How to transmit solution data between two models?
Hello! How to transmit solution data between two models? I have set up two models as follows. 1. To solve u1 satisfied the PDE, D1(u1)=f1, in the first model; 2. to solve u2 satisfied the PDE,...
View Articlequestion about three dimension (3D) plasmonic waveguide
Hi everyone, Recently I have modeled a 3D plasmonic waveguide for calculating the transmission, utilizing boundary mode analysis and frequency analysis. The power flow distribution is fine (please see...
View Articlehalf cylinder
Hi, Can any one please help me how to draw half cylinder. I mean which is cut exactly in middle i.e. half of the diameter. I had already draw the cylinder, but I do not know how to cut into half. Thanks.
View Article"Normal" Reynolds number ; Constant temperature through tubes
Hello Model can be found: www.dropbox.com/sh/mvgwp1qbc0dcwa6/YhJhuLItkj My model of a shell and tube heat exchanger has a constant temperature-profile. It's possible that steady state inside the model...
View Articlecoupled PDEs
Hello, I want to find the profiles of two fields (u1(x,y) and u2(x,y)) on a 2d geometry with known boundary conditions that satisfy the following equation: [(u2y*u1x-u1y*u2x)^2]x +...
View ArticleFSI Module for blood vessel simulation
Hi, I'm trying to implement a very basic 2D axisymmetric model of a blood vessel (straight tube) using the FSI module as I'm interested in getting a wall deformation profile. The problem is that my...
View ArticleDifferences between the space dimension
Hi all, Trying to understand COMSOL better as I am a teaching assistant for a simulations class. Most of the time, i know which space dimension i should be using for my model. But for example, if i...
View ArticleMicrowave pulse duty cycle
Hi, Can anyone help me out to define pulse mode or duty cycle for microwave heating problem in COMSOL 4.3b version. In normal microwave we have ON and OFF type of power. In my problem microwave power...
View ArticleHow to enter a geometry information from a file
I have a geometry information (width, height), and corner locations of blocks in a xcel file. How do I import this information into COMSOL? Thanks
View ArticleHeat transfer physics for both fluids and solids with time dependent solver
Hi, I am stuck with my model that I try to couple three physics. I include electric current, creeping flow, and heat transfer in solids. Heat generates due to Joule heating inside of the fluid (defined...
View ArticleWhy the solution only saves result from last study step?
Hi, I have a time dependent problem to solve. Because at the start and ending stage of the simulation variables change more significantly, I decide to use several time dependent study steps, for the...
View ArticleDefine material property using analytical functions
Hi, everyone, As we know, Comsol allows using analytical functions of spatial coordinates to represent variable material properties on the domain of interest. I am wondering if the material property...
View ArticleMEMS Gyroscope Modelling Doubts
Hi all, I am Karthik. As a part of my Masters course, I need to do one mini project and I have chosen MEMS gyroscope. Eventhough my final realization is a ring based vibratory gyroscope, just to get...
View ArticleBug with Solidworks livelink in Comsol ?
Hi. We recently started using Comsol for Cathodic protection analysis and we are using Solidworks for modelling. In some of our models we get this issues that we loose the selections and need to...
View ArticleWater droplet falling through air on a structured surface
Hi, Im new to comsol. I was trying to model a water droplet falling onto a solid substrate. The droplet should fall through air and then i should be able to calculate contact angles at various...
View ArticleElectrostatics and Electric Circuit
I am relatively new to COMSOL. I am trying to simulate a two part problem. 1. An electric pole is placed underwater 2. A circuit is built around it to measure the voltage drop across a resistor The...
View ArticleMelting Front and Free Surface
Dear all, I'm currently attempting to build a model similar to the "Tin Melting Front" in the model library. This model describes the melting of a metal through the Stefan problem and models the...
View ArticleRigid-body Μodes
Hello guys. I am using Comsol more and more these days, so you will be hearing from me regularly from now on. I hope we'll have a nice chat. To the point now: In Eigenfrequency Analysis of a system, is...
View ArticleTurbulent air flow through a continuously variable transmission enclosure
Hi there, I am a student working on my senior ME project. I am hoping to model turbulent air flow through the casing of a CVT enclosure. The pulleys of the CVT will be rotating at the optimal engine...
View Articlestudies with multiples steps
Hi all, there is something so weird with my COMSOL 4.3, when I create a time dependent study with different steps the solution only represents the last step and It is not posible to change the time...
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