How to apply AC voltage on two capacitor plates.
Dear All Hope you will be fine. I am beginer in the comsol, i want to model the electric field in two parallel plate capacitor by applying AC voltage to it and to see the electric field. I don't know...
View ArticleDerivative with respect to parametric sweep Variable
Hello, I am having troubles to get a derivative of a Variable which does not directly depend on a sweep parameter. For Example: Variable: A1=intop1(rmm.Az)/Surface Now I define a sweep parameter called...
View ArticleBreakdown voltage of parallel capacitor.
Hi there. I am designing a simulation of the breakdown voltage of a parallel capacitor. So what I'm trying to figure out is, how the easiest way to to this is. For starters I guess it could be...
View Articleproblem in view
Dear all , I created a two coil system , primary with six number of turns and secondary with one turn , primary place at 0.4 m and secondary placed at 0.38 m , when i simulated before it is showing the...
View ArticleGraybody Radiation
Hi I am trying to model radiation between two parallel surfaces in the heat transfer with surface-to-surface radiation physics. I am currently using surface-to-surface radiation with user defined...
View ArticleDefining heat source correctly
I am busy modeling batteries that heat up during use, and an airflow over the batteries to cool them. Each battery produces 12W of heat, according to the manufacturer. I have simulated it as a 2D...
View ArticleSlip and No Slip
What is the difference between slip and no slip options in the boundary conditions of laminar flow. which will be a suitable option to choose for blood flow in capillaries.
View ArticleConjugate Heat Transfer
Hello! I am an undergraduate student working in my hands on project. I am a beginner in this software but basically what I would like to work on, is in a simulation involving heat transfer and fluid...
View ArticleImplimentation of equatuion
Hi, I want to implement "my own" physics into Comsol or change a physic. How can I do that? Thanks!
View Articlecoil voltage
Hi. I'm really new to COMSOL Multiphysics and I think I need some help. I have a coil and inside it an oscillating magnetized ribbon. I try to calculate the voltage induced in the coil by the magnetic...
View ArticleStarting simulations automatically via waiting list
Hi, does someone know if it's possible to start more than one simulation at once? Is there something like a waiting list on which I can put different models and then Comsol starts the second job...
View ArticleAccess to a function value in matlab
Hi, I am running a comsol model through matlab. This comsol model has a function El(t) that returns an output based on the value of t. I would like to have the results of this function stored in a...
View Articleflload, postinterp, posteval not working in matlab
Hi, I need to export data from a comsol model to matlab. So, I need the functions flload, postinterp, posteval. I tried to learn about flload in matlab R2009a, so I wrote "help flload" in command...
View ArticleSimulation error
Hi , I am getting this type of error whey i am trying to start simulation. "Variables property does not include all variables in Xmesh" Could anybody can give me any solution/ suggestion. Thank you...
View ArticleUsing deformation results as initial conditions for the next study
Hi all, I have a linear elastic model with a stationary study whereby I apply a boundary load and deform the model domain - this is simple and works fine. Next, I would like to use the deformed results...
View ArticleMagnetic force imposing on magnetic fluid in 3D magnetostatic field (no...
Hi Everyone I try to do with a simulation of magnetic fluid imposed on magnetic force in magnetostatic field (no currents), but the results show that there seems to be no magnetic force on magnetic...
View ArticleConjugate heat transfer Interface boundary condition
Hello All, I am new to COMSOL. I am trying to solve a 3-D conjugate heat transfer problem with volumetric heat generation in the solid domain. The problem is more like solving for a temperature profile...
View ArticleEquilibrium condition for an identity pair
Hi. I am new in COMSOL and I am checking for the software abilities. Currently I am using the identity pair in a mass transfer model. The idea is a fluid flowing on the surface of a slab, which is...
View Articlemagnetic field -problem with mesh in a frequency domain study
Hello, I have some convergence problem in my 3D study. I build a geophisycal magnetotelluric model, a stratified earth (layers at different electrical conductivity ). I will measure the impadance at...
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