Generate values at imported coordinates (xyz)
Hi there,I have a simple model with a few cylinders on top of each other, each made up of a specific material. I also have a .txt file that specifies some 100 points by their x-, y-, and z-coordinates...
View ArticleNonlinear Cantilever System
Can any one help me with a comsol file for bistable cantilever or Nonlinear cantilever system or Nonlinear bistable energy harvester dynamical system or Magneticaly coupled cantilever system something...
View ArticleElectric charge much lower than expected in plate capacitor
Hi there,the charge I get from global evaluation is much lower than expected on my terminals.My model is a bending beam, which should touch the bottom of a cavity by electrostatic attraction. I started...
View ArticleContinuous Heat Transfer in a Section of Part
I am working on research where I need to model part of a microfluidic chip. The overall chip measures 6mmx6mmx1mm. The part of the chip I need to model is the center 1mmx1mmx1mm. For the heat transfer...
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Parametric Sweep and Exporting data
I'm currently running a relative simpel thermal model that, effectivly, only consists of an heater with a constant temperature in the middle of a block (solid) with an constant initial temperate. The...
View ArticleControlling Element Growth
Hi,I am developing a reaction-diiffusion model in a deforming mesh, and am looking to couple the local concentration of a species with an increase in element size where the species is present. Upon...
View ArticleForgetting mesh but still compute
Hello COMSOLWhen i use AC/DC to compute the magnetic field, i forgot meshing one part of the permanent magnet, but the study can be computed without errors.By checking the results, i found the part...
View ArticleAcoustic thermal coupling
How to couple the acoustic and heat transfer modules to make the sound absorption coefficient of a structure at different temperatures?Can only thermoviscous acoustics be used?
View ArticleSimulate an optical fiber with pressure applied
Hi there,I am a beginner with Comsol and I want to simulate the effect of pressure on the effective index of the fundamental mode of an optical fiber. I have created a 2d model to simulate applying a...
View ArticleTwo- Phase Laminar Flow: Phase Field Method - Vanishing Droplet
I am using the Phase Field Method to simulate a micro-sized oil droplet in water (that should float up due to its lower density). My model works fine when the droplet is mm sized; however, as I reduce...
View ArticleLevel Set Method
Hello, I am using Level Set method to track the motion of molten pool. The solid melts on heating, and I want to see the motion of the pool.I wanted to know how do you use level set method ?There...
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How to create a partially transparent 3D plot?
I would like visualize a calculated quantity in a similar way as it is done for the quantities "C" and "I" in the plots below. Is there a clever way to do this with COMSOL?
View ArticleGetting state-space matrices from acoustic model
Hi all,I am trying to obtain the state-space description for a simple acoustic model of a duct using the mphstate command in LiveLink with MATLAB. I would like to get the state-space model that...
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How do I find the name of the terms in the PDE equation?
How do I find the name of the I,K, F term from the PDE below?
View ArticleHeat transfer model with 2 compoents or 1 component
Dear Comsol engineers,I have questions on 2 heat transfer tutorial models as follows.Natural Convection Cooling of a Vacuum Flask (Time-dependent):...
View ArticleDipole Magnet
Dear all,I am a new COMSOL user and I would like to simulate a bended dipole magnet (or at least a dipole magnet) which is not made of permanent magnets. Can someone help me do this or tell me how to...
View ArticleCalculation of eigenfrequencies as a function of temperature
Hi,I'm currenty trying to model the eigenfrequencies of a thin cylinder ansiotropic silicon cylinder as a fucntion of temperature in COMSOL 5.3a.I have measured data for the material properites of the...
View ArticleMultiple Level Sets in One Model
Hi,I am working on a galvanic corrosion model in COMSOL. I have built two different corrosion models based on the in-built application models that are mentioned below-Corrosion with deposition of...
View ArticleSolving fluid flow with solid/fluid domain
I was trying to do a weld pool model in comsol and i defined the viscosity of a metal to be 10^5 when the temperature is below the melting point and 0.001 when the material melts. long story short,...
View ArticleNeed model shared in this closed thread
The below post is related to an archived discussion[start here] Hi,I have to simulate the time taken for a particle in a fluid flow to pass through a constrictioon. This archived discussion is about a...
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