About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Mesoscale Phenomena in Functional Polycrystals and Their Nanostructures
|
Presentation Title |
Modeling Thermoelectric Properties of Polycrystalline Materials at Mesoscale |
Author(s) |
Dharma Raj Basaula, Mohamad Daeipour, Lukasz Kuna, John Mangeri, Boris Feygelson, Serge Nakhmanson |
On-Site Speaker (Planned) |
Dharma Raj Basaula |
Abstract Scope |
A finite element method-based approach has been developed for evaluating the thermoelectric properties of polycrystalline materials at the mesoscale. This approach was first validated for isotropic systems by simulating effective Seebeck effect in a thermocouple and Peltier cooling at an interface between two dissimilar materials, obtaining good agreement with prior experimental or computational results. The developed approach was then used to model coupled heat and electrical current flow through an anisotropic polycrystalline material, providing local temperature and electric potential distributions under different applied conditions. This computational framework establishes the foundation necessary to elucidate the intricacies of coupled thermal and electric conduction through geometrically complex materials, including polycrystals, nanostructures and nanocomposites, and could provide new insights for improvement of their operational efficiency. |