Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A20: Heat Transport in Condensed Systems I
8:00 AM–10:24 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DCOMP
Chair: Nicola Marzari, Ecole Polytechnique Federale de Lausanne
Abstract: A20.00008 : The worm-LBM: enabling accurate ballistic-diffusive phonon transport*
9:48 AM–10:00 AM
Live
Presenter:
René Hammer
(Simulation, Materials Center Leoben Forschung GmbH)
Authors:
René Hammer
(Simulation, Materials Center Leoben Forschung GmbH)
Verena Fritz
(Simulation, Materials Center Leoben Forschung GmbH)
Natalia Bedoya-Martínez
(Simulation, Materials Center Leoben Forschung GmbH)
We propose the worm-LBM algorithm, which allows for a high number of propagation directions by alternating in time the basic directions described within the next neighbor LBM schemes [1]. Here we will present the algorithm's structure and its accuracy for describing various ballistic-diffusive phonon transport cases.
[1] R. Hammer, V. Fritz, and N. Bedoya-Martínez, "The worm-LBM, an algorithm for a high number of propagation directions on a lattice Boltzmann grid: the case of phonon transport" arXiv preprint arXiv:1911.00180v2 (2020).
*We gratefully acknowledge the financial support under the COMET program within the K2 Center IC-MPPE (Project No 859480). This program is supported by the Austrian Federal Ministries BMK and BMDW, represented by the Austrian FFG, and the federal states of Styria, Upper Austria and Tyrol.
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