Laminar Flow & Transport of Diluted Species Feature
Hi you guys. I have questions about the Transport of Diluted Species module. My work is about simulation of oxygen concentration distribution in a micro fluidic device (micro well). In the well, there...
View ArticleSimple Livelink with Matlab example
Hello,Could someone please get me started with a really simple Livelink with Matlab example please? I am going through the tutorial examples but need a simpler example.Kind regards,Sinéad
View ArticleLoss in heat instead of heat flux at boundary?
Is there a way to simulate a defined loss in heat at a boundary? So instead of having W/(m^2K) you'd have J/(m^2K).Right now heat flux is the only time dependant variable that prevents my model from...
View ArticleMicrofluidic pipe outlet with free velocity profile?
Hello everyone,I am modeling the flow within a microfluidic system, let's just say it is a straight pipe for the purposes of the question. The direction of the flow could be towards either side of the...
View ArticleSetting flow/velocity halfway through pipe
Hello,I am running a simulation to estimate the pressure accross a complicated microfluidic network, but let's say it is a straght channel. I have experimental data of the fluid velocity at the center...
View ArticleHow to decrease slope of cell potential
I am running constant current simulations and have manipulated the parameters "Particle radius negative electrode""Particle radius positive electrode""Solid phase volume fraction positive...
View ArticleIncreasing magnetic field area.
I need to perform particle tracking due to magnetic field. My magnet has a remanant flux density of 1.5 in x,y,z direction. Particles has relative permeability of 4.1. I am using 1. Magnetic filed no...
View ArticleUsing Results as Material Parameters - Convergence
Hello everyone,I have an issue with a 2D axisymmetric model, although this same question applies to any model in COMSOL. Basically, I'm calculating gas evolution from a current distribution, and using...
View ArticleShaker comparison
Hi all,I would like to compare the displacement of different model at their eigenfrequency. I have done a eigrenfrequency analysis and want to apply thre respective eigenfrequency to the model. As the...
View ArticlePassing on result of one study to another
I want to simulate 3 studies a) magnetic filed (stationary) b)laminar flow (stationary) c) Particle tracing due to fluid flow (time dependent) I divided it into two studies Study 1- Step 1 Magnetic...
View ArticleSimple ball compression with contact
Hello everyone,I am trying to solve a simple Solid Mechanics model in which I want to compress a ball in between two plates. The ball and plates are in contact, but for some reason the model takes...
View ArticleIterate over ray dataset/Access ray by index
I am trying to analyze the results of my ray-tracing simulation in Comsol itself (i.e. not relying on "Export" nodes). As part of my analysis, I need a table where each row corresponds to a ray, and...
View ArticleCoordinate Dependant Variables and Deformation
Hi there. I've had a bit of a look around and I couldn't find an answer to a relatively simple underlying part of COMSOL's variables.If I define a load (in this case a volume force) on a mesh...
View Articlecomsol doesn't pick Lorentz force for structural step
Hello! I am experience a problem while picking Lorentz force from previous study.I have a coil (domain 4) where i will ramp the current and a steel region (domains 2,5, 10, 11) where I'm trying to find...
View ArticleSimulating Ion Beam Focussing by electrodes
Hello, I am modelling a system of three electrostatic electrodes to focus an Ar+ Ion beam. By using the "Einzel Lens" tutorial, I get good results if I choose electrons or positrons as Particles. But...
View ArticleAxial Flux motor
The below post is related to an archived discussion[start here]I am going for implementing Axial Flux motor for a mini wind turbine station but I need to model AFPM in comsol first. Can anyone help me?...
View ArticleBreakdown simulation in Argon plasma
Hello,I would like to do a simple breakdown model in Ar or He. How would I go about doing this. I know how to set up a model I'm just not sure how to get results of when breakdown occurs?Any help would...
View ArticleHow to run a Gaussian beam in 3D
Hello, I would like to run a Gaussian beam in 3 Dimensions. I know that this can be done in the Physics model emfd. However I am cnofused about how to implement it. Would I modify a port? Or would I...
View ArticleFrequency Domain Analysis of Cantilever beams
How to model the Cantilever beam to extract the Natural frequency and its harmonics in Multpysics platfom.Can suggest me which study yields best possible result either Eigen frequency or Frequency...
View ArticleLevitating Ring Magnet
Hello everyone i am new to COMSOL and trying to plot distribution of force on a permanent ring magnet levitating over another at certain height, i am using AC/DC module =>magnetic field no currents...
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