Verification of a discontinuous Galerkin fast spectral solver for the full Boltzmann equation

N. Adhikari, B. Morton, A. A. Alexeenko, J. Hu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A fast Fourier spectral method is an efficient technique of solving the Boltzmann collision operator. The fast Fourier spectral method combined with a discontinuous Galerkin spatial discretization offers a highly accurate and high-order solution of the full Boltzmann equation. In this paper, verification of a discontinuous Galerkin fast spectral (DGFS) Boltzmann solver is presented for classical rare fied flow problems, by comparisons with standard rare fied flow solvers; such as direct simulation Monte Carloand Navier-Stokes-Fourier continuum-based solvers. Anormal shock, one-dimensional Couette, and two-dimensional microchannel flows were considered at varying degrees of flow rarefaction.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
EditorsRho Shin Myong, Kun Xu, Jong-Shinn Wu
PublisherAmerican Institute of Physics Inc.
Edition1
ISBN (Electronic)9780735448339
DOIs
StatePublished - Feb 8 2024
Externally publishedYes
Event32nd International Symposium on Rarefied Gas Dynamics, RGD 2022 - Hybrid, Seoul, Korea, Republic of
Duration: Jul 4 2022Jul 8 2022

Publication series

NameAIP Conference Proceedings
Number1
Volume2996
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference32nd International Symposium on Rarefied Gas Dynamics, RGD 2022
Country/TerritoryKorea, Republic of
CityHybrid, Seoul
Period07/4/2207/8/22

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