human middle ear
hi I have been trying to model the middle part of the human ear for my thesis work.If anyone suggests the middle ear shape,what module to use,it would be helpful for me.
View ArticleCalculating Electrostatic Force without MEMS Module
I've been having difficulty coupling the Electrostatics/Structural Mechanics/Moving Mesh applications. I was previously given advice to look up the MEMS 3D Cantilever Beam model to help me understand...
View ArticleIdentity pair as port source in Comsol 4
Hi all Does anybody knows how to set "identiy pair" as "port" in Comsol 4.0a or 4.1? I am calculating the reflectance and transmittance in Comsol. Previously, I used Comsol 3.5a for this work (refer...
View ArticlePiezoresistive modeling
Hello all I want to simulate a piezoresistive beam with Comsol. I was looking to find an example of piezoresistive modeling to find out what module they usually use and how are the settings but i...
View ArticleDeformation of liquid droplet
I am new to COMSOL, so I am referencing a work on deformation of liquid droplet impacting a solid surface. I tried to recreate the same model as that work. But I ran into several problems. As I tracked...
View ArticleOS X mountain lion (10.8)
Has anyone tested that Comsol 4.3 will work with Mac OS X Mountain Lion (10.8)?
View ArticleHelp modeling supercooling effect in water to ice transition
Hello everyone, relatively new to COMSOL here, I am trying to create a model describing a simulation that took place in a climate chamber. I have attached a graph describing the temperature on the...
View ArticleComsol not following ideal gas law or conservation of mass
Hello, I am currently working on modeling a high temperature hydrogen heat exchanger. I decided to start as simple as possible and just model the heat transfer into an axi-symmetric tube of hydrogen...
View Articlefemur modeling
Hi! I am building a model of femur(thigh bone) and aim at studying their stress and strain distribution on applying a pint load.I have built the model but it doesn't seem to compute,and i can't figure...
View ArticleTemperature Depdendent Electrical Conductivity acting weird.
Hi Everyone, I have two simple questions that I have been unable to answer after trying to work on them for a week. Please help me: 1) I have a very simple model (which I have attached), I am passing a...
View Articlepid control and constraining a variable
Hi, i'm making a pid control of a heat exchanger and I need to constraining the inlet velocity of fluid. The inlet velocity is calculated by the pid control law, but need to be constrained between...
View Articlesubdomain
hello I am working on design of photonic crystal fiber with Comsol using RF(mode analysis). I am using comsol with MATLAB. when I use loop in matlab to change the geometry to find the solution for each...
View ArticleWhere should I put constraint
Hi All, I'm not sure where I should put constraint or maybe I should use prescribed displacement in my model? My model (in attachment): I calculate the stationary state then I use stationary...
View Articlehelp about the finding parameters
Dear all I have problem in my model that , in the two coil system Excited primary coil with the Multi turn coil , and want to see the voltage , current and power in the second coil , and i want to see...
View ArticleConcetration should decrease when heating up a gas?
Hi, I´m modelling a gas that initially is entering to my geometry, with a given velocity, at a fixed concetration of H2 and at 25°C. In this geometry there is a barrier that is at 1100°C that is in...
View Articlefluid structure interaction
Hi , I'm facing a problem with FSI module . for the model in micro fluids library ( obstacle in fluid ) the dimensions are in microns , when increase the dimensions in Cm ( only scaling the model ) ,...
View Articlethe result of building half model to modal ansys(or eigenfrequency ansys ) is...
I build two models to modal ansys, one is half model and the other is whole model(the model is symmetrical),but the results i got is different. frist , the number of whole model`s modal Shape under...
View ArticleHow to rename / view /specify specific boundaries in the geometry.
Dear sir, I have a trouble locating specified boundary in the geometry. I am new to learn COMSOL. I follow up tutorials that asks me to define certain conditions at certain boundaries. I depend on...
View Articlehighly conductive layer
Hi, I tried to do a simple transient heat transfer model as follows: one model with a thin solid domain on top of a thick domain and another model with highly conductive layer on thick domain. The...
View Articlemomentum transport and mass transports coupled simulation using matlab script
Hello All~ I conduct momentum transport and mass transports coupled simulation using matlab script~ but i have some problems~ when i simulated this topic, always failed to find a solutions~...
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