2026-10-16T01:27:57Z https://data.mendeley.com/oai

oai:data.mendeley.com/rzn86w7t3p.1 2021-05-06T06:20:43Z

Ballantyne, John MCBTE: A variance-reduced Monte Carlo solution of the linearized Boltzmann transport equation for phonons Mendeley Data MCBTE solves the linearized Boltzmann transport equation for phonons in three-dimensions using a variance-reduced Monte Carlo solution approach. The algorithm is suited for both transient and steady-state analysis of thermal transport in structured materials with size features in the nanometer to hundreds of microns range. The code is portable and integrated with both first-principles density functional theory calculations and empirical relations for the input of phonon frequency, group velocity, and mean free path required for calculating the thermal properties. The program outputs space- and time-resolved temperature and heat flux for the transient study. For the steady-state simulations, the frequency-resolved contribution of phonons to temperature and heat flux is written to the output files, thus allowing the study of cumulative thermal conductivity as a function of phonon frequency or mean free path. We provide several illustrative examples, including ballistic and quasi-ballistic thermal transport, the thermal conductivity of thin films and periodic nanostructures, to demonstrate the functionality and to benchmark our code against available theoretical/analytical/computational results from the literature. Moreover, we parallelize the code using the Matlab Distributed Computing Server, providing near-linear scaling with the number of processors. Computational Physics Pathak, Abhishek Pawnday, Avinash Roy, Aditya Prasad Aref, Amjad J. Dargush, Gary F. Bansal, Dipanshu Dataset doi:10.17632/rzn86w7t3p.1 oai:data.mendeley.com/rzn86w7t3p.1 GNU Public License Version 3 http://www.gnu.org/licenses/gpl-3.0.en.html https://data.mendeley.com/datasets/rzn86w7t3p 2021-05-06T06:20:43Z