Meshing over large changes in scale
Hi Everyone, I am trying to mesh a geometry which has a large difference in scale between components (from mm to nm scales). The free mesher always fails with Error: 4029 Failed to insert point. - x...
View ArticleHT-block sliding with radiation
Hi Ivar I wanted to once again thanks for your help. so I did the HT-block sliding in 3D and I got what I wanted now I need to add radiation to it. I could add radiation and detect heat flux radiosity...
View ArticleAttempting to find total drag force on an object
I'm fairly new to COMSOL and haven't been able to find any really detailed guides on how to go about this. I've currently got two problems that I can't figure out how to solve. 1) When I solve the...
View ArticleAsk the question about the particle tracing module.
I have a question when I have used particle tracing module(fpt). Because I try to utilize the condition of Particle-Particle Interaction. I don’t know how to define the interaction force of particle. E...
View ArticleFluid flow channel in cantilever beam
Hello, My model is the following: a cantilever beam has one longitudinal channel containing a fluid flow. My goal is to find the effects of the fluid flow (viscosity, velocity, size of the channel) on...
View Articlesimulating moving piston
There are 4 components in my model; blood, blood vessel, brain tissue, and piston Blood and blood vessel are surrounded by brain tissue and piston crushes down brain tissue with 1mm depth. When I used...
View Articlecurved beam
Hi, How can I change the radius of curvature of a reinforced concrete straight beam inorder to come up with a curved beam?
View ArticleSimulating 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 ArticleTime Dependent Studies
Hi, I'm setting up a model with a lot of my own equations, and the whole thing is dependent on time. How do I refer to results from a previous/particular time step in my equations? Thanks, Rich
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 Article2D to 3D
Hey all, I successfully designed a spiral structure in 2d and got the desired results. Now I wanna transfer my model to 3d. I read few threads and tried to export my 2d file, When I import it in 3d ,...
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 ArticleShock Tube Initial coditions
Hello. My question is in relation to the shock tube model, I tried changing the initial conditions of pressure and density generating two steps for each, but in doing so the solution no longer...
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 ArticleGraph vs Phase with Frequency Domain Solver?
Hello, Im sure this is pretty simple, but im still learning COMSOL 4.1. Im using a frequency domain solver, and I have a solution, I can build a video across a full harmonic, with the dynamic data...
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