Modelling of bone
The below post is related to an archived discussionCan model the human bone structure in COMSOL 5.3a
View ArticleAmount of heat generation inside the LI-ion battery cell
Hi,I am posting this question regarding to the Li-ion battery cell thermal modelling application which is already posted in COMSOL. I want to know about the way that I can find the amount of heat...
View ArticleCoupling efficiency
I'm pretty new to comsol and did most of the optical ray tracing tutorials.My challange is to calculate the light/photon coupling efficyncy in a pmma fiber. I started with a light source and a pmma...
View ArticleFRF using Modal Summation with parametric sweep, can Eigensolutions be stored...
Hi,I am rather new to Comsol and have a question. Currently I am studying stiffened plates with the shell physics of the structural mechanics module and perform a modal analysis and calculation of...
View ArticlePhoto generated carrier concentration simulation
Can anyone tell me the step by step process of simulating photo generated carrier concentration in a 2D silicon substrate?
View ArticleClik here to view.
Minimazation of free energy
Hi I am using comsol to figure out how liquid crystals behave when an electric field is applied.I do this by minimizing the free energy density of the liquid crystals. The PDE to does this is the...
View ArticleTwo-Phase Frequency domain analysis?
I am trying to model the reaction of a bubble to an acoustic wave, and have successfuly done it in time domain.Is there a way to use two-phase flow anaylisis (ideally moving mesh) with a linearized...
View ArticleUnknown Function Or Operator
Hello, I am simulating an induction heating furnace and I am using the surface to surface radiation. When I click compute I get this error : Unknown function or operator. - Name: myreal Knowing that I...
View ArticleExtracting creep model inputs from manufacturer data
Hello,I have been asked to develop an FEA model of a component we are moulding out of glass filled nylon material. The component is shown in the attachment, together with a seal which is moulded into a...
View ArticleHow are pointwise constraints implemented?
Hello,I understand how we can add weak constraints by explicitly adding Lagrange multipliers and multiplying by the constraint expression. I also understand how mathematically we can constrain a degree...
View ArticleQuadratic elements for velocity in COMSOL 4.4
I am trying to simulate free convection in a water glass and I am required to select Discretization section in the Model Builder. But this is not available in the Model Tree for COMSOL 4.4 as...
View ArticleYes/No question about Frequency-Domain Study
In the Settings window of a Frequency-Domain Study Step, under the Study Settings section on the top, one needs to specify a Frequency or a range of Frequencies. If one is running a study for...
View ArticleSkin effect
Hello, I have succesfully set up a DC model of a straight piece of wire with current flowing in it. The study calculates temperature due to Joule heating and potential distribution. Temperature...
View ArticleParticle Tracing for Fluid Flow
Hello,I am quite new to COMSOL and have a rather simple issue. I am trying to use a couple of modules in tandem, specifically "Heat Transfer in Fluids", "Laminar Flow", and "Particle Tracing for Fluid...
View ArticleClik here to view.
Turbine blade analysis [Undefined variable error]
Hello Comsol forums,I've been at this for several days now and can't get it to work. The idea is to model a turbine blade in a jet engine environment, and later apply a thermal barrier coating to see...
View ArticleCoupling Richard's equation with Two phase laminar flow, phase field
Hi,I am trying to model unsaturated flow in soil with the presence of macropore. The model consists of two main domains (i.e., matrix at left and macropore at right). For simulating film flow in...
View ArticleThermal expansion expression
I want to change the coefficient of thermal expansion， but I cannot understand the original expression， who can explain it for me？ Thank...
View Articlesupport
Hi, iam a new user .i need any start up tutorial esspecially in plasmonic waveguide to help me understand how to work with comsol. Thanks in advance.
View ArticleMechano-optics simulation [first mechanical, then optical]
How to observe the mechanical deformation effect on optical property? Say suppose I am exciting a particular frequency on a waveguide, now by pressure/acoustics I am deforming the structure like the...
View ArticleBubbly Flow Model
Hello everyone,I am trying to simulate a multiphase system within a monolithic channel. The point is that my reaction occurs in a liquid state with bubbles forming inside the channel. These bubbles do...
View Article