not find a way to transfer the design variable (a field variable) to the comsol from matlab. Can someone shed a light on it, please!!!

View Article
Browsing all 5773 articles
Browse latest View live


<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>