Permanent 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 ArticleImage to model, Image to material!!!
Hello everyone, Am trying to use an image function for an electrostatic problem. While trying to define the relative permitivity for the image i made use of analytical function as...
View ArticleFluid Compression
Hi, I built a simple model for fluid compression in 2D FSI model. A squre is build as fluid, and three sides of it are defined as wall, the other side in contacted with a PDMS membrane. There is a...
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 ArticleRF: Emitting planar light from PORT (3D)
Hello my friends. I am trying to construct a model where the port is placed along the y,z-axis and emits light in the x-direction. However, I do not want to just emit light normal to port's surface, ie...
View Article"Out of memory"
Hello, I have this system - a fiber optic cable glued on a concrete beam -, which I would like to calculate with Comsol. When I use a Finer mesh (which brings c.a. 96 000 elements) everything goes...
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...
View ArticlePD in insulation
Hello I want model the partial discharge (PD) in insulation , my geometry is insulation( rectangular) between two electrode with one void inside the insulation. I want model PD inside the void. or...
View ArticleLaminar inflow into a turbulent domain
I have a 3D geometry in which turbulent flow develops downstream, but the inlet to the domain is a pipe that has laminar inflow. The turbulence physics interfaces do not have a laminar inflow boundary...
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