Deformation of oil droplets in water caused by pressure variation
Hi everyone,I am trying to build a model in which a drop of oil in water (emulsion) is subject to cyclical pressure variations (for example, sinusoidal). The final aim is to show the deformation of the...
View ArticleMaximum operator in a specific domain
The below post is related to an archived discussionHI, I am trying to get the maximum value for the mechanical stress in a certain domain of my geometry (Let's say domain 2, should be around 45 MPa),...
View ArticleHow to specify initial coil current in Electric Circuit + Magnetic fields
Hello, I want to simulate the decay of the current in a coil from an initial state. The coil is connected to an external resistor.The initial state has been simulated in a stationary solution, with a...
View ArticleWay to represent acoustic dissipation in time domain?
Hi,I have a system which takes advantage of the inherient loss in the system. The simulation result is quite good in frequency domain. And the system inherient loss is modeled by assigning a complex...
View ArticleEmission Spectra
Dear All, I would like to know how to plot Emission Spectra (Emitted intensity versus wave-length) for thermal radiation in Heat Transfer Module and for emitted rays in Ray Optic Module? Best wishes,...
View ArticlePrescribed Displacement or Fixed Constraint
Hello, I'm using Comsol Multiphysics for my master thesis to realize a breast model. Now I'm studying the effects of the gravity load on the breast tissues, but I have some problems to reproduce the...
View Articlemaxwell stress tensor in RF module
Hello allI want to use maxwell stress tensor it in RF module to calculate the force on a dielectric particle above a surface, The particle is illuminated with a planewave. I already did the calcuation...
View ArticleFlapping Wing Simulation
Hi,I want to simulate the stress which is acting on the wing while it's basically flapping. For simplicity, in 3D rectangular shape wing, I just tried to apply angular velocity in fsi-moving mesh...
View Articlemicrofluidic mixing via Acoustic Force
Hello all, I want to increase mixing efficiency in microfluic with H shaped microchannel via Acoustic force. But I have ni idea how to use Acoustic in my model and which interface I am suppposed to use...
View ArticleNoise (sound) Produced by Vortex shedding
I'm new to comsol so please bear with me. I wish to know the sound produced and propagated by vortex shedding of air flow over a cylinder. Do I use the Linearized Navier-Stokes, Frequency Domain (Insf)...
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Help: simple simulation of the concentration battery
Hello everyone. I have been plagued by the simulation of the concentration battery recently. the model like this: WHO CAN HELP ME I am truely thankful my email: chenxu2656@gmail.com
View Articlemicro pattern on circle
Hi i want to create micro rectangular pattern on circle circumference like the figure in the attached file, i need help regarding this.
View ArticleThermal coupling on shell elements
Hello everybody, I am trying to ceate a thermal contact between two plates. I created medium surfaces to model the problem with shell elements. I am using the physical interface " heat transfer in...
View ArticleHow to simulate using wave optics a model of big dimensions
Hello,I'm trying to simulate using the Wave Optics module what happens when a light source (450 nm) is intruduced in a device with certain geometry, how the electromagnetic field develops throughout...
View Articleproblem of point source amplitude in The Pressure Acoustic, Transient Domain
hi, I'm doing a simulation about the pressure acoustics transient domain.In my simulation,I use a point source as the input,and define the wave shape of the point source as sine wave.The problem is...
View ArticlePressure Drop Black Box
I am modeling a facility exhaust system at a plant in order to properly balance the system with new additions we are planning. In this exhaust system we have a filter bank where there is a pressure...
View ArticleFailed to find a solution
While running a simulation on my 3D model, I encountered a problem that reads:Failed to find a solution. Maximum number of segregated iterations reached. Returned solution is not converged. Not all...
View ArticleIncorporating Pressure into an Electrostatic Study
Hi,I'm trying to perform a partial discharge analysis in cable insulation using COMSOL.I would like to incorporate pressure into an air-filled void in the insulation of a cable (e.g. 101 [kPa]).How...
View ArticlePower and Intensity in acoustic model
Hi everyone,I am using the acoustic module for performing simulations of a piezoceramic tube immersed in water. Plotting the acoustic intensity profile along the axial direction at the center of the...
View ArticleHow parallel my model can run?
i am working on a simple time dependent simulation that include a single domain of a conductive gas (custom made T dependent material ) with electric current + heat transfer in fluids interfaces, so...
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