59 citations · 226 across the 27 of their papers we have counts for
27 papers
The extended gas-kinetic theory from Pullin equation: the relaxation rates, transport coefficients and model equation
Sha Liu, Ningchao Ding, Ming Fang +4
The Borgnakke-Larsen model, widely used in rarefied flow predictions, serves as the mainstream energy-exchange kernel for polyatomic gases. However, it lacks integrability and does…
Phenomenological energy exchange of diatomic gases: Comparison of Pullin and Borgnakke-Larsen models in direct simulation Monte Carlo method
Hao Jin, Sha Liu, Ningchao Ding +4
In hypersonic rarefied flows, insufficient intermolecular collisions cause significant deviations between translational and rotational temperatures, leading to strong thermal noneq…
A simplified unified wave-particle method for diatomic gases with rotational and vibrational non-equilibrium
Sirui Yang, Chengwen Zhong, Ningchao Ding +4
The hypersonic flow around near-space vehicles constitutes a multi-scale flow problem. Due to insufficient molecular collisions to achieve equilibrium, rarefied gas effects are pre…
A hybrid numerical algorithm based on the stochastic particle Shakhov and DSMC method
Hao Jin, Sha Liu, Sirui Yang +3
The Direct Simulation Monte Carlo (DSMC) method is widely employed for simulating rarefied nonequilibrium gas flows. With advances in aerospace engineering and micro/nano-scale tec…
A novel Cercignani-Lampis boundary model for discrete velocity methods in predicting rarefied and multi-scale flows
Jianfeng Chen, Sha Liu, Rui Zhang +5
To extend the discrete velocity method (DVM) and unified methods to more realistic boundary conditions, a Cercignani-Lampis (CL) boundary with different momentum and thermal energy…
Hypersonic wave wall flow based on gas kinetic method
Yining Yang, Rui Zhang, Jianfeng Chen +4
The transition of hypersonic boundary layer can lead to a several-fold increase in surface heat flux and skin friction for the aircraft, significantly impacting its flight performa…
High-order gas-kinetic scheme with TENO class reconstruction for the Euler and Navier-Stokes equations
Junlei Mu, Congshan Zhuo, Qingdian Zhang +2
The high-order gas-kinetic scheme(HGKS) with WENO spatial reconstruction method has been extensively validated through many numerical experiments, demonstrating its superior accura…
An efficient high-order gas-kinetic scheme with hybrid WENO-AO method for the Euler and Navier-Stokes solutions
Junlei Mu, Congshan Zhuo, Qingdian Zhang +2
The high-order gas-kinetic scheme (HGKS) features good robustness, high efficiency and satisfactory accuracy,the performaence of which can be further improved combined with WENO-AO…
A conservative implicit scheme for three-dimensional steady flows of diatomic gases in all flow regimes using unstructured meshes in the physical and velocity spaces
Rui Zhang, Sha Liu, Jianfeng Chen +2
A computationally accurate and efficient numerical method under a unified framework is crucial to various multi-scale scientific and engineering problems. So far, many numerical me…
A global adaptive velocity space for general discrete velocity framework in predictions of rarefied and multi-scale flows
Jianfeng Chen, Sha Liu, Rui Zhang +3
The rarefied flow and multi-scale flow are crucial for the aerodynamic design of spacecraft, ultra-low orbital vehicles and plumes. By introducing a discrete velocity space, the Bo…
Multiple solutions of nonlinear coupled constitutive relation model and its rectification in non-equilibrium flow computation
Junzhe Cao, Sha Liu, Chengwen Zhong +2
In this study, the multiple solutions of Nonlinear Coupled Constitutive Relation (NCCR) model are firstly observed and a way for identifying the physical solution is proposed. The…
Unified gas-kinetic scheme with simplified multi-scale numerical flux for thermodynamic non-equilibrium flow in all flow regimes
Rui Zhang, Sha Liu, Chengwen Zhong +1
In this paper, a unified gas-kinetic scheme (UGKS) with simplified multi-scale numerical flux is proposed for the thermodynamic non-equilibrium flow simulation involving the excita…
