Coefficient Form PDE and periodic boundary conditions
Hi, I'm new to COMSOL so I would like some help regarding the following - I'm trying to perform a phononic crystal simulation using coefficient form pde. I have a hexagon with a circular hole shape...
View Articlephononic crystal band gap
Hi, I would like to know how to obtain the band gap diagram of a phononic crystal in Comsol. I was trying to use photonic crystal model presented to model one unit cell, but I don't know how to use it...
View ArticleCoefficient Form PDE and periodic boundary conditions
Hi, I'm new to COMSOL so I would like some help regarding the following - I'm trying to perform a phononic crystal simulation using coefficient form pde. I have a hexagon with a circular hole shape...
View Articlephononic crystal band gap
Hi, I would like to know how to obtain the band gap diagram of a phononic crystal in Comsol. I was trying to use photonic crystal model presented to model one unit cell, but I don't know how to use it...
View ArticleCoefficient Form PDE and periodic boundary conditions
Hi, I'm new to COMSOL so I would like some help regarding the following - I'm trying to perform a phononic crystal simulation using coefficient form pde. I have a hexagon with a circular hole shape...
View Articlephononic crystal band gap
Hi, I would like to know how to obtain the band gap diagram of a phononic crystal in Comsol. I was trying to use photonic crystal model presented to model one unit cell, but I don't know how to use it...
View ArticleWhy coupled equation didn't get the coupled result?
Hi friends,I try to use the weak form equation of poroelastic to modeling biot's consolidation using WEAK FROM PDEs. I use the exact same equation and I am pretty the equation is coupled physically....
View ArticleTEC Modeling
Hello,I have a TEC1-12706 peltier that has a max current rating of 6A (12V). It has 127 thermocouple pairs (connected in series electrically and parallel thermally). I was wondering how to model this...
View Articleoverlapping knot geometry
Hi everyone. I have a question related to creating the overlapping geometry. The point is that I am simulating knot microstructure defined locally on tapered optical fiber. The problem is how to create...
View ArticleAcoustic shell interaction
Acoustic source is in the water and it is 30 mm away from the centre of hollow aluminium cylinder of thickness 0.01mm , diameter 5mm and height 20 mm and cylinder is filled with water. I want to find...
View ArticleFailed to evaluate Jacobian of expression./Undefined variable.
I have created a tube in tube geomtry for adsorption of gases. This is error I'm getting after computation. Can anyone help in this?Undefined variable. - Variable: comp1.mat2.def.pA - Geometry: geom1 -...
View ArticleHow to model a Stefan's Problem when the interface is at x=0
I am trying to model a 1-d Stefan's problem in a porous media. I have examined the example given in the library manual for a Stefan't problem, but the intereface starts at some intermediate part. How...
View ArticleLinear-elastic model particle-particle interaction
Hi all,I have a study of multiphase flow (continuous phase: gas, discrete phase: solid particles - size 50 μm), where particle-particle interaction must be included.When I looked at the Comsol...
View ArticleModeling Saponification of ethyl acetate in a tubular flow reactor
**I tried to model a saponification of ethyl acetate The reaction is NaoH+EtOAC=>NaOAC+EtOH **The first model is 0 dimension model. I created a model with 0-dimension>Reaction engineering...
View ArticleControling the voltages of step up transformer
Hi,,,, I am designing step up transforemer,,,but i am unable to control the voltages on primary and secondary side,,,How can i control these voltages? on what paramerters, do these voltages depend on?
View ArticleCan I investigate magnetic flux phase?
After poking around the software I wanted to ask a quick question:Is there a way I can look at the phase of an alternating magnetic flux? I am thinking about induction motors and shaded poles so I'd...
View ArticleCuring of Epoxy
I am trying to simulate degree of cure of epoxy in Comsol. I think my equations are correct but i keep on getting error message "Feature: Time-Dependent Solver 1 (sol1/t1) Failed to evaluate reaction...
View ArticleGas diffusion in heavy oil
Hi, I am heavy difficulty simulating diffusion of Propane or CO2 into heavy oil. Can you please share a sample file to me that can help me do so.
View ArticleOld Comsol files
Hi, I have some COMSOL files from date 2009. How can I open them with the latest comsol? I have 5.3.
View ArticleModelling of flow generated by Electrohydrodynamic action
Hello, I have recently started using comsol for my project. I am getting error of maximum iteration reached and also other time infinity value in residual vector. I don't know what is wrong? Kindly...
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