Continue calculation with a single value from a sweep
Hi All,Here is a situation that occures very often in my optimization problems. I want to do a simulation in two steps:Step 1: A parametric sweep over the parameter f, where I probe the energy E. Step...
View ArticleSet solution of previous time step as initial condition
I want to export the Temperature solution of my model onto Matlab and set the entire Temperature matrix containing temperatures of all the domains as initial condition for next iteration. But I see...
View ArticleThe file increases in size every each run
I made one model and only change few parameters every time I run this model. I clear the solution from the previous study every time, but I noticed the file is taking more space. Why?
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Directivity at a Certain Direction
Hi all,For a far field domain antenna study, I can achieve the maximum directivity by typing emw.maxDdB in the expression of a global evaluation, which is in the and direction. But I need to get the...
View ArticleCombination of Computational Fluid Dynamics and Chemical Reaction
Hello guys,I am studying about microfluidic technology, so I would like to use the simulation for it.I want to handle two types of model - Computational fluid dynamics (CFD), especially Multi-phase...
View ArticleDielectric slab
Dears, I am biginner of COMSOL. I have some queries about dielectric slab. I am able to produce electomagnetic wave in 2D dielectric slab but unable to propagate in 3D dielectric slab. For reference i...
View ArticleCompletely wetted or non-wetted wall with phase field
Hey !I've been trying to make a simulation of completely wetted or non-wetted walls (theta_w=0 or theta_w=pi) with phase field but it's always diverging. Have you ever tried and/or manage to do so ?...
View ArticleWhere to find COMSOL 5.4 variable description with details?
Hi Everyone,I am trying to modify some predefined equations in COMSOL 5.4 using the equation view, but there are a lot more variables than I expected. I don't know what many do and the short...
View ArticleCompute Error: "No Such File or Directory"
I am tyring to compute a model and getting the error "No Such File or Directory". The model was built in COMSOL 5.2 and I am running 5.4. I am not sure where this directory issue is coming from. Thank...
View ArticleFailed to form solid object
Dear All, does anyone can help me with the following issue,I imported stl file (rock sample) into Mesh Part, then into geometry and when I try to convert to solid form I faced the following error -...
View ArticleFluid structure interaction for a membrane
Hello, Iam trying to simulate a expansion of the membrane with both end fixed Iam facing following issues in solving the model. 1) If i give inlet boundary condition as velocity /discharge /mass flow...
View ArticleTwo phase flow using phase filed method : filling of liquid through different...
Hello, I am simulating the channel filling of water . The channel dimension starts with 600 micron in width and reduces to 200 microns and then again increases to original dimension of 600 micron. I...
View ArticleDifficulty in selecting geometry for boundary condition in a magnetostrictive...
Hello everyone, I am working on a magnetostrictive model which is a solid cube and I want to apply periodicity as a boundary condition to vertex to the opposite vertex, edge to opposite edge, and face...
View ArticleSpecific absorption rate in comsol
Hello everyone,Please see attached file and help me to understand how should i calculate SAR for 1 gram or 10 gram like in CST (shown in the file) in COMSOL?Any help would be appreciatedThankyou
View Articlelaser
I want to model Laser cutting and Laser drilling using COMSOL Multiphysics can you please help me on the step by step approach of the Simulation.
View ArticleElecromagnet
I built one coil in Сomsol 5.2a as the Helmholtz coil and inserted an iron core in the middle of circle, but after starting the Study the magnetic lines do not pass through the core. How to include the...
View ArticleMeshing interpolated curves
I have a simulation where my geometry is an interpolated curve. The meshing for that feature is really fine and detailed:https://i.imgur.com/V8RDmKw.pngzoomed in:https://i.imgur.com/o7YLIr8.pngAre...
View ArticleCapacitance matrix - Singular matrix error
Hi,I am trying to find capacitance matrix for a simple 2D geometry of conductors over a ground plate. But it throws Singlualr matrix error.There seems to be a miskake in my terminal and ground setup....
View ArticleMatlab function
I have a couple of question;1-Is it necessary that the input arguments of MATLAB function should be equal in size? and also output argument when using Livelink MatlabIn this case, the sizes of the...
View ArticleDifference between MEF and EMW frequency study
There are two different physics interfaces Magnetic and Electric fields interface in ACDC module and Electromagnetic Fields, Frequency domain interface in RF module.As I understood from the manual,...
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