Superfilling only inside the trench
I need to modify the COMSOL 4.3 "Superfilling" verification model (provided in the Electrodeposition examples), in such a way as to consider only the inside walls (two vertical and one horizontal in...
View ArticleVanadium Redox Flow Battery
Dear COMSOL Community I have a question regarding the example of the Vanadium Redox Flow Battery (www.comsol.com/showroom/documentation/mode​l/14153/). I have tried to simulate it but I get following...
View ArticleTime solver dynamics - advice
I'm in "currents and voltages" applying a current density pulse within a copper short going through the glass dielectric of a spherical copper capacitor. This is a biological equivalent, there is no...
View ArticleLarge Deformation Analysis- Convergence Problem
Hi All, I encounter a convergence problem in my COMSOL model. It is greatly appreciated if someone help me to solve this problem. As you can see in the attached model, I am modelling a cartilage using...
View ArticleModeling a Kerr Effect
Hello. I want to model a material with birefringence that depends on the electric field inside the medium, similar to the Kerr effect where the index depends on the square of the field. This is...
View ArticleGeometry variation within Time-Dependent solving.
Hello, I was wondering if it's possible to change geometry according to time ( via internal or external function(MatLab)) ? ie: Making a block depth function of time.
View ArticleWork on COMSOL through MATLAB?
Hi, I would like to run COMSOL through MATLAB but don't understand how? For example when I have saved a COMSOL simulation as M-file and tries to open it in MATLAB it won't open and I am not sure how to...
View ArticleRecoverable error in residual, but solver could not recover.
Recoverable error in residual, but solver could not recover. What is the meaning of this error ?
View ArticleHow to save deformed geometry so that it can be used as new initial geometry...
Hi. I am looking the ways to save the deformed geometry at the end of analysis, and i would like to use it as a completely new initial geometry for further analysis, by clearing out the previous...
View ArticleSolving a system of coupled PDE
Hi, I try to solve a system of coupled PDE with Comsol. Unfortunately, I have problems to choose a suitable solver. Details of my question and a model file are attached. I would be very grateful for...
View ArticleIncorporating Lagrange Multipliers
Hello again, Thanks to the help of those on the forum I was able to incorporate weak constraints to get accurate flux calculations in my diffusion models. However, I am trying to understand how exactly...
View ArticleDeformed Geometry
Hi all, I have a lo of questions and responses related to that but I haven't been able to find a proper solution to the problem I have. Basically, I have a first geometry (domains 1 and 2) which is...
View ArticleMass in not conserved even in conservative form, multiphase flow of water...
Hello everybody, I have previously posted on a problem I was trying to simulate about multiphase flows (Multiphase Flow LS - Air Bubble in Water Cylinder - Conservative forms fails) and I have tried...
View ArticleMoving Mesh ALE - Applied to unconfined groundwater flow with unknown water...
Hi, I am trying to set up a model that was presented in the paper presented at the 2012 Conference in Milan: Simulation of Pumping Induced Groundwater Flow in Unconfined Aquifer Using Arbitrary...
View ArticleBending Loss Calculation Procedure For Photonic Crystal Fiber
Hi, I am a new user of Comsol Multiphysics version 4.2. My undergrad thesis topic given by my supervisor is about bending loss calculation using comsol.please help me with the guideline how can i make...
View ArticleSolving a 3rd order polynomial
Good day, When using the Distributed Algebraic Equation physics, is there a way to solve a higher order polynomial for a variable and be able to acquire all of its roots/solutions simultaneously and be...
View ArticleCoupling 1D Pipeflow to 2D axisymmetric Porous Media
I am working on coupling 1D pipeflow to 2D axisymmetric porous media. The coupling is peformed by averaging the 2D boundary to the 1D point and integrating the 1D point to the 2D boundary. The coupling...
View ArticleApply load to a deformed mesh/geometry
I have applied load to a hypeelastic material model for a stationary structural analysis and I have gained the deformed result. I am trying to apply the second load to the deformed boundary on the...
View ArticleSuperfilling only inside the trench
I need to modify the COMSOL 4.3 "Superfilling" verification model (provided in the Electrodeposition examples), in such a way as to consider only the inside walls (two vertical and one horizontal in...
View ArticleTime solver dynamics - advice
I'm in "currents and voltages" applying a current density pulse within a copper short going through the glass dielectric of a spherical copper capacitor. This is a biological equivalent, there is no...
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