- Date & Time: Friday, May 13, 2016; 12:00 PM
Speaker: Oleg Iliev, Fraunhofer Institute for Industrial Mathematics, ITWM
Research Area: Dynamical Systems
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 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.
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- Date: March 31, 2016
Awarded to: Andrew Knyazev
Research Areas: Control, Optimization, Dynamical Systems, Machine Learning, Data Analytics, Communications, Signal Processing
Brief - Andrew Knyazev selected as a Fellow of the Society for Industrial and Applied Mathematics (SIAM) for contributions to computational mathematics and development of numerical methods for eigenvalue problems.
Fellowship honors SIAM members who have made outstanding contributions to the fields served by the SIAM. Andrew Knyazev was among a distinguished group of members nominated by peers and selected for the 2016 Class of Fellows.
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- Date: March 14, 2016 - March 18, 2016
Where: Institute for Mathematics and its Applications
Research Area: Dynamical Systems
Brief - Mouhacine Benosman will give an invited talk about reduced order models stabilization at the next IMA workshop 'Computational Methods for Control of Infinite-dimensional Systems'.
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- Date: January 25, 2013
Where: Journal of Computational and Nonlinear Dynamics
Research Area: Dynamical Systems
Brief - The article "Characterization of Flow-Magnetic Field Interactions in Magneto-Hydrodynamic Turbulence" by Richard, J.C., Kumar, G., Kalmar-Nagy, T. and Girimaji, S.S. was published in Journal of Computational and Nonlinear Dynamics.
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- Date: December 1, 2012
Where: AIP Chaos
Research Area: Dynamical Systems
Brief - The article "Topological Chaos, Braiding and Bifurcation of Almost-cyclic Sets" by Grover, P., Ross, S., Stremler, M. and Kumar, P. was published in AIP Chaos.
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- Date: August 13, 2012
Where: AIAA/AAS Astrodynamics Specialist Conference
Research Area: Dynamical Systems
Brief - The paper "Efficient Estimation and Uncertainty Quantification in Space Mission Dynamics" by Grover, P. and Sato, Y. was presented at the AIAA/AAS Astrodynamics Specialist Conference.
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- Date: January 29, 2012
Where: AAS/AIAA Space Flight Mechanics Meeting
Research Area: Dynamical Systems
Brief - The paper "Optimized Three-Body Gravity Assists and Manifold Transfers in End-to-End Lunar Mission Design" by Grover, P. and Andersson, C. was presented at the AAS/AIAA Space Flight Mechanics Meeting.
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