How to export intensity (gop.I) data in ray optics ?
Hi, I'm simulating a model quite similar to linear wave retarder in the application libraries in the ray optics. I can successfully trace the ray, but somehow I cannot export the intensity (gop.I)...
View ArticleError message - error log attached
Hi, I'm unsure as to how to solve this error message. The system has plenty of storage, so unsure as how to solve the problem. The programme keeps crashing, and files still says they're locked despite...
View Articleuse result from a study to calculate a variable and use this as input for...
Dear COMSOL users,I'm a student and attempting a RF system in combination with a DC magnetic field.First, I simulated the magnetic field of my model in COMSOL. Now in my next study (frequency domain,...
View ArticleMesh error (Intersecting edges)
Recently i have been working on muffler design so during pressure acoustics analysis this mesh error occured. I read previous thread about interseting edges error and tried to solve by that but it...
View ArticleParticle Agglomeration in a flow
Hi, I am new to this software. I want to simulate particle agglomeration in a flow. Which module of COMSOL should I use for my analysis? Thanks
View Articlemeshing problem
I have created a model in comsol 5.4 , when I use Comsol to mesh it under Physical field control. It reported errors, however , I dont know how to mesh it by user control because it is relatively...
View Articlefinding rotations between two points on a plane
So I have the results of an eigenfrequency analysis, and would like to find out how much an object has rotated in a certain plane. For instance, in the picture below, I'd like to find out how much the...
View ArticleSteady-Time
Is there any simple way to identify the time that solution reaches steady state,*** " in particular in Livelink-Matlab"***For instance, time-dependent fluid flow through a simple Y- junction needs...
View ArticleTransport of concentrated species
HiI am using Transport of concentrated species (tds) module to model the heterogeneous combustion of methane on the catalyst surface. I find that the feature 'Reactive pellets' in Transport in diluted...
View Articlehow can I determine simulation sphere radius
HiIn a scattering problem, at what distance should the PML be away from my scattering object? and how can I determine the best PML thickness?Please help, I tried 0.5 lda, lda, 1.5lda and 2 lda and I'm...
View Articlehow to use parametric sweep for varied distances
Hello everyone,I have a point souce and a model which is about 1 meter far from it. I am calculating the electric distribution in the model due to the point source. I am using parametric sweep for...
View ArticleHow to flatten a 3D Curve object into 2D
Sorry if this is an obvious question.I've isolated a curve out of a complex 3D geometry. I want to flatten this curve in 2D, allowing me to generate a 2D geometry that I can use to create something I...
View ArticleMagnetic diffusion in copper
Dear all, Well, I have some trouble with induced currents by an external magnetic field. Let's say I want to calculate the induced currents and associated magnetic field in a rod (300mm long, 40mm...
View ArticleClik here to view.
Materials Overlapping
Hi evryone. I'm new in comsol. I'm a student of master degree .. option Physics and radiation technologies. I want to simulate the thermal stress of fuel rod in triga nuclear reactor. I have a little...
View ArticleColor bar in log scale?
Hi all,I have a surface plot of velocity. I would want to keep the velocities in original form and only want to change the colorbar to log scale. Is there a way to do this?If I do, log10(u), then the...
View ArticleCoupling solid mechanics module with semiconductor module
I am trying to study the effect of piezoelectric effect with the semiconductor domain. But I am not able to couple these two modules.
View ArticlePolymer Medical Implant
Altruists, Could you provide me with any paper/manual/journal where a medical implant is designed with a polymer material in COMSOL?Thanks.
View ArticleAbout the electric circuit and static electricity
I have a model of arc extinguishing chamber of circuit breaker and add a electric circuit of it.I want to simulate that when the capactior of the electric circuit changes,how does the field strength of...
View ArticleOptimization time-dependent Nelder-Mead
In time-dependent optimization using Nelder-Mead method. We use the values of object at the last time point. However, we want the constraints to work during the whole time range? Can Comsol do this?
View ArticleParametric Sweep Results as Initial Values
Hello everyoneI'm trying to take the results of a Parametric Sweep in Study 1 as Initial Values of the same Parametric Sweep (same parameter and values) in Study 2.But when looking at initial values,...
View Article