Department of Mathematics

CoSy Lunch Seminar

  • Date: 10/18/2017 at 12:15 PM 1:00 PM
  • Location: Ångströmlaboratoriet, Lägerhyddsvägen 1 Å4003
  • Lecturer: Oleg Iliev, Fraunhofer Institute for Industrial Mathematics, ITWM
  • Organizer: CIM
  • Contact person: Joel Dahne
  • Phone: 0762020507
  • Seminarium

On computer simulation of multiscale processes in porous electrodes of Li-ion batteries; Speaker: Oleg Iliev, Fraunhofer Institute for Industrial Mathematics, ITWM

18 October
Speaker: Oleg Iliev,  Fraunhofer Institute for Industrial Mathematics, ITWM
Title: On computer simulation of multiscale processes in porous electrodes of Li-ion batteries
Place: Å4003
Time: 12:15 -- 13:00
Abstract:
Li-ion batteries are widely used in automotive industry, in electronic
devices, etc. In this talk we will discuss challenges related to the
multiscale nature of batteries, mainly the understanding of processes in
the porous electrodes at pore scale and at macroscale. A software tool
for simulation of isothermal and non-isothermal electrochemical
processes in porous electrodes will be presented. The pore scale
simulations are done on 3D CT images of porous electrodes, or on computer
generated 3D microstructures, which have the same characterization as
real porous electrodes. Finite Volume and Finite Element algorithms for
the highly nonlinear problems describing processes at pore level will be
shortly presented. Model order reduction, MOR, empirical interpolation
method, EIM-MOR algorithms for acceleration of the computations will be
discussed, as well as the reduced basis method for studying parameters
dependent problems. Next, homogenization of the equations describing the
electrochemical processes at the pore scale will be presented, and the
results will be compared to the engineering approach based on Newman’s
1D+1D model. Simulations at battery cell level will also be addressed.
Finally, the challenges in modeling and simulation of degradation
processes in the battery will be discussed and our first simulation
results in this area will be presented.

This is joint work with A.Latz (DLR), M.Taralov, V.Taralova, J.Zausch,
S.Zhang from Fraunhofer ITWM, Y.Maday  from LJLL, Paris 6 and Y.Efendiev
from Texas A&M.