For more information about this meeting, contact Fei Wang, Changhe Qiao.
|Title:||On computer simulation of multiscale processes in porous electrodes of Li-ion batteries|
|Seminar:||CCMA PDEs and Numerical Methods Seminar Series|
|Speaker:||Oleg Iliev, Fraunhofer Institute for Industrial Mathematics, ITWM|
|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 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. MOR and DEIM-MOR algorithms for acceleration of the computations will be discussed. 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, and Y.Efendiev from Texas A&M.|
Room Reservation Information
|Date:||10 / 31 / 2014|
|Time:||03:30pm - 05:00pm|