Simulating pull-in with contact pair
Hi everyone, I followed the model name "electrostatically actuated cantilever" in model library to build my own model - an RF MEMS shunt switch with fixed fixed beam. In the "electrostatically actuated...
View ArticleHeat Transfer
Actually, I need to give boundary condition to one of the part of my system. At that part, I will use cryocooler of capacity 1 W at 4.2 K, how can I give this boundary condition to particular part. My...
View ArticleSpiral 3D inductor Geometry
Hello I am trying to simulate a 3D spiral inductor, but I cannot find the right geometric shapes given in Comsol 4.3a to build this coil. I have attached an image of the intended coil I want to build I...
View ArticleMultiple concentration step function
Hi, Have a great day. I am a new user of comsol 3.5 version, currently, I am working with chronoamperometry and I am trying to simulate that one using comsol by multiple concentration step functions....
View ArticleThermal Stress Evaluation without Solving Heat Transfer Physics
I am trying to generate Thermal Stress about the domain of a spherical body with a coupled 'Solid Mechanics' and 'Heat Transfer in Solids' physics. Instead of actually solving the heat transfer...
View Articlethe free vibration of the cantilever
Hi everyone: The initial displacement D=1.05mm, is placed on the end of the cantilever beam, to solve the velocity response of the beam end. First, I select space dimension 2D, and add physics Beam,...
View ArticlePermanent Magnet simulation
Hello Everybody, I have posted before and I am doing it again though I am little bit on the knowledgable side. I am trying to simulate a permanent magnet using the Br option in the Magnetic Field, No...
View ArticleInductance of a parallel plate transmission line
I'm trying the find the lumped element parameters of a parallel plate transmission line. I've been using the "energy method" described on pages 87 and 88 of the AC/DC Module Users Guide. I used the...
View Articlehow to plot graph b/w preeure vs displacement
i need procedure how to plot grap for pressure sensor and how to observe pressure and displacement value......
View ArticleThermal expansion model
I built a thermal expansion model, at temperature 700K. I want to examine the stress distritubion of the cross-section inside the expanded sample, how do I do that? Also, is there a way to visualize...
View ArticleMaxwell Stress Tensor
Hello all, I'm new to Comsol and Im having a little difficulty getting my head around how the Maxwell Stress Tensor operates. I understand its operation when applied to parallel wires (Like in the...
View ArticleModeling a water turbine using actuator disc theory
Hello, I'm trying to model the flow in a (simplified) tidal channel. For now there is one turbine placed in the channels (this might be extended to two or more). With this model I hope to study the...
View ArticleWhat is the method to calculate error?
I was fooling around with Comsol Multiphysics. I have found very interesting feature included in Comsol. Recently I was testing second harmonic generation module in it. The error is calculated and...
View ArticleSliding boundary conditions in Solid Mechanics
Hi! I am trying to model a sliding boundary condition between to elastic bodies. By sliding condition here I mean, that the DIFFERENCE between the displacement fileds should always be zero in the...
View ArticleTime Dependent Study of an Airfoil- Lift Coefficient
Hi, I am trying to learn how to calculation the lift and drag coefficient of an airfoil running a time-dependent study. Below are the boundary conditions. Re ~2000 Inlet- Inlet U*step1(t[1/s]) Top and...
View ArticleWall condition (no slip or sliding), fluid outlet condition
Hi all, I am modeling a sphere moving in a moving laminar fluid domain (2D). The sphere is moved by the motion of the fluid, through boundary load on the sphere surface. I am wondering what kind of...
View ArticleCorona discharge, Plasma module
Hi everyone What I'm trying to do right now is to simulate corona discharge with "DC discharge" branch of the plasma module. There are these two boundary conditions called "Electron outlet" and...
View ArticleDrag Calculation in Ahmed Body tutorial
Greetings Folks, I was going through the ahmed body tutorial. Turbulen k-e model has been used to solve the problem. In the tutorial pdf, drag coefficient value from simulation has been compared with...
View ArticleDrag Calculation in Ahmed Body tutorial
Greetings Folks, I was going through the ahmed body tutorial. Turbulen k-e model has been used to solve the problem. In the tutorial pdf, drag coefficient value from simulation has been compared with...
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