Comsol not following ideal gas law or conservation of mass
Hello, I am currently working on modeling a high temperature hydrogen heat exchanger. I decided to start as simple as possible and just model the heat transfer into an axi-symmetric tube of hydrogen...
View Articlecomplexity of the model
hi, i m modelling a 3d capacitive comb drive acclerometer, wen i mesh the model it shows " out of memory in mesh processing" hw to resolve dis error n cud u tel me hw the complexity of d model can be...
View ArticleElectric Field in an object place in an EM field
Hi, I am quite new to COMSOL and with some help from tutorials I have built this 3D model where a cylinder is placed in the electric field radiated by a dipole antenna. To calculate the Electric field...
View ArticleMagnetic Fields, No Current
Hi everyone, So I've been trying for a while now to bypass the problem of creating an external magnetic field in *other* AC/DC modules; but now I see that in the MFNC there are two options: External...
View Articlefemur modeling
Hi! I am building a model of femur(thigh bone) and aim at studying their stress and strain distribution on applying a pint load.I have built the model but it doesn't seem to compute,and i can't figure...
View ArticleHeat Generation for a Specified Time
Hello all, I have a model in which I have two heat sources, one of which starts at the beginning of the simulation, and the other is controlled (turned on) by a temperature probe. Is there any way to...
View ArticleTime Dependent study
I am working on simulation of Time dependent study of wire in a tube furnace. i am using fluid structure interaction an heat transfer in fluids. My objective is to view temperature profile by time...
View ArticleAcoustic Band Structure in 2d
Hi Folks - Ive posted a couple of questions to some related discussion but it looks like they haven't been visited in a while so I thought I would make a new discussion group. I am interested in...
View ArticleHeat Pipe on a Heatsink
I watched the tutorial for Heatsink Analysis. I was wondering if we can develop the model by adding a heat pipe. I was told that it needs to be developed as a porous region but how the -thermodynamic...
View ArticleRecoverable error in residual, but solver could not recover.
Recoverable error in residual, but solver could not recover. What is the meaning of this error ?
View ArticleNatural Heat Convection - Solution not converged
I am trying to solve a simple problem of natural heat convection in water. It is a 2D problem . Two faces are kept at 300K and 310 K. Dimensions are 1 and .6 m . I have connected both heat and flow...
View Articleimport a bmp image into COMSOL geometry
Hey, as stated in this webpage: http://www.comsol.com/products/formats/ Comsol can both read and write few types of images. However, when I tried to import a bmp image as my structure for flow...
View ArticlePiezoelectric coupled with a shunt circuit for vibration damping
Hi, everyone! I am simulating the effect of a shunt circuit on the vibration of a piezoelectric device. Theoretically, with a shunt circuit connected (a resistor and a inductor in parallel with the...
View Articlepore scale model:autocad import
I have created a model in autocad. I wish to simulate fluid flow in it(a porous media). it is a mdoel of grain particles. the problem is that at the import stage,i am getting error message that the...
View Articlequestion regarding PDE and MEMS module
I would like to solve some piezoelectric problems, but I do not currently have MEMS module. I do have ac/dc module and the structural mechanics module that came with the software. i want to attempt...
View ArticleTurbulence model of hydraulic valve
Hello everybody I really hope you can help me with this:-) I'm currently trying to simulate a flow of hydraulic oil through a valve however, I keep getting the following error: Failed to find a...
View ArticleAverage in a circle line
Can anyone help me with the problem? I have a circle plane with a radius of 1. The current model can calculate the concentration in each point. Now I want to know the average concentration in the...
View ArticleCOMSOL solver control
Hi, I am looking at a problem that solves physics at two different time scales. Basically, I want to do the following At a coarser time scale I want to solve a few partial differential equations...
View Article[Solved] Selection Left Click
Hello community, I am faced with a strange problem. I just updated to Comsol 4.3 after using 4.2a for a long time. But it seems I can't left-click on an object to select it anymore. I don't know...
View ArticleHow to set materials to geometric objects using MatLab?
Hi, I am quiet new to Comsol. I am activating Comsol server via Matlab interface. I build everything using Matlab commands (LiveLink for Matlab). I am modeling a system of one object (solid) inside...
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