SEMINAR: Continuum Thermodynamics of Chemically Reacting Mixtures for a Multiphysics Simulation of Li-ion Batteries
Thermodynamics and chemistry play an important role in a battery cell. Not only on electrodes but also within the electrolyte, we need a better understanding for simulating the thermomechanics as a consequence of diffusing ions. Mostly, a diffusion equation is used with a flux term given as a constitutive equation depending on the concentration. In this setting, introducing thermomechanical effects is a big challenge and honestly, from a thermodynamical point of view, not accurate. In this talk we present a brief explanation of theory of mixtures and the thermodynamics for obtaining all necessary constitutive equations. This strategy delivers the governing equations as a set of nonlinear and coupled partial differential equations in space and time, which is indeed possible to solve by using open-source codes.
Dr. Bilen Emek Abali
Postdoctoral Associate, Technische Universitaet Berlin (Germany)
B. E. Abali has received the B. Sc. and M. Sc. degrees in mechanical engineering from Istanbul Technical University (Turkey) and Munich Technical University (Germany), respectively. He holds the Doctor of Engineering degree from the Institute of Mechanics at the Technische Universitaet Berlin (Germany). After working as a postdoctoral fellow at the Department of Mechanical Engineering at the University of California, Berkeley, he is working as a lecturer and senior researcher at the Technische Universitaet Berlin, for details see http://www.lkm.tu-berlin.de/bea
Dr. Abali has gained experience in continuum mechanics and solving of nonlinear and coupled partial differential equations by using the finite element method. He tries to build a "computational reality" by exploiting continuum mechanics and thermodynamics. This approach is based on the field equations derived directly from the balance equations augmented by the necessary constitutive equations. Although this method is the usual way in the rational continuum mechanics, it has not been applied for computational mechanics, yet. His book "Computational Reality: Solving Nonlinear and Coupled Problems in Continuum Mechanics" has been published by Springer last year. Furthermore, he has published many scientific manuscripts in peer-reviewed journals, for details see http://bilenemek.abali.org