Coupling mixture model and phase field
Hi,We are trying to couple mixture model and Laminar two phase flow, phase field method. But the initial values which I give in both the models doesn't match and the solutions doesn't progress.As an...
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Step function for temperature equation
I wish to solve a temperature equation where the thermal diffusivity is a step function. If I could get a way of inputting this it would be brilliant;Ideally I would like something like:CheersMat
View ArticleFluid Structure interaction
can someone help me to scale down the inbuild model named vibrating beam in the fluid flow.changing dimentions and properties results in the error and the solution is not converging.
View ArticleNatural Convection Cooling of a Vacuum Flask
I found a mistake in the example named "Natural Convection Cooling of a Vacuum Flask.pdf", in Page 21, the option of "add material (mat7) "should be in comp2 not in comp1. Maybe my discovery would help...
View ArticleMaking Simple geometry
Hello. I am working on Mechanical model. I really want to simple model in the figure. I tried to cut that line or applied some other options, but it is difficult to me. Is there anyway to make this...
View ArticleWhere to find general examples of variables
Hello there!I am trying to follow this example:https://www.comsol.com/blogs/computing-porosity-and-permeability-in-porous-media-with-a-submodel/I am having trouble as I don't know how to defind L or...
View ArticleHow to implement Arc-length method into COMSOL?
Dear all,I want to use arc-length method to solve tensile softening problems, but COMSOL does not have this method yet. Althrough a COMSOL BLOG provided an alternative method to solve the softening...
View ArticleSkin Stretching Model
Hello,I am trying to model a time dependent stretching of the stratum corneum by applying a boundary load to either side of the SC to see how it affects the solid mechanics of skin. This said, COMSOL...
View ArticlePlasticity in a Time-Dependent Study with Uniaxial Stress Strain Relation
Hello,I am working on a model using NiTi, also referred to as Nitinol. I want to use the plasticity node to effectively represent the "twinning" or apparent speudoplasticity of the material.I am trying...
View ArticleSurface density current in RF transient simulation
Does anyone know how Comsol defines surface density current in RF transient simulation?Many thanks in advance.
View ArticleTime Dependent Study Error
Hello Everyone,I am very new to this comsol software. I am just trying to simualte a very basic model of electromagnet under the "Time Dependent Study" analysis. I have created a cylindrical coil core...
View ArticleParticle Trajectories 3D Mirror plot
I have successfully plotted particle trajectories in 3D and I would like to mirror the results using the Mirror Plot 3D function, however when I do this only the geometry gets mirrored but not the...
View ArticleInfinite Pressure Pulse Wave Velocity
Dear Comsol Users,I am interested in the pulse wave propagation in interaction with narrowings in a tube including different material properties. So I builded a 2D axissymetric Fluid Structure...
View ArticleRequest for help
hello I found a problem during simulation in the comsol .in the party of materials. is possible to control the percentage of the material element for example if I enter an alloy AlCoNi in a piece. 10%...
View ArticleGauge Fixing problem
Hello everyone,I have a problem that you may have its solution and make life easier for me. I have a EM simulation which is an armature in a coil when I solve it without Gauge Fixing, it works fine and...
View ArticleClosed system ---> Column + Vessel
Dear All,I would like to created a system where I have a vessel that introduces a chemical species in a saturated column and the output of this chemical species at the column is reintroduce into the...
View ArticleVariable for Young's Modulus from Uniaxial Stress Strain Curve
Hello,I am trying to create a 3D time dependent study based off of the tutorial Elastoplastic Analysis of Holed Plate.The hardening function is defined as:...
View Article3D Model Help
Hi All,I have this 3D model that I'd like to find the magnetic field for. It works in a Stationary study, but when I try to include a time dependence I get an issue saying "Failed to find consistent...
View ArticleSOLVING
Some problems do take lot of time to solve. It nearly takes more than a day. I dont know why. I use comsol version5.1, 32 bit OS. And I have a RAM of 4 GB. I wanted to simulate the problem using...
View ArticleApply AC Signal to a geometry
Hi,I have created a cube and I have to find voltage variation at differnet faces when applied an ac signal to one of its faces. I tried with one face of cube delivered with DC voltage and another face...
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