Error from the Modal Frequency Response analysis
Dear all, I am trying the Modal Frequency Response analysis tutorial with the elbow bracket example in the Model Library. However, if I try to run the tutorial model file for modal frequency response...
View Articlesine excitation
Hi all. I am performing a 2D frequency analysis in the Structural Mechanics Module. I want to apply a prescribed displacement on the left boundary and to see which waves propagate inside the medium....
View Articlehow to set up the ions in water dans my nano-fluidics
hi everyone, I'm trying to simulate the nanofluidics covered by a layer of SiO2 of which the thickness is about 50nm. In the nanofluidicsm there is water or other liquid. First of all, I set the...
View Articleload model
hi it's possible to load a model create in the workspace of matlab (see figure) ? thanks best regards
View ArticleMagnetophoretic Separation
Hello, I'm trying to simulate magnetophoretic separation in a cylindrical cavity filled with water. Something in my simulation is still missing or wrong, I would be grateful if someone could help! I...
View ArticleJoule heating in a conductor
I'd like to model a cable covered with a insulation. The current of 10A is flowing through the cable. I do not have any parts grounded. I used the "Terminal" option as suggested in the COMSOL example...
View Articleport boundary condition vs. PML+port boundary condition
Hi all, I get different results when I use port boundary condition and PML together than when I only use port boundary conditions for input and output. I've calculated transmittance and reflectance and...
View ArticleComsol 4.3a Memory problem -- not using enough RAM
Hello everyone, Usually the complain is that Comsol is using too much memory, but in my case its other way round. I have a really nice machine in the lab with windows 8 server. I have Comsol version...
View ArticleContact problem. Static vs Dynamic
I have an impact model; steel presses down soft tissue. I can solve this model in static analysis with prescribed displacement. But when I solved the model in dynamic analysis with prescribed velocity,...
View ArticleTwo solids in contact with relative movement
Hi I was wondering if there are any comments on the problem that I am working on it at the moment. Basically, consider two solid cylinders (like piston and cylinder) that the first one is moving inside...
View ArticleCOMSOL closed during computation
Hi, My model includes an electrostatic module and three convection and diffusion modules. The model did work well for some times, but recently the COMSOL keep closing during computing with the same...
View ArticleParticle energy distribution
Hey Comsol gurus, I am trying to simulate complex particle distributions in electric and magnetic fields. The mf and es parts are working quite nicely but I am experiencing some difficulties setting up...
View ArticleParticle Tracing Plot
Dear Comsol Community, I am simulating particle tracks in a mass spectrometer. I would like to know the particle positions after they exit the magnet, i.e. when they hit a screen. I would like to make...
View ArticleLinear Boundry Load
hi, My model is a simple square geomechanical model. I am going to apply a linear boundary load along the right side of square but there is no option for doing this. Could you please help me with this....
View ArticleB-H curve for Soft Iron
Hello there ! I am about to use (soft iron) as a core for a saturable device . I need to specify the H( knee) & B(sat) points, but the listed values of B & H in the BH curve seem to away...
View ArticleNegative effective strain (solid.epe)
Hello! I'm doing a thermo-mechanical transient process, however, when I evaluate the effective plastic strain versus time at certain points, I get negative values for effective plastic strain (ts.epe...
View Articlewireless power transmission, 2 coil's
Dear all, I'm still relatively new to comsol but have some exercises through. Now to my task. I want to simulate an inductive transformer. N1= 21 N2=18 f=140kHz R1 R2 -----------|=====|--------...
View ArticleFlux through arc of circle
I have to compute a magnetic flux though an arc. I tried to specify a parametrized curve 2D to evaluate the integration but I do not know how to specify the minimum and the maximum value of the...
View Articleswept mesh
I am trying to simulate T-junction conduction-convection fluid flow. I am using swept mesh with rectangular mesh. When I start solver the solution progress becomes very slow and the computer seems to...
View ArticleLooking for someone with Comsol experience
Dear all I need some Comsol models to do in the next month. I don't have much time and experience to finish all so I am looking for some help. The simulation must be in the Ac DC module to model the...
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