Stand alone app and link between app and model
Hi, I'm building an application for my model. In the application I've given the option to enter a location of a notepad file the model uses to interpolate the specific heat data. Now, I'm getting an...
View Article*This Friday, June 15* Early Abstract Submission Deadline for COMSOL...
Hello COMSOL Users,This Friday, June 15, is the early bird abstract submission deadline for the COMSOL Conference 2018. Submitting your abstracts by this date will qualify you for a reduced...
View ArticleFinding Guided Modes of Photonic Crystal Fiber using Wave Optics Module
I am looking to find the guided modes of a hollow core photonic crystal fiber using the Wave optics Module in COMSOL 5.3a. Since the core is filled with air, I expect the mode to have an effective...
View Articleissue with the clipped rectangular pulse for input port
Hi thereI am trying to rebuild the RF_microstrip _line_crosstalk, the issue I have is that the generated rectangular pulse is clipped a little bit, anybody knows what can cause that, please
View ArticleCalculating the Volume Flow through a pipe
Hey all.i want to calculate the volume flow through a pipe.Theoretically, there are two possible ways: Multiplying the flow speed average (component in flow direction) with the cross section, or...
View Articleno displacement in reult section
the model which i am working on is similar to BAW resonator. I have to measure the displacement after calculating the eigen frequency where i can measure the displacement but after frequency domain...
View ArticleElectrical impedance of a piezoelectric material
Hi, My model consists simply of the harmonic analysis of a ceramic material with an imposed potential (inverse effect). I wonder how to build the electrical impedance graph, amplitude and phase. To...
View ArticleCan't find time variable in Time-independent
Hi all, I'm a greenhand in using Comsol.Recently，I'm very confused to specify time variable in Time-independent and then use it in model.I use the Livelink for Matlab module.In my model,I add a...
View ArticlePeriodic boundary condition in a capacitor array
On the attached model, I applied the periodic continuity condition to the 2 pairs of sides of a capacitor. The shape of capacitor unit cell is rectangular with a couple of etched cylindrical holes in...
View ArticleEffect of Gravity
Hello, can anyone please let me know what is the function of Gravity in CFD module and how does it work? Thank you !
View ArticleEffective Stress Tensor
Hi; I am trying to simulate stress concentration around the borehole. I have defined the in situ stress tensor by the initial strain and stress subnode, and the pore pressure by the external stress...
View Articleproblem about parallel computing in COMSOL
i am doing structural optimization by Genetic algorithm using COMSOL with Matlab so i need to run many iteration and cost too much time. i want to know if there are some "parallel computing" function...
View ArticleImplicit solver in COMSOL
Hi all, I am new to COMSOL.My research needs to couple the behavior of Mechanical Magneto thermal effect.I have non linear constitutive relation for magnetostrictive material which is the funtion of...
View Articlehow to eatablish a 3D EM plane wave for multilayer films
hi everybody, i'm start to learn comsol, and i want to eastablish a planwave in 3D, the structure has multilayer, there has a example only on layer and use port condition to difine EM, but I don't know...
View ArticleSingularity in tin_melting_front Example in the Library Application
Hello, In the Library Application, tin_melting_front, I apply the same model for longer time (40,000 s instead of just 10,000 s) and it just does NOT converge at around 30,000 s (look at graphs...
View ArticleSimulation of a Shape Memory Alloy wire in COMSOL.
HI, I am S.Naveenkumar, I am Simulating the Shape Memory Effect for Wire in COMSOL. But The Solution is not Converging for my Applied condition. Can You Please help me in this problem.I used Austenite...
View ArticleWay to plot CFL number as a function of number of iterations?
Hello all,I want to analyse the behaviour of pseudo time step as the simulation progresses. Is there a way to plot Pseudo time-stepping CFL-ratio vs iteration number? Pseudo time-stepping CFL-ratio is...
View ArticleElectrical Circuit
Hi, I'd like to know what is the difference between the external I vs U and U vs I?Regards, Rute Pinelo
View ArticleCoupling Frequency Driven Input with Time Dependent Behavior
Hi,I am running a model of a container with water in it. The container is subjected to a g-load and frequency, where the frequency is set to vary from 50 Hz to 350 Hz. ANd, I am trying to obatin the...
View ArticleAlternative to multibody dynamics module
The COMSOL at my university does not have Multibody dynamics module. What would be some good alternatives to that? Thanks
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