Difference between mf2.Bx/y/z and mf2.normB
Hi.Im working on building 3D gradient coil. When im plotting magnetic flux density im confused with mf2.Bx/y/z and mf2.normB. I need to plot resultant magnetic flux density on X & Y & Z axis....
View ArticleI am planning to take project on MEMS ultrasonic transducer in medical field
I am planning to take project on MEMS ultrasonic transducer in medical field. any suggestions
View ArticleError in NITF
I am trying to simulate the fluid flow in a manifold system and am getting the below error. The coupled interfaces are Turbulent Flow(k-epsilon) and Heat transfer in Fluids. RANS model has been used...
View ArticleSimulate with imported mesh
Hi, I have a .nas format imported to comsol as mesh. However, when I create geometry from imported mesh, another component is created. I wonder wether it is possible to create geometry with imported...
View ArticleRF Wave Oscillations
Hi there,I am relatively new to COMSOL, I am trying to model how the magentic field inside a resonator cavity oscillates within one wavelength of a microwave source applied to the cavity, as if I am...
View ArticleMeaning of some variables in an example "GaAs_PIN_photodiode"
I have a question for the example "GaAs_PIN_photodiode". In equations for the current density, what is "G"? "G" is the function of (n/Nc) ?
View Articlepiecewise function
i made piecewise function of dynamic viscosity but when i apply it in laminar module it want work. like i wanr dynamic viscosity 10e8 at 304 K and at 306 K 0.008 onward .i difine it .when i chose...
View ArticleDynamic problems in magnetic fields
A box filled with liquid, the liquid will not flow, and there are short fibers that can be magnetized. Now I want to use an external magnetic field to make the short fibers rotate, and see how large...
View ArticleEasiest Way to Increase Initial Cell Voltage of model
I am using the application library 1D battery model and have changed the cathode to LFP and the anode to graphite. The initial cell voltage is at 3.3V and i need a start voltage of 3.68V how do i...
View ArticleConsideration of defect in PIN photodiode
Hi there,Now I am trying to simulate P-I-N photodiode using semiconductor & wave-optics module. Firstly, I am trying to understand and modify an example file "GaAs PIN photodiode" in the example...
View ArticleFluid Structure Interaction : Weak or Strong Coupling
Hello, I'm new here and pretty much new to COMSOL as well.So, per my understanding, there are two coupling methods when calculating fluid structure interaction, which is by weak coupling or strong...
View ArticleWhich videocard is better for COMSOL and why?
Hi there!Guys, could you tell me which videocard is better for COMSOL product (rendering, etc):NVIDIA PNY Quadro P400 or MSI GeForce GTX 1650 GAMING X? They are about the same price but GTX 1650 has...
View ArticleHelp on plotting three axis magnetic flux density.
Hei.I have built three axis gradient coils. Now i need to plot magnetic flux density on three axis. I'm confused about plotting. Which plot type to use. Can anyone help me on this.Regards
View ArticleInertial fluidics and forces
The below post is related to an archived discussion[Please help me with the same first questionin the enclosed forum. pasted below:]" I'm working on a curved microfluidic channel and trying to use it...
View ArticleNaN or Inf found when solving linear system using SOR in Turbulent (k-e)
Hi,I am trying to model mixing using k-e turbulent model in a stirred tank. I am using the same geometry and physics set-up as mentioned in the mixer modular tutorial...
View ArticleFloquet perodicity in general form PDE
Dear COMSOL community,I am trying to do calculate a band structure for a general form PDE model. However, the option to choose Floquet periodicity condition does not exist in a general form PDE...
View ArticlePlasmonic nanoscale slits simulation in ten micrometer metal sheet (add file)
Hi my name is Seong-Won Moon.I want to simulate about 200 distributed nanoslit (200 nm by 40 nm) in metal-sheet (10 um by 10 um) for looking near-field distribution(or surface plasmon polaritons) when...
View ArticleComponent duplication and parametrization
Dear all,I would like to know if there is a way to duplicate N times an entire component and set the number of instance in a parameter. Below a brief description:2D model, RF or AC/DC simulationThe...
View ArticleFSI Of Heart Valve Design
i need to do a coupled fluid solid interaction to study heart valve design. I need help regarding the mesh setup as the mesh of fluid domain is distorting very high from the fully opening of valve to...
View Articlemeasure size of features in a EM field distribution
I would like to measure the size of an EM distribution (e.g. distance between max and min intensity). I cannot find a tool to do so, since the field is not a geometry element that can be selected ! Is...
View Article