Seminars & Events

Mathematics and Computer Science Division
"Meeting the Many Challenges of Solving the Boltzmann Transport Equation"

DATE: February 3, 2012
TIME: 10:30 AM - 11:30 AM
SPEAKER: Karl Rupp, Wilkinson Fellowship Interviewee
LOCATION: Building 240, Seminar Room 4301, Argonne National Laboratory
HOST: Mihai Anitescu

Description:
Accurate simulation of carrier transport in semiconductor devices requires the solution of the Boltzmann transport equation (BTE), for which a deterministic solution approach based on a spherical harmonics expansion (SHE) is considered. The SHE method leads to a system of partial dierential equations, which is solved numerically using a nite volume scheme. First, recent algorithmic improvements of the SHE method are discussed. Then, the components of the library-centric C++ simulation framework created for the simulation of state-of-the-art semiconductor devices using the SHE method are presented: ViennaGrid provides a exible grid management and allows for dimension-independent programming. ViennaData separates data storage from the grid data structure and allows for associating quantities of arbitrary type with grid elements. ViennaCL provides GPU-accelerated iterative solvers and preconditioners for the solution of the sparse linear systems of equations obtained from the SHE method. The interaction of these free open-source libraries in the device simulator Vienna SHE is outlined. Finally, a brief overview of current and future research activities is given.

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