Force varying with time
hi, im quite new with Comsol and im doing an assignemnet where the force at the end of the beam keeps changing with time i have the formula, i just dont know where and how to key it in, because its a...
View Articlehow to model SOFC Fuel cell( physics implementation steps and how to get...
Hello ,I am working of SOFC fuel cell and i am facing a dificulty in multiphysics implementation and their coupling. besides this i need to implement a chemical and electrochemical reactions at the...
View ArticleThermal Stresses during phase change
I am trying to simulate the thermal stresses during a phase change. I have used Heat Transfer in Fluids to model the transition from liquid to solid metal during solidification. When it solidifies,...
View ArticleSDOF (mechanical simple oscillator)
Hi, I've a problem with the mechanical simple oscillator. I do the system with node pinned, spring and mass, then I launch the calculation. I wait the sinousoidal graph, but the result is a sinousoidal...
View Articlescattering : convergence issues at longer wavelengths
Hi,I am trying to observe scattering from gold hemispherical nanoparticle (r = 50 nm) placed on substrate. I am modelling substrate using a slab (silicon). I am using scattered field formulation. I am...
View ArticleRun Comsol remotely (Ubuntu)
Dear,I would like to access comsol which is installed on a remote computer (Ubuntu) using putty and Xlaunch. Can someone provide me with the command to launch the Gui from comsol from the terminal? Do...
View ArticleThermal modelling for a Li-ion battery cell
Hi,I m doing a thermal modelling for a Li-ion battery cell (but not as in the COMSOL tutorial since I don't have the licenses for the battery and fuel cell module) and I m new to the COMSOL as well....
View ArticleSchrodinger-Poisson Coupling for Heterostructures + Electric Potential Error
Hello,I am performing a self-consistent SP calculation on a 1D multiple quantum well heterostructure. Neither of the example applications are heterostructures and I wanted to clarify how to do this in...
View ArticleTwo way coupled PDE problem
Dear, I am trying to solve two coupled PDE. I have successfully solved them saperately putting one as defined variable. But while solving both simultaneouslyshowing error. I tried to use two saperate...
View ArticleHi, query regarding gas sensing
hello sir, any comsol worked out example related to design of a gas sensor with simulations and studies please mail me also Suggest how to do the modelling of a gas sensor. thanking you in advance.
View ArticleRegarding the value of piezoresistive coupling matrix of Aluminium
Dear All,I am interested in knowing the value of piezoresistive coupling matrix of Aluminium (m4/s.A2) for simulating my geometry which is based on piezoresistivity effect. Any help for the same will...
View ArticleLight transport mutilayered media
Hi! I'm trying to model light transport through multilayered 3D turbid media. I'm using the coefficient form PDE to set the diffusion equation, in a geometry divided in multiple domains (one for each...
View ArticleMagnetostrictive multiphysics coupling
Hello everyone.I have been using COMSOL Multipysucs since last few months. I was previously working with piezoelectric devices and the results were dead on with analytical results. My current work is...
View ArticleMatlab livelink data from mphplot
I understand that the plot data is contained in an object given to me by the function mphplot(model,'pg1') How do I save that plot using only the command line and not the GUI? How do I access the plot...
View ArticleHow to simulate a kind of material's deformation under water (such as 3MPa...
Dear all, Does it needs 2 regions, one is water, and the other is the material? Or JUST the material is needed? In fact, the material I want to simulate contains a cavity, and I want to know the real...
View ArticleHow to couple displacement nodes to a surface deflection in Comsol multi...
I am doing a simulation in Comsol which is related to modeling a car going through a path. The problem is that I can not couple the suspension system nodes to path surface.
View ArticlePiezoelectric energy harvesting from vibrations of a rotating shaft
I am working on a project titled "Piezoelectric energy harvesting from vibrations of a rotating shaft". I have done piezoelectric energy harvesting for transverse vibrations, by applying a mass at free...
View ArticleCannot change units of dependent variable and Source Term (Domain ODE and DAE)
Hi,I set these units in the model myself, and cannot revert them! Also tried inserting a new "domain ODE and DAE" interface to the model and these are deactivated there as well.Cannot seem to...
View ArticleRoller problem
Im trying to simulate the deformation under stress of a part I designed. It has an simple roller which i try to simulate by giving it a roller or symmetry condition. But this results in very high...
View ArticleTranslating comsol version 5.4 to 5.3
Hi my University utilises two different versions for comsol 5.4 and 5.3. However they only have Matlab live link with version 5.3 but I have done all my work with 5.4. Is they a way to translate a file...
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