How to turn bézier curves into surface
Hi, is it possible to turn a bézier curve into a surface which can be extruded? Thank you for your help. Sandra
View ArticleSurface tension effects on a free boundary
Dear all, In COMSOL website, there is a model for "Square Droplet Oscillations under Surface Tension". In this model, instead of two phase flow modeling, ALE and single phase flow have been combined,...
View ArticleLocal Edge System
Hello, I'm trying to implement a "Predescribed Displacement" Condition on an Edge using the local Edge Coordinate system. But i have the Problem that i couldn't find a reference to the "Local Edge...
View ArticleHow to know a material's parameter value
Hi people, i have a newbie question: in my heat transfer simulation i'm using a wood block (kingwood of Comsol material database). If i look the parameters, the value of density rho is not indicated:...
View ArticleFail to simulate 2 physics together
Hello, I am trying to simulate a model which has both solid mechanics and magnetic field modules. I can simulate two physics seperately, but every time they are connected, an error returns: Segregated...
View ArticleMagnetic field Variation from a Cylindrical shaped Permanent Magnet
Hello all, Kindly help me to solve the below issue. My model is a very simple one, consisting of a permanent magnet having a residual magnetic field, say along X direction, of 1 T. Magnet is circular...
View ArticleCoupling transient EM and HD calculations
Hello, I am trying to perform 2D-axi transient calculation of time harmonic magnetic field impact on liquid metal. Generally I need to solve Induction eq., derive induced EM (Lorenz) force...
View Articleextracting data from comsol to matlab through mphinterp
Hello, I have implemented the mphinterp function but when I want to extract results for different parameters something goes wrong. My typical comsolfiles look something like this: - In the Study...
View ArticlePyramid with rounded corners
Hey all! I am very new to COMSOL and for a research project I am now trying to model plasmonic effects on the tip of small pyramids. The problem I have encountered is that I don't want any divergence...
View Articleintegrating a lookup table for frequency dependent variables
Hi everyone, I have created a lookup table for frequency dependent values of epsilon_r. This table includes two interpolation functions: one for the real part (eps_real) and the other for the imaginary...
View ArticleHelp with Tracer Dye Profile in Laminar Pipe Flow
I am new to COMSOL. I am currently in a Finite Element class and we have an educational license for Abaqus, but as the lone environmental engineer in the class it doesn't provide me with much useful...
View ArticleContact pair ignored/not solved for
Hi all, I have been struggling with this problem for a couple of days now, and I still can't identify why it is not working as should. I'm modeling a microvalve in a silicon MEMS structure. The idea is...
View Articlestudy enzyme kinetics
Hi I want to use COMSOL to study enzyme kinetics and their activity, so I need ideas to create a model that helps me to simulate the environment of the enzyme. so can you give me some help .. cordially
View ArticleShell-solid interaction
I am trying to solve a basic model, whereby two (or more) identical hollow shell cylinders (columns) of 2m radius and 30m height with a mass on the top are placed on a solid cylinder with dimensions of...
View Articleintensity in acoustic
Re: Hi when you start with COMSOL try to use only 1 physics at the time, test yourmodel physics by physics, once you have got the 3 fundamental physics working alone (with fixed values for the...
View ArticleFace and edge selection broken in 4.3/4.3a on NVidia/OpenGL
Continued from other thread:www.comsol.com/community/forums/general/thread/32259/ The other thread was marked as "Solved", but it's not solved (using software rendering is not a sufficient workaround),...
View ArticleHelicoidal geometry
Hi everybody, I would like to know how to create an helix along a cone surface (3D)? I want an helix determinated according to the cone shape. Thanks
View Articlecould anyone can help me to draw a spherical cap
i want to study the sound radiation from a spherical cap. and i need to get the regular meshes at the surface of the spherical cap, thanks a lot for the person who gives help to me.
View ArticleCan shell unit link with solid unit directly?
I want to calculate the eigenfrequency of the sturcture below (in the attachment),but I am not sure whether the model I built is reasonable, can anybody help me check it ? (I use shell unit in above...
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