Error on simulating Lithium-Ion tutorial
Hello, i was trying to do the tutorial of simulating a 2D lithium-Ion battery (www.comsol.com/showroom/gallery/9981/), b ut when i try to execute my simulation i get the following errors: Failed to...
View ArticleModelling magnetic field for capacitor.
Hi, I am working on the project of the capacitor. Recently I have succesfully simulated electric field but now I would like to simulate magnetic field and I unfortunatelly have no idea how to make it....
View Articleout of memory error
I am solving problem related to PEMFC . I am getting out of memory error. please help me in this regard.
View ArticleOverpotential Definition
In the user guide for the electrochemistry branch, overpotential is often defined as the difference between electric and electrolyte potential and the reversible potential, i.e. eta = phi_s - phi_l -...
View ArticleHelp needed for intercalation stress at COMSOL
Hi C.Lim, I am, working on same problem i.e. intercalation stress. I followed your suggestion like putting partial molar volume as expansion coefficient and concentration as temperature. However, my...
View ArticleHow could i do to see the data sheet of my model?
Hi, I´m working in a 2D model of ion diffusion and I need to see a data sheet of the concentration profile. So, what should I do to see it?
View Article[Tertiary Current Distribution] Electrode Current (boundary condition)
Hi, I'm new to COMSOL and numerical modeling and I'm currently trying to understand the "Electrode Current" node in the "Tertiary Current Distribution" physics using the v_flow_battery example from the...
View ArticleDeposition within a porous electrode
I am building a (1D) model of a battery in which an insoluble, insulating product is deposited in the pores of a porous cathode. It uses tertiary currents, with a PDE to give the deposition rate. The...
View ArticleElectrolyte Solution
Is there any option to use an electrolytic solution with specific electrolyte, concentration and/or pH value in COMSOL modelling, e.g. 0.1M NaCl solution with pH value of say 6. Please help me.
View ArticleHow to use PART of the solution in step 1 as initial value for step 2
I am doing some battery simulation, not using the battery module but totally depending on the mathematics modules of COMSOL. I used eight ODE and DAE interfaces to describe the process. Now I have a...
View Articleincreasing number of Charge and discharge cycle
How do I increase or decrease the number of charge and discharge cycle. It would be a really great help if somebody would help me, thanks.
View ArticleFailed to evaluate variable Jacobian
Hi, I'm trying to implement Lithium-ion battery 2D tutorial on a 3D structure. I followed all steps but COMSOL gives me this error: Failed to evaluate variable Jacobian. - Variable:...
View ArticleHow to couple solid domain to fluid domain with continuously changing interface
Hello all, I am using COMSOL 4.4 and trying to solve a transient problem involving a fluid phase in contact with a solid phase. The interface between these two domains change with time due to chemical...
View ArticleCoupling variables
Hello, I am attempting to model a complex physical processes in batteries where there is a domain representing the electrode that contains active materials. The governing equations in the active...
View ArticleExpanding the Capacity Fade tutorial model - Convergence issues
Hello, I've been working with the Capacity Fade lithium ion tutorial model, and I've been trying to expand the parametric study from the default 1-10 cycles to a maximum of 30 cycles. I usually end up...
View Articletriangular or conical loading
Hello to all, I was reading the COMSOL blog and I fouand this great post :www.comsol.com/blogs/join-solutions-comsol-multiphysics/ Bu I was wondering how to apply a triangular load on the edge (in a 2D...
View ArticleLi 1D battery simulation-time varying current loads
I have a time varying current load signal from a motor (simulink) that I would like to apply to my battery simulation. I am fairly new to Comsol but have built the 1D model example as a trial, but is...
View ArticleInitial Value problem. Please help
Hi all, I am trying to simulate the vanadium ion crossover for a vanadium redox flow battery. However, there seems to be a initial value inconsistency that is preventing me from solving the model. I am...
View ArticleSmoothing battery current changes
I've been having issues with the capacity fade model and I think I may have narrowed down the problem. See the model in question here: www.comsol.com/model/capacity-fade-of-a-li-ion-battery-12667 I am...
View ArticlePEM-FC, COMSOL
Hi, i have a question in my heat and mass transfer book and i want to do it on COMSOL, but iam still new on COMSOL, so can anyone tell me the steps that i should go through inorder to do the question...
View Article