PDE - Contact Resistance
Hi Everyone, I am wondering how to implement electrical or thermal contact resistance when using the PDE physics. I am using the PDE coefficient form to model thermoelectric effects at a...
View ArticleCOMSOL Releases COMSOL Multiphysics version 4.3a
We at COMSOL are proud to introduce version 4.3a of COMSOL Multiphysics to the COMSOL community See: http://www.comsol.com/products/4.3a/ This introduces: * LiveLink™ for Excel® * LiveLink™ for Solid...
View ArticleHow to fix the error "Out of memory in stationary solver."
hi ! I'm Lam, I construct a model.when i play function 'compute' in STUDY and see error "Out of memory in stationary solver." please show me how to fix it. thank you for comment.
View ArticleComsol 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 ArticleFrequency Domain Study
Hi, I'm starting to use Comsol and I'm trying to do a frequency domain study on a poroelastic material subject to a sinusoidal load which frequency is in the range 1 to 100 Hz. My problem is that I...
View Articlehighly conductive layer
Hi, I tried to do a simple transient heat transfer model as follows: one model with a thin solid domain on top of a thick domain and another model with highly conductive layer on thick domain. The...
View ArticleFilling an "empty" space
Hello, I'm new to Comsol and a novice at SW2012 It seems in order to model fluid flow through a heat exchanger, the volume filled with fluid (helium in this case) must be included in the model as a...
View ArticleNo eigenpair solution selected
I am getting this error message - "No eigenpair solution selected " when I hit compute. Can someone please help me solve it. Thanks, Rohan
View Articleerror in stationary solver
I am modeling 3d capacitive accelometer , during simulation process i am getting the error :"out of memory in stationary solver". kindly can any one help me out .
View ArticleNon-isothermal flow Vs conjugated Heat transfer
Hello all My problem is like flow through a pipe surrounded by a sold domain. Outside the pipe there is a small domain(inside the solid domain) maintained at constant temperature of -10 deg C and water...
View ArticleHow to Draw a Bowtie antenna in Comsol 4.3a
Dear all, I want to know how to draw a bowtie antenna in comsol 4.0 or above. I tried to draw a polygon and then extrude it, But it do'nt work. In other words, I want to draw a triangluar prism in...
View ArticleWhy does my parametric sweep slow down?
When doing nested parametric sweeps, they start off fast but slow down to a crawl eventually. What am I doing wrong here? Is there a faster way of doing this? Seems it has little to do with my computer...
View ArticleStirling Engine
Hi, I am trying to simulate a stirling engine cycle and my goal is to plot its pressure and volume diagram and possibly its temperature and entropy diagram. I've explored the website and saw this paper...
View Articlemomentum transport and mass transports coupled simulation using matlab script
Hello All~ I conduct momentum transport and mass transports coupled simulation using matlab script~ but i have some problems~ when i simulated this topic, always failed to find a solutions~...
View ArticleNumber of degrees of freedom solved for: 0.
Hello all, When I try to use 4.0, I met with this problem when solving. Does anyone know how to fix this? I think it might be that I did not add the mesh to the solver, which is different from 3.5a....
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 ArticleDeformation of liquid droplet
I am new to COMSOL, so I am referencing a work on deformation of liquid droplet impacting a solid surface. I tried to recreate the same model as that work. But I ran into several problems. As I tracked...
View Articlehow to understand the code of comsol in matlab editor.
how can i understand the code of programme that is developed with the help of COMSOL and saved as m file and now it is obtained in COMSOL MATLAB editor. how to get to know the curve it shows belongs to...
View ArticleCan someone help me understand this error?
I need help understanding the cause of the following error: "Failed to compute elastoplastic strain variables" I have received this error numerous times in a few different structural models where I am...
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