A computational strategy for nonlinear coupled constitutive relations of rarefied nonequilibrium flows on unstructured grids

S Zeng, Z He, W Zhao, W Chen - Aerospace Science and Technology, 2023 - Elsevier
Abstract The Navier-Stokes-Fourier (NSF) equations are no longer valid in high-Knudsen
and high-Mach flows, where the local thermodynamically equilibrium assumption fails, while …

A three-dimensional modal discontinuous Galerkin method for the second-order Boltzmann-Curtiss-based constitutive model of rarefied and microscale gas flows

S Singh, A Karchani, T Chourushi, RS Myong - Journal of Computational …, 2022 - Elsevier
A three-dimensional mixed modal discontinuous Galerkin (DG) method based on tetrahedral
meshes was developed for simulating all flow regimes from subsonic to hypersonic rarefied …

[HTML][HTML] Numerical simulation of hypersonic thermochemical nonequilibrium flows using nonlinear coupled constitutive relations

Z Shuhua, Y Zhenyu, Z Wenwen, C Weifang - Chinese Journal of …, 2023 - Elsevier
To predict aeroheating performance of hypersonic vehicles accurately in thermochemical
nonequilibrium flows accompanied by rarefaction effect, a Nonlinear Coupled Constitutive …

Numerical simulation of lateral jet interaction with rarefied hypersonic flow over a two-dimensional blunt body

G Zhao, C Zhong, S Liu, J Chen, C Zhuo - Physics of Fluids, 2023 - pubs.aip.org
Reaction Control System (RCS) is a direct force control system that successfully adjusts a
craft's attitude or orbit using the reaction force created by jet flow. RCS is frequently …

Computational study of lateral jet interaction in hypersonic thermochemical non-equilibrium flows using nonlinear coupled constitutive relations

S Zeng, J Yang, W Zhao, Y Huang, Z Jiang, W Chen - Physics of Fluids, 2023 - pubs.aip.org
The present study reports the numerical analyses of lateral jet interaction around a Terminal
High Altitude Area Defense-type (THAAD-type) model in hypersonic rarefied flows, with the …

The implementation of the three-dimensional unified gas-kinetic wave-particle method on multiple graphics processing units

G Fan, W Zhao, S Yao, Z Jiang, W Chen - Physics of Fluids, 2023 - pubs.aip.org
To further improve the efficiency of the unified gas-kinetic wave-particle (UGKWP) method in
hypersonic rarefied non-equilibrium flows, particularly the particle simulation process, we …

Numerical simulation of hypersonic reaction flows with nonlinear coupled constitutive relations

Z Yuan, W Zhao, Z Jiang, W Chen - Aerospace Science and Technology, 2021 - Elsevier
As all known, there exists extremely thermal and chemical non-equilibrium phenomenon in
hypersonic flows. Much effort has been put into the development of computational models …

[HTML][HTML] Slip boundary conditions for rough surfaces

WU Hui, C Weifang, Z Jiang - Chinese Journal of Aeronautics, 2023 - Elsevier
The velocity slip and temperature jump for a two-dimensional rough plate under hypersonic
conditions were analyzed using the Direct Simulation Monte Carlo (DSMC) method. Surface …

[图书][B] A unified computational fluid dynamics framework from rarefied to continuum regimes

K Xu - 2021 - cambridge.org
This Element presents a unified computational fluid dynamics framework from rarefied to
continuum regimes. The framework is based on the direct modelling of flow physics in a …

Thermal and flow characteristics of nonequilibrium monatomic, diatomic, and polyatomic gases in cylindrical Couette flow based on second-order non-Navier–Fourier …

T Chourushi, A Rahimi, S Singh, O Ejtehadi… - International Journal of …, 2022 - Elsevier
The thermal and flow characteristics of nonequilibrium monatomic, diatomic, and polyatomic
gases in cylindrical Couette flow are investigated using first-and second-order Boltzmann …