Does anybody know how I can get the continuous contours of radiation...
The intensity of each ray in RayOptics module of COMSOL is easily obtained after ray tracing. I need to find the radiation intensity in the mesh points which would be related to all the rays crossing a...
View Articlehow to use pervious layer？
Simulating the seepage of the slope, the boundary condition of the downstream overflow surface is to use the boundary of the permeable layer, how to set it?
View ArticleChanging permability in each element as function of particles - but how ?
Hi,I'm pretty hardstuck here on simulating a filter. The case: Each time a particle goes through the porous media, the permability should increase by a factor of 2 or more in the given element for...
View ArticleSolving Volterra integral equation
HiI am hoping to use COMSOL to solve a Volterra integral equation, is this possible? If so, how do I go about doing this?ThanksLauren
View ArticleImplementing General Navier Boundary Condition for droplet generation in...
Hello everyone!I would like to know how can I change/adapt the pre-existing boundary conditions on COMSOL to this General Navier Boundary Condition (GNBC) as I am working with a moving contact line...
View ArticleCoupling two components in COMSOL in a custom way
I have a subsystem that uses movements to produce electricity and I can solve it correctly by using Magnetic Fields (mf) interface. This subsystem acts as a damper for my system which is a vibration...
View ArticleEdge Effect in Electrodes Metal Contacts
Hello,I am using the Semiconductor module of COMSOL 4.4. I am modeling two electrodes over a semiconductor substrate. I applied a bias voltage to the electrodes, and I want to see the electric field...
View ArticleClik here to view.
Inconsistent Potential Over a Cylindrical Surface
Hi,I made the following construction in COMSOL (This is a cut):Two cylinders, the inner one in the middle is a solid cylindrical conductor. The thick outer cylindrical shell, along with the two small...
View Articlewhy does changing semi-infinite air layer thickness affect reflectance result...
I am trying to simulate the reflectance/absorptance of a metallic grating. The system consists of rectangular Au grating, with a thin polymer layer on top. Above the polymer is air. I have attached the...
View ArticleHow to apply CFD data into COMSOL geometry
Hello! We are going to study acoustics with CFD data. (temperature, reaction rate etc.) We are completed importing CFD data into comsol interpolation function. (Model...
View ArticleHow to solve perfectly matched layer and find the confinement light in...
I am working on a optical core-cladding design and try to analyze the mode analysis, so that find the confinement light which is passed in the core region. In 5.3a version, mesh isn't working with...
View ArticleNon-isothermal fluid flow
Hello everyone,I am currently stuck on a convergence issue ... I am trying to model a pipe with molten salt flowing in it. The pipe is heated thanks to an external thermal flux.I searched quite a lot...
View ArticleTHIS FRIDAY, September 6th: Early Bird Registration Savings for COMSOL...
Hello!This Friday, September 6th is the early bird savings deadline for the COMSOL Conference 2019 Boston. Take advantage of this opportunity and experience the COMSOL Conference.Conference Highlights:...
View ArticleHow to calculate entrance length in comsol
hiI have a microchannel with dimensions (1mm x 1mm x 5m), with water flowing in it. I need to find the hydrodynamic entrance length for a given velocity (or flow rate) in comsol. In theory, we have the...
View ArticleStatic magnetic field simulation of permanent magnets
I made a two-dimensional permanent magnet simulation. My simulation results only have a picture of magnetic flux density. I want to know if there are other pictures such as magnetic lines. Thank you!
View ArticleCOMSOL + Python
Dear COMSOL developers,I'm also one of the people desperately waiting for a Python interface... could anyone from the COMSOL team please explain why there is nothing planned (despite many people asking...
View ArticleNear field and Ext&Sca cross sections of hollow nanosphere.
Hi everybody,I would like to simulate the near field, and ext and sca cross sections of an hollow gold nanosphere, I am struggling to get physically reliable results. I am using the EMW physics, with...
View ArticleHow to do Position Dependent Concentration for TDS in COMSOL?
In COMSOL, I have a flat plate with an irregular surface. Flux of a dilute species is occurring across the irregular surface boundary (in 2D) and I'm looking to define the concentration of the dilute...
View ArticleCalculate time derivative of a variable that is stored by the Previous Solution
Dear all:I read and followed the BLOG"Using the Previous Solution Operator in Transient Modeling". However, I encountered an issue about this approach when I was trying to calculate the time derivative...
View ArticleNormal and shear stresses visualization after solution
Hello, How can I plot normal and shear stresses (sigma x, sigma y and sigma xy) instead of the automatica plotting of von mises stress?Bikash
View Article