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 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 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 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 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 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 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 ArticleHyperelasticity and Solver
Hello, My model is currently using one material as a hyperelastic material and the other as a linear elastic material in an air-bound box. However, in reality, both materials within the box are...
View ArticleHow does COMSOL treat a line source in 3D?
Hello everybody, I am simulating a heat transfer problem which incorporates line sources. Does anybody know how COMSOL deals with the singularities? Are nodal points set on the line source? When...
View ArticleMoving sphere in air
I want to set up a simulation about a moving sphere(still or rotating) in air. But I do not know which model should I use and how to set up the simulation. Is there anyone who can help me with it? (...
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 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 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...
View ArticleSolving Time-Dependent Problems - mesh size?
Hi guys! I have a very quick question. Does the MESH SIZE have an influence on the time step when solving the time dependent problems? If so, does COMSOL have some automatic changing of the time step...
View ArticleMagnetic field resulting from a dipole
Can anyone help me with the following problem? I've implemented an electric point dipole somewhere in a sphere made of 4 layers, each with a different conductivity. I want to compute the electric...
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