electric field,temperature and pressure
Hi all, I've designed string insulator using comsol multiphysics 4 (3D) i've formed a cylinder around the insulator model as a air medium and i've given the conductivity and permittivity values. But i...
View Articlefield distribution
hello sir/madam, i designed a insulator and i want to analysis the field distribution along the surface of insulator but i can't get that please give me your succession and in this im going to place...
View Articlevisualization of results with hiding, volume works surface not
Dear, If I want to do a visualization of the results, I need just a part of the total structure to be plotted. Therefore I make a view and hide the parts which must not be visable. When I enter a...
View ArticlePhysics for FET based biosensor
Hi, I am currently working on FET based biosensor for cholesterol detecion.I want to know how to get the current as output and what kind of physics is most suited for this kind of application using...
View ArticleHow do I implement maxwell-voigt model in PDE mode
Hi, I'm trying to elongate a simple 2D model and I want to implement a maxwell-voigt type viscoelastic response. How do I implement this in PDE mode? or is there a simpler approach? Thank you in advance.
View Articlecolor rage manual
Hello to everyone! Could you please inform me on how i could change the range of a colour bar manually in a .3.5a file? (i know it's a too old version). Thank you in advance for your response! Marilena
View Articlewall effect on particle terminal velocity
in the model of 'sand settling velocity', 'symmetry' boundary is used, now I try to see the wall effect, so I changed it to 'no-slip', but COMSOL doesn't work any more. Is there any comment? Thanks!
View ArticleFlow of fluid over an obstacle
Hi. I am very new to comsol software. I have been trying to simulate the fluid flow in a microchannel. I have designed the channel in workplane and extruded it to 50um to get the 3d structure. In the...
View ArticleDifference in 3D simulation of duct to rotated 2D simulation?!?
Hi everyone! I created a simulation for a circular duct which is heated by a constant heat flux. Does it make a difference to simulate a 3 dimensional geometry or a 2 dimensional geometry (rectangle:...
View ArticleNano Dielectrics
dear sir/ madam how can i create nano composite dielectrics ? how to see the field distribution and heat transfer in nano compositedielectrics materials plz guide me.
View Articleplease help me how to eliminate the perspective effect .... how do you...
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View ArticleIntegration with a variable integration bound
Hi, i am using a 2D axisymmetric model. For my simulation i need to evaluate for each point (r,z) the integral of f(r,z')dz' from 0 to z keeping r constant. Can you tell me how to implement this in...
View ArticleEffect of temperature on SAW devices
Hi, I'm trying to simulate the effect of temperature on Surface Acoustic Waves (SAW) devices . I'm using the module "Piezoelectric devices" and so I get the response of the admittance in a certain...
View Articlegot problem with my simulation on nano scale particles
I would like to simulate the magnetic force on an iron particle due to an external magnetic field. The magnetic field is generated by a wire, conducted with steady current. The wire is about 30um in...
View Articlecoil design
Hello, I work on a cold crucible magnetic modelisation with the mf physic around 10 kHz. I want to design a 2 turns coil according to the real geometry (with little simplifications). I start with a 3D...
View ArticleTime dependent study with Joule heating and thermal expansion physics
Dear Sir, I have made two 2D geometries using Joule heating and thermal expansion physics. I am using time dependent study. So the actuation electric potential is provided using the 'Piecewise...
View Articlesaw devices
hi I am trying to model a Surface acoustic wave device using Comsol 4.3b. I want to obtain the real and imaginary part of admittance in frequence response . thanks
View ArticleElectric Field
Where can I get a tutorial about how to simulate a electric field with some geometries, I am new in comsol thank you
View Articleinsertion losses
I am trying to model a Saw devices using Comsol 4.3b. how i can to obtain the insertion losses in frequency domain??? thanks
View Articlevibration of film,model by Structural Mechanics
Recently, I model vibration of film, because I want to compare the Eigenfrequency of 3D and 2D, my model is Structural Mechanics, not Shell or membrane; I find the mesh affects the solution result, the...
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