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PML for infinite layered films
Dear folks, I am trying to simulate a point source illuminating on a stacked films extending to infinite. A intuitive way to truncate the film, I think, is to use PML. However, when extending the...
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What COMSOL Module is Needed for a "fluid-structure interaction" model?
Just a quick question here... What COMSOL Module is Needed for a "fluid-structure interaction" model? Can one perform this is the "Microfluidics Module"? Or, does one need the "Structural Mechanics...
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How to calculate the impedance
Hi everyone, I'm trying to calculate the impedance after feeding my set-up with a constant voltage. As I have frequency-dependent parameters (relative permittivity and conductance), I expect complex...
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Segregated Solver
Hello, I was wondering if someone could perhaps explain to me the nature of the segregated solver so that I may understand it a little more clearly. I have seen other threads discussing this in the...
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Drawing a sinusoidal wave in COMSOL
Hello; How can I draw a sinusoidal wave as a part of a geometry in COMSOL? Thanks for your help. Sincerely; Uldouz
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Part of module
Good day. It is possible to create a report in which it was shown as part of the model? Thank you.
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Coupling 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...
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Parameters 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...
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Pulsed 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...
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current 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...
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How 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...
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Resonating magnets
Hi folks, Me and my team-mates are working on a project and we now need to simulate a design we made. We have a tube with a length of 10cm and a diameter of 2cm. At both ends of the tube, say x = -5cm...
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Surface temperature dependent heat transfer coefficient
I'd like to apply a convection heat transfer boundary condition to the attached problem. Currently I am using a constant convection coefficient (h=10 W/m2K) on the interior gypsum surface. I have...
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Problem 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...
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imported 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"...
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Adaptive mesh refinement within a parametric sweep
I am trying to solve a fluid flow problem over a range of inlet flows using a parametric sweep. The solution does not converge at higher flows, so what I would like to do is run the sweep until it...
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Vibrationg structure in fluid
Hello Everyone, This is my first project with Comsol so I have no clue about what I am doing really. My questions are most likely very simple/stupid I'm sure anyone here can help me. What I want to do...
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Plot templates?
Hello, what is the trick to manage all the results coming from different sets of parameters? i run each set into a new mph file. trouble is, when i improve one of the models, i need to correct all of...
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Singular matrix error
Hi, I am new to Comsol. I have been trying to simulate flow over NACA4412 airfoil. I have been using circular domain. My boundary conditions are 1. no slip on the airfoil surfaces 2. inlet velocity -...
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plate capacitor in frequency domain emf
Hi, I built a model of a simple two plate capacitor and I want to compute the capacitance in frequency domain with the emf interface. I built two plates, set the material to copper, created a...
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