Liquid droplet displacement on a solid
Hello to everyone, Currently I'm working on the displacement of a liquid on a solid, my goal is to enable the liquid to move from the initial phase to the initial phase (as shown in the attached files)...
View ArticleLivelink Matlab. Running processed data back to comsol
Hello Comsol community, Is there an straight forward way to send modified meshed data back to comsol after processing it with Matlab? Let me explain. I am reading a certain variable from a domain, from...
View Articlehow to change the Batch sweep output result file name
In COMSOL 5.1, If the batch job is generated from a parametric sweep, a unique name that depends on the parameter names and values is automatically created. in my case, there are too many parameters to...
View ArticlePredefined announced variables give zero results
Dear All, I am working on the formation of ultrasonic-standing wave using a piezoelectric device acting on a fluid domain which contains suspended particles that is surrounded by PMMA walls. I have 3...
View ArticleStep-Index Fiber Gaussian Beam
Hi! Can someone explain to me the steps in getting a Gaussian Beam for Step-Index Modelling? I can't seem to get the datas and the bell-shape graph. But I followed the simulation steps exactly. Thanks.
View ArticleVery simple cantilever pull-in voltage problem
Hi, Im having a problem trying to simulate the pull-in behavior of a cantilever. Essentially, Im following the biased_resonator_2d_model but instead of VdcSP I'm using E_est, a variable for Young...
View ArticleProblem: how to ad gas generation in EulerEuler model??
Hi everybody, I'm developing the model of an alkaline cell for electrolysis of water, thus I need to consider the generation of gas at the electrodes that gives a two-phase flow as a result. I'm...
View ArticleTransmission through periodic nano array
Hello all, I am trying to simulate the transmission through the periodic array which is fabricated on ITO coated substrate. According to the theory, this system should give us two peaks one corresponds...
View ArticleTruss structure optimization
hi all, I'm kinda a newbie and i'm trying to optimize a simple 2D truss structure using optimization solver. the objective function is total strain energy of the structure (mod1.truss.Ws_tot) and the...
View ArticleEquation in matrix form for use for MATLAB Livelink
Dear all, This seems to be a pretty simple question but I am struggling to find any help on the topic! I have recently started using COMSOL with the livelink to write a Model Order Reduction in MATLAB....
View ArticleError detected during principal component evaluation
Hi all, what is the meaning of that error message. I simulate a case in nonisothermal flow and use this for a single ac/dc simulation. This works fine. Just before I want to iterate both physics the...
View ArticleThird Harmonic Voltage Simulation/Temperature Oscillation under AC Current
Hey there, I just started using Comsol, so sorry if this question has been answered already, I simply did not find it. My problem is the following: I want to simulate the temperature oscillation of a...
View ArticleConvergence and time step solver
Hi all, How's everyone? :D Anyway, Just want to know, what does that curvy distorted line at the end of the diagram shows? Does it mean I have instability convergence? too large time step? how do I...
View ArticleRegarding Contact modeling in time dependent solver for the simulation of...
Dear all, I am working on the simulation of incremental sheet forming process. It is very non linear structural mechanics problem in which i make a contact between tool and sheet with time dependent...
View ArticleALE Models solved with comsol 5.2
Hi guys , i'm trying to create a model on comsol 5.2 equal to the model on COMSOL_Arbitrary Lagrangian-Eulerian.pdf !!! I do not know a lot about this program, and I can not understand some things ! 1)...
View Articletime-dependent extension of a stationary problem
Hello As you know transient analysis is not available for 3D magnetic field analysis in comsol, I have done my simulation for stationary case, however, I have to perform time-dependant calculations...
View ArticleInstanteneous Jump of Temperature
Hi, COMSOL community. I model the heating of solid (time dependent task). The heating is instaneous. I.e. heat spreads through the solid without any sources but in several (point-like) moments...
View ArticleHow to add inertial lift force and Dean force
Hi everybody, I m doing simulation for inertial focusing. I need to see the effect of inertial lift force and dean force on particle. I m just wanted to know where these forces can be defined. I tried...
View Articlestop criterion adaptive mesh refinement
Hi, I have a question concerning the stop criterion of the adaptive mesh refinement (adaptive solver) algorithm: In the Reference Guide stop criterion is only described by: “Terminate execution if it...
View ArticleFlow focusing microfluidic droplet generator
Hello all, I'm completely new to comsol, and have therefore been looking for instructions on how to generate a flow focus droplet generator simulation. I've been playing around with the t-junction...
View Article