Modelling nano particles in RFA of hepatic tumour
I am new to comsol. Facing problem to model nano particles in biotissue. Can anybody please tell me the approach to solve this problem.
View ArticleChanges in piezoelectric material parameters
Hello everyone, I am doing a simulation of piezoelectric materials. I want to know if the cutting angle of the piezoelectric material is set in the rotating coordinate system in COMSOL, will the...
View ArticleWhat is the differance between solving using modes and solving using input beam?
Hello, I have created 2D simulation of directional coupler, and I excite it using a beam from an input port. I know that in case of solving the problem using mode analisys - I am sepposed to get...
View ArticleHow to prescribe displacement amplitude
Hi allIs it possible to prescribe the displacement amplitude of a boundary in XYZ coordinate? For instance, in the attached file I try to change the amplitude by scaling the "Prescribed in y direction"...
View ArticleSolving coefficient form of PDE and laminar flow for a heat transfer problem
Hi everyone,I am trying to solve a multiphysics problem in a complicated 3D domain of fluid and and solid medium. Governing equations, solved for are Continuty, Momentum and a Modified Energy equation....
View ArticleCombustion of Rocket Propellant
I want to do combustion simulations of sandwich solid propellant. Previoulsy simulations are done in ANSYS Fluent, but for COMSOL I am wondering where to start. Can any one help me in this regard.
View ArticleInsolation analysis and temperature profile
Hi all, I'm new on this forum and I'm trying to figure out if COMSOL can help me in the study I'm doing.I have to analyze how the heat propagates inside a boulder. For doing this I separetely created a...
View ArticleLiveLink with Excel - extract data from an exiting Table
Hello,I am trying to extract data from the results and show it in excel. I followed the following procedure:In COMSOL I was able to define a table and save its content on an excel fileSaved the mph as...
View ArticleGraphing cut line of a solution divided by a point probe value
Good morning,Thank you in advance for any help you can provide.I have an EM simulation in which my region of interest is a cut line. I wish to plot to plot normE of the solution divided by the value of...
View Articlestationary study for a "Equilibrium Discharge Heat source" never converges
i tried a very simple model of "electric current" + "Heat transfer" in an argon medium, i added the "Equilibrium Discharge Heat source" to get the joule heating in the gas, the model boundaries are all...
View ArticleLarge Deformations by concentration influx
I am trying to model expansion of a thin film due to concentration influx. I have coupled concentration to Solid Mechanics using analogous thermal strain (both are volumetric expansions) The problem I...
View ArticleProblem: Material, Boundary Conditions, etc. change during Parametric Sweep
Hello thereI try to make a Parametric Sweep over the width/depth of some material elements(rectangles in different materials). Unfortunately, the sweep stops all the time and everything has changed:...
View ArticleEvaluating Volume in Livelink
HelloI am trying to use Livelink to create a geometry in Matlab which I will then run a model on later. To build my geometric sequence I need a way of accessing properties such as the total volume of...
View ArticleElasticity matrix and coupling matrix for polyamide
Hi,I need Elasticity matrix and coupling matrix for polyamide. Will appreciate supportthanks
View ArticleAttempt to evaluate nonintegral power of negative number error message
Hello comsol community,I am a bit struggling on this error message. I am relatively new to COMSOL. So not quite familiar with what went wrong. Any sort of comments and guidance will be much...
View ArticleUtilize the same Stationary solution multiple times.
Good day I want to use a stationary solution as the initial input for multiple time dependent steps, but I do not know how to. I'm actuallty confused by the options given.I can use one stationary...
View ArticleFlux Variables
Hi community,I would to know the differents concepts of flux variables. For example, what is the difference between "normal total heat flux" (32.701 W/m) and "internal normal conductive heat flux,...
View ArticleError when opening COMSOL
Hello, I recently encountered a problem while opening COMSOL multiphysics which gave me and error, stating that an unexpected error has occured and that I should look to the end of the log file.Here's...
View ArticlePlot new physical variables
Hi all,I am new to COMSOL and just studied the Plasmonic Wire Grating tutorial using Wave Optics model.The only variables plotted in the tutorial are the Electric field and the Transmittance,...
View ArticleHow to solve Laplacian equation in Converging-Diverging Nozzle
I am right now having a 2D C-D nozzle model with a flux dphi/dx=1 pn the left boundary. I used laplace equation under PDE solver tab to solve. By setting the left boundary to flux g=1 and leave all...
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