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Trying to add LASER radiation source to a 3D model
Hello, i have a 3D model of the human eye, i'm trying to add a LASER source and to examine the heating distribution, i added materials for each domain such as absorption and scattering coefficients,...
View ArticleSimulating non-periodic nanoparticle - problem.
Hello all,I am hoping to simulate a non-periodic free-floating nanostructure encapsulated entirely by silica glass. The entire structure is surrounded by a PML layer. I extract transmission and...
View ArticleTracking displacement on a thermal actuator after remove voltage source
Hello,I am new in comsol. Now, I am trying to simulate displacement of a thermal actuator under 5V. I am using the time-dependent modal. I can get results of stress, displacement, and temperature....
View ArticleResults Problem
I am desigining a capacitor. I need to plot capacitance vs separation between two plates. 3D plot is generated for all the values of parameters. But now i want to generate 1D plot between capacitance...
View ArticleThin Film BAW Composite Resonator in 2-D
Hey,Can anyone help me with my model. I am a beginner to COMSOL. For some reason I am not able to figure out the boundary selection of the device since I am trying to perfom a frequency domain analysis...
View ArticleStrainrate to find Viscosity
In the non-isothermal fluid physics, I prescribe certain velocity field boundary conditions and solve for the velocity field as a function of time. I would like to use the strain rate of the velocity...
View ArticleFlow time - CFD
Dear all,I´ve used a model with CFD coupled with heat transfer in a simulation of a coaxial treatment chamber for liquid sterilization.I would like to obtain the liquid flow time ( time that liquid...
View Articleperiodic boundary condition against no flux Comsol PDE
The below post is related to an archived discussion[start here]Hi, i am using PDE, module. I have checked that my results are same with and without using Periodic conditions on a boundary .The no flux...
View ArticleDifference between Variables and Analytical Functions
Hi!I would like to aply a heat flux with a mathematical definition onto a surface. I have noticed that there are two ways to do this. I can define the heat flux as a analytical function or write the...
View ArticleResuls and Plots
Hello! every one. I have some troubles to Plot and reproduce my results, because each Plot appear one over the other and I can´t see properly the curves and 3D plots . I would like to know how can I...
View ArticleHeat transfer module: no surface-to-surface-radiation modelling found
Hello everybody,I tried to set up a simple simulation (Comsol4.4) to estimate heat transfere in our experiment. Since some parts are cooled to low temperatures, it will be nessecary to implement...
View ArticleCoupling between "Laminar flow" and "Heat transfer"
Dearl all,I´ve used Comsol version 4.4 for generation of a electric field distribution coupled with temperature (heat transfer) and fluid dynamic (laminar flow) in a coaxial treatment chamber for...
View ArticleThermo-mechanical model of a Laser beam Welding process - convergence problems
Dear Comsol community,I´m struggling a lot with my model, as it keeps failing due to convergence problems. My goal is to calculate different reaction forces on clamping devices during laser beam...
View ArticleGrounding problem: inject voltage/current in a conductor buried into a soil
Hi, I’m trying to simulate a problem that consists of a vertical cylinder conductor, with a certain radius and length, buried into a cylinder material like soil, with conductivity equals to 0.01 S/m,...
View Articleobtain temperature data over a line at a particular time
I would like to obtain a table of the temperature over a given line in my model at a given time. Is there a way to do this? I see that I can do the following, but these aren't quite what I'm looking...
View ArticleInterpolation Function with 2 arguments
Hello people, I have a problem. So, I'm trying to enter Cp(specific heat) as a function of two variables-temperature and magnetic field. Cp as a function of T is accepted under the particular material...
View ArticleHOW TO FIND REFRACTIVE INDEX OF CLADDING IN PCF OF CAMSOL DESIGN
i can find neff. of pcf from camsol but how we know the index of cladding please help
View ArticleCFD
Hi, please help me.I want a constant temperature gradient across a stack of thermoacoustic engine, but transient fluid flow (velocity, pressure variation). Please suggest me the correct phyiscs with...
View Articlefacing problem in making union without interior boundaries
The below post is related to an archived discussionI want to join the 3 parts in the attached file. but I see the following error, how should i resolve? "Internal error in geometry decomposition"
View Articlefunction for distribution of discrete values (0 and 1)
hi all,I am new to COMSOL. I was wondering if somebody can help me with this. I want to make a function that gives me 20% (by area) distribution of value 1 and remaining 80% area the value of zero. I...
View Article![SennaRin – ADRENA (2024-05-15) [FLAC 24bit/48kHz]](http://getimg.link/images/2024/05/21/7446422.jpg)