A gas-surface interaction algorithm for discrete velocity methods in predicting rarefied and multi-scale flows: For Maxwell boundary model
Jianfeng Chen, Sha Liu, Yong Wang +3
The rarefied flow and multi-scale flow are crucial for the aerodynamic design of spacecraft, ultra-low orbital vehicles and plumes. By introducing a discrete velocity space, the di…
Investigation of nonlinear squeeze-film damping involving rarefied gas effect in micro-electro-mechanical-systems
Yong Wang, Sha Liu, Congshan Zhuo +1
In this paper, the nonlinear squeeze-film damping (SFD) involving rarefied gas effect in the micro-electro-mechanical-systems (MEMS) is investigated. Considering the motion of stru…
A direct relaxation process for particle methods in gas kinetic theory
Sirui Yang, Sha Liu, Chengwen Zhong +2
The multi-scale flow mechanism is crucial for force and heat loaded on near-space and reentry vehicles, the control of spacecraft by thrusters, the propelling and cooling of MEMS,…
An implicit kinetic inviscid flux for predicting continuum flows in all speed regimes
Junzhe Cao, Sha Liu, Chengwen Zhong
In this study, the kinetic inviscid flux (KIF) is improved and an implicit strategy is coupled. The recently proposed KIF is a kind of inviscid flux, whose microscopic mechanism ma…
Performance evaluation of high-order reconstruction for discrete unified gas-kinetics scheme in tracking fluid interfaces
Zeren Yand, Chengwen Zhong, Congshan Zhuo
With a noticeable increase in research centered on modeling micro fluid interfaces in the framework of mesoscopic methods, we conduct an exhaustive study of discrete unified gas-ki…
A simplified discrete unified gas kinetic scheme for incompressible flow
Mingliang Zhong, Sen Zou, Dongxin Pan +2
The discrete unified gas kinetic scheme (DUGKS) is a new finite volume (FV) scheme for continuum and rarefied flows which combines the benefits of both Lattice Boltzmann Method (LB…
A simplified finite volume lattice Boltzmann method for simulations of fluid flows from laminar to turbulent regime, Part II: Extension towards turbulent flow simulation
Yong Wang, Chengwen Zhong, Jun Cao +1
In this paper, the finite volume lattice Boltzmann method (FVLBM) on unstructured grid presented in Part I of this paper is extended to simulate the turbulent flows. To model the t…
A simplified finite volume lattice Boltzmann method for simulations of fluid flows from laminar to turbulent regime, Part I: Numerical framework and its application to laminar flow simulation
Yong Wang, Chengwen Zhong, Jun Cao +1
In this paper, a finite volume lattice Boltzmann method (FVLBM) based on cell-center unstructured girds is presented and full studied to simulate the incompressible laminar flows,…
A phase-field model for large-density-ratio two-phase flows based on discrete unified gas-kinetic scheme
Zeren Yang, Chengwen Zhong, Congshan Zhuo
In this paper, a phase-field based model under the framework of discrete unified gas-kinetic scheme (DUGKS) for incompressible multiphase fluid flows is proposed. Two kinetic model…
A third order gas-kinetic scheme for unstructured grid
Ji Li, Chengwen Zhong, Congshan Zhuo
In our study, a compact third order gas-kinetic scheme is constructed for unstructured grid which is combined the compact least-square reconstruction (CLS) method. The CLS method c…
A unified gas kinetic scheme for transport and collision effects in plasma
Dongxin Pana, Chengwen Zhong, Congshan Zhuo +1
In this study, the Vlasov-Poisson equation with or without collision term for plasma is solved by the unified gas kinetic scheme (UGKS). The Vlasov equation is a differential equat…
A two stage fourth-order gas-kinetic scheme on unstructured hybrid mesh
Dongxin Pan, Chengwen Zhong, Congshan Zhuo
This paper presents an accurate and robust fourth order gas-kinetic scheme on two dimensional unstructured hybrid mesh for incompressible and compressible viscous flows. For genera…