How to see all the surfaces or interfaces of a volume
Dear Sir/Madam, This is Keyvan,from Politecnico di Milano, If I have a 3D result including 5 layers of interfaces; how I can see this different surfaces? I am trying to see the current density...
View ArticleCoupling plate and acoustics
Hi everyone, I'm trying to model a axisymmetric disk in 2D which is actuated with 40kHz in the middle in axial direction which gives a pressure wave in the surrounding air. The air is represented by an...
View ArticleParameters in file name
Hello all, I am in a situation where I need to work with 40 or so parameters, and as a result when I export my results from a parametric sweep (with parameters appended to the file name) the file...
View Article3D meshing of thin layers
Dear all I want to mesh a 3D model using different layers with various thicknesses. I used Free Tetrahedral meshing but for the thin layers (about 100 um in thickness) in the model the following error...
View ArticleMixing two materials
I'm trying to simulate the behavior of a model made of a material which is a mixture of two materials available in the library. The materials are mixed in unequal proportions. I'm able to calculate the...
View ArticleFrequency domain analysis in general PDE form
Hi all, As you may know, the PDE(general) module has the form of (a*d^2(u)/dt^2+d*du/dt+nabla.nabla(u)=f ). This format provides the possibility for implementing our own equation in time domain...
View Articleerror of 'Failed to find consistent initial values'
Dear all, I have been trying to develop heat transfer (laser pulse model), but After building model when I run the program, COMSOL showing me error .......
View ArticleLoad materials from library with Java API
Hello COMSOL aficianados, We are working with the Java API for COMSOL here. Let's say you want to load the material copper into your model. It seems, according to the manual, that the only way to get...
View ArticleHow to use solution as initial value for 2nd study with changed geometry?
Hello Everybody. I’m using comsol 4.3a. I try to use the solution from study 1 (stationary heat transfer) as the initial temperature value for a second time dependent study. Further a new geometry...
View ArticlePulsed Jet
Hello, I'm trying to make a pulsed jet for a tilted Micro Jet for flow control. I want to ask you guys if it's possible to make it, how can i do it? Salut, Je suis entrain d'essayer de réaliser des...
View Articlecurrent in 1D element
Hello everybody, I have a network of 1D elements and I have modeled the current flow inside them using Coefficient from edge PDE. So after running the model I have the voltage in all the structure as...
View ArticleHow to calculate the transmission
Dear all, I have a question about how to calculate the trasmission through the nanostructure. For example, in the "Optical Scattering Off of a Gold Nanosphere" tutorial, we tell comsol to solve for...
View ArticlePipe Flow-T junction-different viscosities
Is it possible and how it can be done to have the inlet flow with 1 specific viscosity and the 2 outlet flows with different viscosities - in other words a distillation process? Thanks,. -- Arthur Rupel
View ArticleProblem in Meshing
Dear Sir/Madam, We are using a cORROSION module based on a complex imported geometry (steel cage in ac oncrete with five surface boundaries).After following the sequence of steps to simulate an OIL...
View ArticleAdd time dependent equations to the physics builder
Dear All, I am trying to use the physics builder to model the thermoelectric effect. As it happens there is a step by step tutorial for this exact example available; the problem is that it only...
View Articlesubsurface apparent resistivity
hello, how can I put in comsol the analytical expression of the apparent resistivity with a shlumberger device thanks
View Articleelectric fields in cell membrane, connecting between boundary ode and domain...
Hello, I'm modeling electric fields in a cell membrane undergoing electroporation (creation of nano-defects, or pores under the influence of electric fields). I am using the ac/dc module in 4.3....
View Articleimported model creates extra domain
Hi, I have a simple 3D model that I've exported from Solidworks as a Parasolid x_t file and the pulled the Parasolid file into COMSOL. I am having a meshing issue which I have tracked down to a "ghost"...
View ArticlePhotonics Crystal Fiber
Hi, can anyone send me an example of solid core PCF? because ive got trouble on how to do this, especially to get the S-Parameter study.. is it necessary to run in 3D simulation? thanks :)
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