How to couple pore water pressure to simulate triaxial test using Cam-clay model
Here are some questions I want to ask. Thanks! the figures are in doc file. Problem description: We want to simulate the behavior of soil sample from a trialxial test. The cam-clay model here is...
View ArticleUsing a Gaussian Pulse
Hi everyone, I'm actuallay working on a modeling of a laser pulse which is heating a front of a material in order to determinate the diffusivity, my current issue is that i would like to model my heat...
View ArticleOptimizing with a complex number
Hello again, I am currently stuck with the optimizer. I made a forward model to give me the magnetic field, then using the optimizer, I am trying to get the resistivity of my model, by giving it the...
View ArticleError in swept of a mapped/quad mesh
Dear all, I am getting a problem in the meshing of a multilayer, composed of 3 very thin layers (0.3, 0.01, 0.04 mm). I want to mesh them using a mapped mesh, and then swept (using one swept for all...
View ArticleMode shape change with the temperature sweep.
Dear all I am modeling a hollow sphere of Pyrex. I am interested on the temperature dependence of the frequencies. To veriify the simulation i started with a conventional eiguenfreqeuncy simulations....
View ArticleComsol 4.3b on Mac OS X Lion 1D plot causes freezing
Hi all, I've just installed comsol 4.3b on my macbookpro 13" running mac os x lion. It works perfectly until I try to visualize some 1D plot, e.g. the polar plot group 2 of the model library project...
View Articleshrinking and eventually disappearing mesh
Hello, I'm working a problem where a porous particle is being heated and vaporized. I am using moving mesh with a prescribed normal mesh velocity to shrink the solid domain of the particle (see...
View ArticleAutomatic remeshing at the specific time steps
Hi everyone, The automatic remeshing for Deformed geometry or Moving mesh model can only use the mesh quality as the remeshing criteria. Is there any way to force Comsol to remesh at the specific time...
View ArticleInlet outlet mass flux is not identical
Hi all, I am trying to measure the bulk temperature, but initial testing on the conservation of mass failed as it gave me different results between the inlet and the outlet mass flux. This result makes...
View ArticlePort to use for semi rectangular shaped coaxial cable excitation
Hi I am facing problem in assigning port parameters for semicircular coaxial cable excitation. If it is circular then can use coaxial port type also if rectangular coaxial port we can use rectangular...
View Articlesome basic questions about BCs and pressure
Dear sir or madam, I am making models about laminar flow and thin-film flow. I saw the velocity boundary condition in thin-film flow is called "normal inflow velocity". What is the difference between...
View Articlecoupling solid mechanics with magnetic fields
Hello, I'm currently trying to analyze the change of magnetic flux that is made by a 3D magnet that is adjusted on a periodically moving beam. (Physics: SOLID, MF and Time Dependent) But unfortunately...
View ArticleError: Parameter lists gives empty sweep
Hello, I would like to know the reasoning behind this error in return of a monotonously incresing series of frequencies. Examples: a) 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 90,...
View ArticlePhotonic crystal fiber
I am trying to model a photonic crystal fiber with liquid crystal filled holes.. I am a starter and it would be really helpful if any one can help me regarding the resources from where i can learn the...
View ArticleInitial negative concentrations
HI All, I am trying to simulate a A+B-->C chemical reaction. I dont know why my reactants (A and B) concentration is going negative. How do I fix this? I have attached my model as well as pic of the...
View ArticleMass extraction and saturation of bulk solution
Hi all, I am fairly new to COMSOL. I am after solving a non steady-state packed bed extractor with fluid flow convection in the axial direction of the extractor and diffusion of soluble material from...
View ArticleApproach to a multiparticle system: Bacteria in medium
Hi everybody, I have recently started a bioinformatics project at university. It is about cooperation of bacteria so I want to deal with a large number (1000+) of objects in medium producing proteins...
View ArticlePML Error: Could not find any cartesian regions
Hi I am new to PML. I am using Structural mechanics module to implement PML in a cantliver to determine the waves propagating to the PML. I am getting this error: Could not find any cartesian regions....
View ArticleProperties of N- Octadecane on Comsol thermal
Hello, I with the test similer Comsol software equation heat transfer of a brick containing a phase change material (N-0ctadecane) under varying conditions. I want help on how to report the...
View ArticleHow to set boundary conditions?
I'm new to COMSOL. Where can I find the options for setting up boundary conditions for a model? I need scattering boundary.
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