Mie scattering in 4.3
Hello, I have already seen some discussion about mid scattering of a gold nanosphere. But I the discussions I have consulted, no one has yet implemented a mie scattering program in Comsol 4.2 or 4.3...
View ArticleInaccuracies in the formulas of the Materials Browser
Let's work with Structural Mechanics Module> Thermal stress. The temperature at which there is no change in size of your model, called Tref. L (T) - the size of your model at a temperature T. To...
View ArticleUsing the Optimization Module for geometry examination
Geometry optiization 4.3a Simple 1D sold state battery problem (in COMSOL) Done with assistance from COMSOL M = length of anode 320 nm L = length of solid electrolyte 1500 nm objective function =...
View ArticleMeshing and Simulation of a Sphere partially covered with gold
Dears i am trying to perform an eigenfrequency simulation of the sphere i show in the file. The sphere is anchored by the circle in the bottom. And is covered, partially of a thin layers of Gold...
View ArticleModeling a Dielectric as a Real Capacitor
Hello everyone, I am having trouble modeling something. I would like to look at the conduction/conductance/resistivity of a insulating/conductive composite. It could be thought to be like a...
View Articleerror:1038 File created by a later version of COMSOL
Hi I work with version 3.5a. I want to open a file but i encourage an error:1038 File created by a later version of COMSOL How can i open it, i think it is with version 3.5 Thanks in advance
View ArticleSimulating a Magneto-caloric effect in Comsol
I have a problem in which i have a permanent magnet. In regards to theory of Magneto-caloric effect, if i pass the magnetic field to the gadolinium(rare earth, lanthanide group in periodic table),...
View ArticleHow do I model two different fluids in one domain?
Hi, I am new to COMSOL, and am trying to model a microfluidic device that has two fluids, each with a different conductivity. I tried building a geometry with two domains that are a union with an...
View Articleshear wave propagation simulation
Hi, I am trying to simulate a shear wave propagation in a homogeneous, isotropic, and linearly elastic material. I constructed a cube for simulation and applied fixed boundary condition to one side of...
View Articlehow to simulate the bending of two metal cylinders when they have different...
Hi, guys. Recently I want to simulate the interaction between two cylinders which are made of metal when they have different voltages on them. I think it is in the emi model. But I can't done it...
View Articleexporting 3D simulation's output data from model 1 and importing as input...
Hi, I am trying to simulate on micro-mixer with 3D structure. I am having trouble with importing the model 1 output data to the model 2 input profile correctly. I tried using the interpolation function...
View ArticleInductively coupled plasma-High vacuum-Laminar flow-Free Molecular Flow-times...
hello! *** first question: I try to simulate the device using the PLASMA MODULE (inductively coupled plasma) and LAMINAR FLOW in a vacuum (10 millitorr). The problem is that when I run the solver, had...
View ArticleI want to simulate the deformation of two cylinders when they have different...
Hi, guys, I want to simulate the deformation of two cylinders when they have different potential. Is the model right? In the calucation, I find the model has difficulties to converge.
View ArticleUnknown function or operator
I defined an integration operator intop2 under Model 1 --> Definitions. But when I try to plot the results under Results --> 1 D Plot Group 1 --> Global 4, it says "Unknown function or...
View ArticleGraphene layer - transition boundary condition
I am trying to analyze a waveguide with a graphene layer, using Perpendicular Waves - Hybrid Modes. In this analysis, the graphene layer is considered as an infinitely thin conducting layer. Thus I...
View ArticleApparent inconsistency in induction heating solution methods
Hi everyone, I'm new to COMSOL 4.3, and I'm trying to properly use the induction heating module. While modeling the problem of a current loop heating several iron inductors embedded in water in 3D,...
View Articlephase change material
Hi, I am working on phase change material. During the simulating the Global Definitions, I can not understand that how step 1(function H) and step 2(function T_right) are working. and how they will...
View Articlephononic crystal -- Acoustic Structure Interaction
hello, i'm computing the phononic crystal band structure using the Acoustic Structure Interaction modal, and the PC is 2D square lattice and the unit cell is a circle in a square area. the problem is...
View ArticleIntegration of MATLAB functions with more than one variable
Hi, I want to realize an integration in COMSOL 4.3a using self-written MATLAB functions. If I use a test function with one input and one output argument everything works as expected (plotting function,...
View ArticleRib waveguide
Hi I want to simulate this rib waveguide,but when i want to solve the problem the wave scattered every where of the waveguide that it is wrong.It should amplify the center of the waveguide. Who can...
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