simulation problem
Hello, I'm running a simulation for 60 ms but my simulation is not running after 10.85 ms. Could anyone help? Regards, Ganesh
View ArticleImproving Robustness in consideration of changing material properties
Hello Comsol community! I have successfully built the skeleton of my model! However, when I alter the material properties (dynamic viscosity and density in this case), the model stops working. I mean...
View ArticleCannot get Creep Strain with reasonable Creep Strain Rate? time integration...
Hello all, I have been struggled with a weird problem for quite a while: I am using a user-defined Creep rate tensor in the the Solid Mechanics Module, in order to simulate material response that...
View ArticleMoving solid particles in a laminar flow
Hello, I want to simulate moving solid particles in a laminar flow with some obstacles (vertical columns) in their way. What I want to see is that how they get trapped in the gaps between the columns...
View ArticleCombining parametric and auxiliary sweep
Hello everybody, I am having some troubles with a quite simple simulation. I must simulate the behaviour of a thin membrane which is stretched by means of a displacement applied to one of its ends. I...
View ArticleVibrating Beam in Fluid Flow
Hie I am trying to simulate Application ID: 9408 I have followed the same instruction but getting these following errors Please Help!! Undefined variable. - Variable: step1 - Geometry: geom1 - Boundary: 1
View ArticleConvergence of non-isothermal flow simulation stationary
Hello, i have problems with my simulation of non-isothermal flow (including surface-to-surface radiation, but i think the problem is the fluid flow). The fluid flow is considered to be laminar. The...
View ArticleTwo physics simulation: Electro-Optics
I'm running Electro-optic simulations and I've coupled two physics, namely RF and Wave Optics. I'm running the Mode Analysis in the RF Physics to solve for 2D electric field given my particular...
View ArticleValidazione prova di trazione
Buongiorno. Sono uno studente di ingegneria meccanica in procinto di laurearsi (mancano veramente pochi giorni alla discussione della tesi). Il tutto verte sulla caratterizzazione di un materiale...
View ArticleValidation tension test
Good morning. I have to solve a simple problem as fast as possible before my engineering degree. I chose Comsol to simulate the behavior of a orthotropic material specimen during a uniaxial tension...
View ArticleHelp required in Electric field (AC/DC Module) simulation
I am an absolute beginner in COMSOL and need all the help I can for my project which I am doing in COMSOL. I have tried a lot to solve it on my own, but failing to do so I really hope the COMSOL...
View ArticleValues of variables not solved for: ...
Hi all! I have two physics, both of them are time-dependet study. My question: If I want to couple these two physics together , there are two options: Values of variables not solved for:...
View ArticleToneburst signal
hello, How could I create a toneburst exitation signal or a simple sinus exitation wave signal in comsol 3.5a? Thanks
View ArticleLimit dependent Variables
Hey COMSOL-Experts, I want to limit the dependent variable s for an intervall ( 0<s<1). How do I do this in COMSOL 4.1? Thanks for help. Best regards David
View Articleconstraining dependent variable
Good day: I am trying to find the most effective method of implementing a constraint on a dependent variable. I am solving a classical diffusion equation (using Equation based modeling)of concentration...
View ArticleMoving solid particles in a laminar flow
Hello, I want to simulate moving solid particles in a laminar flow with some obstacles (vertical columns) in their way. What I want to see is that how they get trapped in the gaps between the columns...
View ArticleInertial Forces Representation in a Microfluidics Module
Hello, I am working on a simulation of a microfluidic system that involves both the effect of dean flow and inertial (lift) forces on particles travelling inside a microchannel. To my knowledge, COMSOL...
View ArticleReduce Degree of Freedom antenna array
Hello, I am using RF module and have a created a model of antenna array, with which I would like to observe scattering of EM waves when penetrating dielectric material (permittivity 50-70) The antenna...
View Articlesolver questions for multiphysics problem with time dependency
Hi everyone! I am running the simulations with a fully coupled solver. The physics i use are moving mesh and laminar 2phase flow (phase field). I have a couple of doubts regarding and its listed below:...
View ArticleEigenvalue Solver Warning
Hello, I am running the eigenfrequency study in the Acoustics module, and received a warning in Comsol that I have previously not encountered:"Extra interior eigenvalue found. Decrease the size of the...
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