Two solids in contact with relative movement
Hi I was wondering if there are any comments on the problem that I am working on it at the moment. Basically, consider two solid cylinders (like piston and cylinder) that the first one is moving inside...
View ArticleAlkali Silica Reaction (concrete)
Hi there, I am new to Comsol Multi-physics I was wondering if you could help me to model a concrete ASR chemical reaction. Any Ideas please write a post. Regards
View ArticleDoubts with induction heating
Hi, i'm designing an induction heating system applied for an FDM (Fused deposition modeling) extruder for my final proyect. I started using a ferritic stainless steel (430), which has a relative...
View ArticleWorking with tutorial Sliding Wedge
Im working with the tutorial Sliding Wedge, a warning in my resolution said: In segregated group 1: There was an error message from the linear solver. The relative error (0.0061) is greater than the...
View ArticleMesh Resolution Investigation
Hello I wanna check mesh convergence in my simulation. I make the maximum mesh size half in each time. Am I right or I need to make the number of elements half? Is the any relation between the number...
View ArticleOverlapping 1D beams with different properties
Hi all, I am trying to combine two models of 1D beams each with different properties. The 1D models are simplifications of a solid nuclear fuel rod composed of uranium dioxide and its fuel cladding...
View ArticleVanadium Redox Flow Battery
Dear COMSOL Community I have a question regarding the example of the Vanadium Redox Flow Battery (www.comsol.com/showroom/documentation/model/14153/). I have tried to simulate it but I get following...
View Articlemode analysis of a waveguide
Dear all, I'm trying to reproduce the results which is on www.comsol.com/cd/direct/conf/.../11847_frezza_presentation.pdf (Comsol conference 2011, page 7, symmetric case, neff). Could you let me know...
View ArticleModeling rigid components
Hello, I am working on a contact model where one object is much stiffer than the other. In other modeling programs I have used it is possible to assume the very stiff surface is infinitely rigid...
View Articlehow to define shear modulus with respect to relaxation time ..
i am trying to model homogeneous linear viscoelastic model with the properties of cells ..and a polystyrene bead inside the viscoelastic material .my final result what i am expecting is to get the...
View ArticleFlow in simple geometry does not converge
It's been my first day with Comsol and it's CFD package, so please don't be too hard on me. I have (succesfully, I believe) built my first geometry. It consists of a tube that has several inlets on one...
View ArticlePhase angle for piezoelectric
Hi All, I'm trying to find the impedance phase angle for a PZT-5H piezoelectric frequency domain simulation, but can only find the magnitude. I'm assuming that you need to enter in the tan (delta) and...
View ArticleWhen to use zero or nonzero conductivity for plasmonics?
Hello, We have looked at the Optical Scattering off a Gold Nanosphere model (model 12415) after trying on our own to solve for the frequency response of a gold nanosphere. We also attempted modifying...
View ArticleTransient Drug Diffusion Across Cornea
Hi, I'm doing my first Comsol project and need some help. My project involves modeling transient drug diffusion across the cornea and I would like to show my end results through a transient diffusion...
View ArticleTime solver dynamics - advice
I'm in "currents and voltages" applying a current density pulse within a copper short going through the glass dielectric of a spherical copper capacitor. This is a biological equivalent, there is no...
View ArticleHow to construct a new equation in COMSOL interface? What kind of file format...
Hi, Anyone can suggest me some way to construct my own equation in COMSOL? Thanks Alex Lee
View ArticleType of physics needed to solve thermal stress and strain between 2 materials...
Hi, I'm still a new man in COMSOL Simulation. Basically, i'm not quite sure how to use the suitable physics to include in my problem stated in the subject matter. Can anyone help me on that? Since i'm...
View ArticleLarge Deformation Analysis- Convergence Problem
Hi All, I encounter a convergence problem in my COMSOL model. It is greatly appreciated if someone help me to solve this problem. As you can see in the attached model, I am modelling a cartilage using...
View Articleliquid thermal expansion by comsol?
Hi I want to simulation air thermal expansion in a sealed chamber, leading to a deformation of PDMS thin membranes on the top of chamber. I can not find suitable example form COMSOl. Does anybody give...
View ArticleThermal expansion of a liquid
Hi all, I’m am trying to produce a model of a fluid enclosed on all sides except one by fixed constraints(walls), on the remaining face a thin diaphragm is in contact with the fluid. As such this is a...
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