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Controlling Current at Semiconductor-Electrolyte Interface
Hello,I'm doing a stationary study on a 1D photoelectrochemistry model and I want to account for charge transfer at the semiconductor - electrolyte interface. There is no coupling between the...
View ArticleResult doen't change with change in material
Hello, We are trying to simulate the electric and magnectic field on the surface of a robot. We have simulated and obtained good results for the robot made of dielectric materials, but when we changed...
View Articleinverted mesh elements with moving boundary
I am working on a project looking at how a solid/liquid interface develops. I am using the deformed geometry feature to create this interface. The issue I am facing is that as the boundary expands, the...
View ArticleProblem in rotordynamic analysis
Hi I am trying to find out critical speeds (eigen frequency in COMSOL) of a turboexpander. I am imporing the geometry file from SOLIDWORKS. I am unable to form an union so I have formed an assembly...
View ArticleImpedance between two electrodes
Hi all,I have problems calculating the impedance as a function of frequency between two metal electrodes, within a liquid medium using Comsol 5.3 and "Electric current(ec)" module. I used frequency...
View ArticleProblem to compute model
Hi,I have been computing the model for about 8 hours+ but rhe progress seem not moving at all. Any possibility that there is problem with the model? Or I should just waiting.This is the link:...
View ArticleExport 3D simulation data
Hi,I have a 3D electrostatics simulation which plots current density streamlines. I want to further analyze these data but need the numerical values from COMSOL.Looking online does not show an obvious...
View ArticleRainfall induced air flow in the subsurface soil
Hi, I am trying to simulate the rainfall induced air flow in the subsurface soil. I have used the 1) two darcy's law model and 2) multiphase flow in the porous media model according to the examples of...
View ArticleHow to apply current across electrodes positioned on a microfluidic channel...
Hi,I am new to COMSOL. I am working on a project where i have to design a 7 electrode sensor to measure the conductivity of water.What i am trying to doI want to apply an ac current (1mA 400mV...
View ArticleTracing the curve that reflects the mutual inductance between two coils in 3D
Hello everyone I tried to draw the curve that reflects the mutual inductance between two coils, one powered by an electric current and the other no, this curve will normally be decreasing in function...
View ArticleSurface plots in a log scale
Hi thereI am generating a 2D surface plot of the velocity magnitude. I have small regions with very high velocity magnitude compared with the remainder of the plot. This means I have small regions of...
View ArticleTemperature Distribution in a Vacuum Flask with a Matlab problem
hello,guys, I'm learning from a case study，but I meet a problem,when i click Compute,it shows a error:Multiphysics compilation error.Can not start Matlab,- Library: csmatlab.dll could you teach me how...
View ArticleThe size of PZT-5H transducer
Hi everyone,I have been wondering if the size of PZT-5H transducer in my ultrasound modelling will affect the wave propagation or ultrasound behaviours. If yes, is there any reasons causing that to...
View ArticleHow do I edit equation in COMSOL Multiphysics?
I am using COMSOL Multiphysics 4.3a. I want to simplify the Helmholtz equation in "Pressure acoustics". How can I make some variable (Monopole and Dipole source item etc) value zero to simplify it? I...
View ArticleProblem with Interpolation (Comsol 5.3a)
Dear all,this simulation model interpolates a data from a file which plots refractive index and voltage. It is able to import the file but when I start to run the model, it fails. I think there is a...
View ArticleImplementing custom boundary heat source with local x coordinate
I want to insert a custom boundary heat source which depends on position x along an edge.I have two questions on how to implement this:How can I create a local x coordinate along this edge? Something...
View ArticleTotal enthalpy calculation
Hello I´m simulating a system where I want to know the inlet specific entalphy, the fluid is water so Cp=4186 J/kg*K. With the boundary probe Comsol gives me the values I´m looking for but I want to be...
View ArticleAdd piezo-resistive coefficient in doped channel for MOSFET
Hi,I am simulating the Ids current in a MOSFET. I want to see the Ids current change on application of mechanical stress. For that, I wanted to add the π-44 piezo-resistive coefficient of the doped...
View ArticleMemory usage increase with looped LiveLink for MATLAB
Question: How can I eliminate the LiveLink for MATLAB server from storing "things" in my computer memory when I run it?Situation: I am working on simulating li-ion battery at different conditions using...
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