Importing solidwork data into comsol
Hi there I have a problem in importing solidwork products into comsol where the measurements (in meters) are changed in big amount. As experienced, i import an image of dimension 10x10x25 in meters...
View Articleappropriate boundary layer properties, k-e turbulence model
Hello, I have been trying to simulate fluid flow thorugh a certain design, and I'm starting with half a cylinder to which I'll add geometric complexity. The model does solve. However, the walls don't...
View Article3D natural convection problem
Hi, I am working with 3D natural convection problem but it is hard to converge. There was no problem with 2D. Similar to 2D problem, in brief, I added volume force term to bousinessque approximation...
View ArticleChanging the material's Phase (state)
Hi, I am working on laser machining of metals and I am trying to model the process by COMSOL. What I have done is thermal modelling which shows the temperature distribution in the sample. I am...
View ArticleInertial Focusing
I want to get the projectile of microspheresc in microfluidic chip. I am trying to get a complete solution to Navier and Stokes equations at low (unity) Reynold number. (viscous and inertial ). is...
View ArticleHelix with a non-circular cross-section
Hi all, I'm working with designing spiral microfluidics channels that radiate outwards, with the Radius Of Curvature changing over time, ideally every 180 degree turn of the channel or maybe with a...
View ArticleModeling evaporation of water. Need boundary condition to vary in space.
I am trying to build a 2D model of air flowing over a thin film of water. In this model there is a constant heat flux on the bottom boundary of the thin water domain. The goal is to track how much...
View ArticleThree phase flow problem
I'm getting the following errors when I try simulating droplet separation process. I've attached my file for reference. Failed to find consistent initial values. Attempt to evaluate real square root of...
View ArticleHow to change the resin flow direction of a model?
I am trying to use the model of Permeability Estimation Application ID: 33331 , As we know, in this example, the direction of the resin flow is from bottom up, and if I want to change the direciton of...
View Articleparameter sweep for derived values in particle tracing module
Hi, thanks for reading my problem: In the particle tracing module, I set the "global evaluation" using fpt.Nsel to calculate the particle number passing through a boundary. Now I try to use parameter...
View ArticleCompute one physics without changing another
Hi Comsol users, I am modeling a laminar two-phase flow with some transport of diluted species. Between each computation, I change some parameters in the transport of diluted species but I do not...
View Articlei am a new user of comsol
i am a new user of comsol, please help me to use it for simulate gaz flow in microchanels
View ArticleWhich physics should I use?
Hello, I'm fairly new to and unfamiliar with COMSOL and would like to get some input from those more experienced on where to go with my microfluidic device model. The model consists of two chambers...
View ArticleConvergence issues with boundary layer mesh
Hello! I am currently doing my first big projekt in comsol in which I'm trying to simulate a cooling system using the conjugate heat transfer module. I'm starting out with laminar flow for the cooling...
View ArticleHow to calculate the permeability on the model of a fiber tow
I set up a model of a fiber tow, but I do not know how to choose the "study" to start simulation and calculate the permeability. Thanks a lot!
View ArticleHigh pressure and recirculations using Laminar Two-phase flow module
Hi, I am trying to use the Laminar two-phase flow, phase field module to simulate the process using water to displace gas. The geometry is shown in the attached figure, 50 microns in height and 10...
View ArticleMeshing error when changing length of model - Internal error in boundary...
Hello, I'm using microfluidics to model a 3-layer device - when the device is 10mm in length, the physics-controlled mesh works fine, but when I lengthen the device (which I need to be able to do), I...
View Articleadditive manufacturing (FDM) silumation by Comsole
Hi there Recently i strated to work with comsole multiphysics for FDM simulation ( FUSED DEPOSITION MODELING). My objectif is to simulate deposition of a melted polymer, and measuring different...
View Articlesimulation problem
Hello, I'm running a simulation for 60 ms but my simulation is not running after 10.85 ms. Could anyone help? Regards, Ganesh
View ArticleImporting solidwork data into comsol
Hi there I have a problem in importing solidwork products into comsol where the measurements (in meters) are changed in big amount. As experienced, i import an image of dimension 10x10x25 in meters...
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