estimate Erosion rates due to sand transport in oil and gas pipelines
Dear All i am going to modelling the pipeline to find the erosion rates in the pipe due to presence of sand in oil and gas pipelines. it would be great to get some idea about that and the ability of...
View ArticleEigenvalue Calculations In RF Module With Perfectly Matched Layers: Radiation...
Hi everyone, I have one part general info that maybe others will find helpful, and one part question. Here goes: I've been trying to compute the eigenvalues of dielectric GaAs disk structures (embedded...
View ArticleFiber Bragg Grating simulation using COMSOL v3.4
Hello ppl, Im new here. Im doin thesis on Fiber Bragg Grating simulation. Can anyone help me on FBG issue that is it possible to design Fiber Bragg Grating using COMSOL v3.4? Let me know ASAP plz. Thanks.
View ArticleWeak Constraints from COMSOL 3.5 to 4.2a
Hi I have seen many posts regarding this but none had any definite answer. I am trying to follow a tutorial which involving Stoke's flow, and have the following problems: 1. "Go to Properties of mmglf...
View ArticleForced convection - horizontal flow against a plane sheet with a blunt edge
Hi folks, that's my first time I'm working with COMSOL MULTIPHYSICS and I'm trying to simulate a horizontal flow against a plane sheet with a blunt edge. I use convective and conductive (cc) and...
View ArticleAssigning velocity as a boundary condition
Hi I am modeling an electrophoretic phenomena where the governing equations are - Navier Stokes equati - Poisson equation - Nernst Plank equation This is an axisymmetric model containing a half circle...
View Articlecomsol 3.5 Capacitance and permittivity calculation
Hello everyone, I 'm new to comsol and I've been trying to model a simple parallel plate capacitor with a mixture as dielectric. I wish to obtain the effective permittivity value of the mixture. Since...
View Articlecapacitive accelerometer
hi, my project is capacitive accelerometer.i am totally new to this sofware.so can you please help me out with my problems. for a start i need a structure for comb drive actuator which i will be using...
View ArticleRF Module: material dispersion for transient simulations
How do I simulate structures with dispersion using the transient solver in RF module? I am new at this, so any examples or step-by-step tutorials would greatly be appreciated.
View ArticleSimulate an on-chip inductor
Hi :) I am new with Comsol and I am trying to draw an on chip inductor (the square shaped one) and then I want to study the electromagnetic effects and the properties (L and Q..) How can I draw the...
View ArticleConvert 2D to 3D
Hi, I imported an on chip inductor that I draw in Layout Cadence (Format *.gds). The inductor is in 2D and I want to convert it on 3D in COMSOl so I can go further with my work.. How can I do this in...
View Articlehow to integrate MOS channel on the diaphragm
Dear All, please tell me how to model MOS channel on the diaphragm .i use resistve property of mos channel to model it but facing problem .
View Articleimprovement for the forum
Hello, this forum is of little help in its actual form... plenty of questions, fews answers.. no doubt it is helpful, but it can be better organized.. I would like the results of a "filter by topic"...
View ArticleFluid across cylinder with heat source
Hi! I am doing a small project about an heat exchanger. First I should study the Reynolds number effect and the vortex shedding. I already have some results about that (I should be able to calculate...
View ArticleElectromigration,Free Equation Modeling
Hello, I am studying several articles and modeling them in Comsol for verification. The PDE is as follows: dC/dt= d^2C/dx^2 - alpha* dC/dx (Lloyd and Clements) and the boundary conditions at both end...
View ArticleForced Convection over a plane plate
Hi guys, I calculated the cooling of a plate by a turbulent forced convection analytically. Now I want to check my results with COMSOL but I have some troubles, maybe someone would be so kind and help...
View ArticleError message: Undefined value found
Hi, I have this error massage when running my COMSOL model. Can anyone give me some clue for fixing it? Thanks Ming Exception: com.femlab.jni.FlNativeException: Undefined value found Solvermodel...
View ArticleWhy the results from 3.5 and 4.3 are so different?
I am doing simulation on 3.5 and 4.3. With almost the same setting. The results from these two versions are totally different. Which one shall I trust?
View ArticleNonlinear optic material
Dear all, Is it possible in COMSOL to simulate second harmonic generation of a nonlinear material (with electric field dependent susceptibility) within "Harmonic propagation" category? (I don't want to...
View ArticleDEFORMED MESH
i want to use both magnetostatics and transient moving mesh on a magnet. my geometry consists of 2 permanent magnet(fixed on either end), and a permanent magnet in the middle. i want to apply deformed...
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