Microfluidics device for sorting of particles
Hi all, I am attempting to do simulations on microsorters based on dielectophoresis and magnetophoresis. I managed to do the simulation for just 1 type of particle but i'm facing issues setting...
View ArticleVoltage Dependent Resistor
Hello; I want to simulate a simple electrical circuit as an initial step of my main study. In my study, I need to define the resistors whose values depend on the voltage gradient across them. However,...
View ArticleMoems Fabry Perot Pressure sensor
hi.. i am trying to simulate the structure something like attached figure. what i need to do is apply sinusoidal excitation (of resonant frequency of whole structure ) at the base (lower layer) of the...
View ArticleLine Graph using expression for x-axis
Hi, I am doing magnetic field simulations to validate analytical models. For this I need to have the line graph of the radial field in the airgap for example. This works fine, as long as I plot it over...
View ArticleUltrasonic Atomization
Hi All, We want to simulate the ultrasonic atomization (Piezo electric transducers) phenomenon in the Acoustics Module. for (Experimental, and Theoretical) verification and validation if any one have...
View ArticleHow to obtain x and y coordinates of a curve as function of angle along...
I want to know the x and y coordinates at a certain angle (sys2.phi) from a curve which runs around [0,0]. For a circle with radius R this can be found easily with formula's. However, for curves of...
View ArticleProblem with reference edge in multiturn coil domain of 3D
Dear all I have problem with defining the reference edges for my model which consist of two coils with separated distance .I used multi turn coil domain in 3D to excite the coil and I defined the...
View ArticleA question about mass flow rate inlet condition
Hello, I am trying to build up a model to simulate single phase gas flow in a fluidized bed reactor. I am using k-w turbulence and wall functions for the wall boundaries and pressure condition for the...
View Articlevariable &
i simulation reactor steam reforming . The heat transfer coefficients have been entered into the : k_CO2 ((3.69*(TS[1/K])^(-0.3838))/(1+(964/TS[1/K])+(1860000/(TS[1/K])^2)))[W/(m*K)] Thermal...
View ArticleSqueeze flow: level set with moving mesh
Hello, I am new to the fluid module and am trying to simulate a liquid droplet being pressed between two plates where the plates are larger than the initial droplet (the other problem is much easier to...
View ArticlePlot radial and tangencial components
Hello, I need some help about the results of a cylindrical motor. I have a cylindrical motor defined in 2D. I have defined the cylindrical system "sys2", and now i want to see the radial and tangential...
View ArticleDifference between Time dependent and Time discrete
Hi, I am working on a conjugate heat transfer problem. By t=20s, the system reaches steady state. Then I would like to see the system response after t=20s, using step function to switch off a source...
View Articleusing multiple Comsol Windows simultaneously on Mac OS
Hi, until now I was unable to use multiple Comsol Windows simultaneously on Mac OS. Is that feature only available with the Windows version? Regards, Denis
View ArticleSimulate half of photonic crystal fiber
Hey guys! I have a little bit confusion of using comsol. I want to simulate a cross-section of a photonic crystal fiber. However, because its scale, I only want to simulate half of the fiber section....
View ArticleFluid velocity calculation in discrete fracture
Dears, Now I am simulating discrete fracture in a 3D space and I need to calculate fluid velocity inside fracture . So my question is should I multiply by fracture aperture during calculation or not u=...
View ArticleFluid velocity calculation in discrete fracture
Dears, Now I am simulating discrete fracture in a 3D space and I need to calculate fluid velocity inside fracture . So my question is should I multiply by fracture aperture during calculation or not u=...
View ArticleComparing comsol plots
Hi all, Am doing an optimization study to find the best boundary condition suitable for my application. I have simulated my design with various boundary conditions and have obtained the plots. please...
View ArticleMismatch between calculated answer from Comsol and Matlab
Anyone know why the result generated from Comsol (4.2) different from the result calculated by using Matlab? I am doing 2D mode analysis for photonic crystal fibre, i draw and defined all parameters...
View ArticleThermoelectric Effect - Adding the physics
Hello, I'm working in a project on thermoelectric generator. As 'Thermoelectric' physics interface,is not in the physics area/physics list, I was trying to add the physics using the steps given in the...
View ArticleEigen frequency analysis
hi, i am dealing with a nanotube sensor...can i use eigen frequency study step to find frequency at which displacement is maximum or should i use some other study step..
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