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 language | English |
|---|---|
| Title of host publication | AIP Conference Proceedings |
| Editors | Rho Shin Myong, Kun Xu, Jong-Shinn Wu |
| Publisher | American Institute of Physics Inc. |
| Edition | 1 |
| ISBN (Electronic) | 9780735448339 |
| DOIs | |
| State | Published - Feb 8 2024 |
| Externally published | Yes |
| Event | 32nd International Symposium on Rarefied Gas Dynamics, RGD 2022 - Hybrid, Seoul, Korea, Republic of Duration: Jul 4 2022 → Jul 8 2022 |
Publication series
| Name | AIP Conference Proceedings |
|---|---|
| Number | 1 |
| Volume | 2996 |
| ISSN (Print) | 0094-243X |
| ISSN (Electronic) | 1551-7616 |
Conference
| Conference | 32nd International Symposium on Rarefied Gas Dynamics, RGD 2022 |
|---|---|
| Country/Territory | Korea, Republic of |
| City | Hybrid, Seoul |
| Period | 07/4/22 → 07/8/22 |
Funding
This work was supported by the National Science Foundation, grant number 1854829.