Poroelasticity + Hyperelasticity
Hello All I am trying to model a poroelastic material which is under compression. The point is that the matrix of this material should be hyperelastic. I added poroelastic physics but when I also try...
View Articlegyroscope design
pls guide me to design a gyroscope using comsol4.2.i can't get the design procedures for vibratory gyroscope.
View ArticleDeep Brain Stimulation (DBS) simulation
Hi, I'm a COMSOL begginer and i'm trying to simulate DBS in comsol using the Laplace equation for solving the electric potential within a defined geometry, in this case i had built a sphere including...
View ArticleNitrogen plasma simulation: cross section file?
Hello, I followed the webinar about plasma simulation, and they told something about a french institut in Toulouse who was supposed to provide the cross sections data for different gases.like the...
View ArticleHow to implement massless formulation in particle tracing
Does anybody know how to implement mass-less formulation in the particle tracing module instead of drag force? What is the boundary condition in this case? Thanks
View ArticleThe inlet condition in the plasma module
Dear all, I am using the DC plasma module to model a certain discharge. I recently wanted to use the inlet condition in one of my simulations. But the problem is that I always get 'Inconsistent Initial...
View ArticleHow to specify different boundaries in an equation
There are two boundaries in my model: Boundary A and Boundary B. Boundary A is located at x = 0 cm, while Boundary B is located x = 2 cm. There is an equation which is a boundary condition: -q*(∇u2) =...
View ArticlePlasma nitrogen
Hello. Does anyone have data for the simulation of plasma ICP for nitrogen? Thank you.
View ArticleAdding Refractive Index
Hi I m a beginner in COMSOL. I m working on GaAs-Air interface. I want to know how to add refractive index to GaAs manually from material properties. I searched in material properties but couldn't...
View ArticleSpace-Time plots
Hello, do you know if there is a way to produce space-time plots in COMSOL 4.3? I'll explain better my problem. I am simulating a rection-transport problem in 2D geometry with the time dependent...
View ArticleHow-to : Transmission Spectra vs Wavelength
Hi I had attached the concept of my simulation as picture where you can understand my idea. For obtaining Wavelength vs Transmission spectra I need to include all Refractive index (n and K values of...
View ArticleFSI in a closed system
Dear all We are having some erratic results when trying to model the variation in pressure and flow (using FSI) in a fluid which is fully encapsulated in a polymer membrane. The idea is that by...
View Articlemetallurgy and materials
Can we use COMSOL for modeling and simulation of phase transformations and other similar materials related engineering problems??
View ArticleQuestion about potential calculation in MEF vs. EC
Hi, I asked support this question, but am under pressure to figure this out soon, so I thought I would get some points of view from the forum as well, if I could. I'm doing a simple model of a coil...
View ArticleWhy does a Private Researcher get Charged $ 10K and Colleges $ 2k ?
Isn't this considered unfair business practice or price gouging ? I am looking at 20 other multi physics simulation software companies because of this.
View ArticlePiezoelectric material properties
Hello, I am using a piezoelectric material in my modeling. I know Young's modulus, density, Poisson's ratio and dielectric co-efficient of the piezoelectric material. However, I do not know how to find...
View ArticleVariable WAr in microwave plasma simualtion & other
Hi everyone, I'm trying to re-do all the steps of the following model : inplane_microwave_plasma.mph, available in the model library. I encountered two different problems that i don't understand. 1)...
View ArticleCant able to select magnetic field to spiral coil
Dear all, I made a geometry of spiral coil considering inner radius of helix is zero and when i am defining the material to coil, its not able to take in domain. It is taking in edge and then when i am...
View ArticleSpecifying units for an interpolated function
I have 2-D temperature field that I am importing into my model via an interpolation under global definitions. I want to specify the units of that temperature field as being deg C. How do I do this? I...
View ArticleODE model did not give a resonable result and time consuming
Recently, I have used the COMSOL ODE to develop a model. But, no matter how I revised the model , I could not obtained a resonable result compared the the result of Matlab ode45 and the calculation was...
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