Flow 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 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 Articlehow to model pipe with angle
Dear friends how to model pipe with angle in comsol. this structure is possible without meshing problem? can anybody help me Please find the attachment
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...
View Articletemperature, pressure and field distribution
Hi all, I've designed string insulator using comsol multiphysics 4.3 (3D) i've formed a cylinder around the insulator model as a air medium and i've given the conductivity and permittivity values. But...
View Articlecorona discharge
sir/madam, how to design corona ring and fix to electrical insulator,please give me immediate answer
View ArticleError "out of memory during LU factorization" in Modeling the adsorption of...
Hi, My project is 'Modeling the electrosorption'.I tried to model adsorption of ions(Na+,Cl-) on electrodes due to applied electric field.I model using Poisson Nernst Planck equation which is made up...
View ArticleMode selection
Hi all. Does anybody know if there is a way to select special modes after eigenvalue solver? For example I need only high-Q modes or modes that have some integral value positive and so on, but the...
View ArticleIs it possible to use a pulse voltage in the "Electrodeposition" module?
I'm using "Electrodeposition" module right now. Instead of Direct-Current power supply, I want to use a pulse power supply in the simulation. Is this possible in the "Electrodeposition" module?
View ArticleAcoustic Band Structure of Metamaterials
Hi folks, I have been trying to find the band structure of an acoustic metamaterial. I have been attempting to adapt the "Bandgap analysis of Photonic Crystal" tutorial given for COMSOL 3.5a to 4.3. I...
View ArticleLoad or Temperature Assignment to Nodes
Hi All, I utilize Livelink Matlab to solve a multiphysics problem. First of all, my Comsol model solves film pressure on a surface. Then, I extract the pressure distribution and film thickness of a...
View ArticleCOMSOL keeps closing
Hi I have an urgent problem concerning COMSOL. I am using modes such as "weakly-compressible navier stokes" and PDE modes, and I realise for some models I cannot open; the COMSOL will load and then...
View ArticleHow to couple turbulent flow and porous flow?
Hi, I want to calculate the compressible & turbulent flow and heat transfer in porous media. Here I have two questions. 1. How to couple the turbulent flow and porous flow? 2. I want to consider...
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