Rarefied gas flow simulations using high-order gas-kinetic unified algorithms for Boltzmann model equations

ZH Li, AP Peng, HX Zhang, JY Yang - Progress in Aerospace Sciences, 2015 - Elsevier
This article reviews rarefied gas flow computations based on nonlinear model Boltzmann
equations using deterministic high-order gas-kinetic unified algorithms (GKUA) in phase …

Numerical methods for kinetic equations

G Dimarco, L Pareschi - Acta Numerica, 2014 - cambridge.org
In this survey we consider the development and mathematical analysis of numerical
methods for kinetic partial differential equations. Kinetic equations represent a way of …

[图书][B] Direct modeling for computational fluid dynamics: construction and application of unified gas-kinetic schemes

K Xu - 2014 - books.google.com
Computational fluid dynamics (CFD) studies the flow motion in a discretized space. Its basic
scale resolved is the mesh size and time step. The CFD algorithm can be constructed …

Rarefied gas effect in hypersonic shear flows

J Chen, H Zhou - Acta Mechanica Sinica, 2021 - Springer
Recently, as aerodynamics was applied to flying vehicles with very high speed and flying at
high altitude, the numerical simulation based on the Navier–Stokes (NS) equations was …

Can we find steady-state solutions to multiscale rarefied gas flows within dozens of iterations?

W Su, L Zhu, P Wang, Y Zhang, L Wu - Journal of Computational Physics, 2020 - Elsevier
One of the central problems in the study of rarefied gas dynamics is to find the steady-state
solution of the Boltzmann equation quickly. When the Knudsen number is large, ie the …

Unified gas-kinetic wave-particle methods. II. Multiscale simulation on unstructured mesh

Y Zhu, C Liu, C Zhong, K Xu - Physics of Fluids, 2019 - pubs.aip.org
In this paper, we present a unified gas-kinetic wave-particle (UGKWP) method on
unstructured mesh for the multiscale simulation of continuum and rarefied flow. Inheriting …

[HTML][HTML] A comparative study of discrete velocity methods for low-speed rarefied gas flows

P Wang, MT Ho, L Wu, Z Guo, Y Zhang - Computers & Fluids, 2018 - Elsevier
In the study of rarefied gas dynamics, the discrete velocity method (DVM) has been widely
employed to solve the gas kinetic equations. Although various versions of DVM have been …

Solving the Boltzmann equation deterministically by the fast spectral method: application to gas microflows

L Wu, JM Reese, Y Zhang - Journal of Fluid Mechanics, 2014 - cambridge.org
Based on the fast spectral approximation to the Boltzmann collision operator, we present an
accurate and efficient deterministic numerical method for solving the Boltzmann equation …

Unified gas-kinetic scheme for diatomic molecular simulations in all flow regimes

S Liu, P Yu, K Xu, C Zhong - Journal of Computational Physics, 2014 - Elsevier
A unified gas-kinetic scheme (UGKS) is constructed for both continuum and rarefied flow
computations. The underlying principle for the development of UGKS is the direct modeling …

On the apparent permeability of porous media in rarefied gas flows

L Wu, MT Ho, L Germanou, XJ Gu, C Liu… - Journal of Fluid …, 2017 - cambridge.org
The apparent gas permeability of a porous medium is an important parameter in the
prediction of unconventional gas production, which was first investigated systematically by …