97 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Northwestern Polytechnical UniversityCN23 papers
- Hong Kong University of Science and TechnologyHK7 papers
- HKUST Shenzhen Research InstituteCN4 papers
- Beijing Computational Science Research CenterCN1 paper
- China Aerodynamics Research and Development CenterCN1 paper
- Delft University of TechnologyNL1 paper
- Institute of Applied Physics and Computational MathematicsCN1 paper
- Zhejiang UniversityCN1 paper
23 papers
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…
Analysis on numerical stability and convergence of RANS turbulence models from the perspective of coupling modes
Yilang Liu, Weiwei Zhang, Zhenhua Xia
Reynolds-averaged Navier-Stokes simulations are still the main method to study complex flows in engineering. However, traditional turbulence models cannot accurately predict flow f…
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,…
A three-dimensional unified gas-kinetic wave-particle solver for flow computation in all regimes
Yipei Chen, Yajun Zhu, Kun Xu
In this paper, the unified gas-kinetic wave-particle (UGKWP) method has been constructed on three-dimensional unstructured mesh with parallel computing for multiscale flow simulati…
A high order kinetic flow solver based on flux reconstruction framework
Ji Li, Chengwen Zhong, Sha Liu
The goal of this paper is to develop a high order numerical method based on Kinetic Inviscid Flux (KIF) method and Flux Reconstruction (FR) framework. The KIF aims to find a balanc…
Customized data-driven RANS closures for bi-fidelity LES-RANS optimization
Yu Zhang, Richard P. Dwight, Martin Schmelzer +3
Multi-fidelity optimization methods promise a high-fidelity optimum at a cost only slightly greater than a low-fidelity optimization. This promise is seldom achieved in practice, d…
Simplified Unified Wave-Particle Method with Quantified Model-Competition Mechanism for Numerical Calculation of Multi-Scale Flows
Sha Liu, Chengwen Zhong, Ming Fang
A Quantified Model-Competition (QMC) mechanism for multi-scale flows is extracted from the integral (analytical) solution of the Boltzmann-BGK model equation. In the QMC mechanism,…
Ray Effect in Rarefied Flow Simulation
Yajun Zhu, Chengwen Zhong, Kun Xu
Ray effect usually appears in the radiative transfer when using discrete ordinates method (DOM) in the simulations. The cause and remedy for the ray effect have been intensively in…
Conserved discrete unified gas-kinetic scheme with unstructured discrete velocity space
Jianfeng Chen, Sha Liu, Yong Wang +1
Discrete unified gas-kinetic scheme (DUGKS) is a multi-scale numerical method for flows from continuum limit to free molecular limit, and is especially suitable for the simulation…
An ALE-type discrete unified gas kinetic scheme for low-speed continuum and rarefied flow simulations with moving boundaries
Yong Wan, Chengwen Zhong
In this paper, the original discrete unified gas kinetic scheme (DUGKS) is extended to arbitrary Lagrangian-Eulerian (ALE) framework for simulating the low-speed continuum and rare…
A multi-prediction implicit scheme for steady state solutions of gas flow in all flow regimes
Ruifeng Yuan, Chengwen Zhong
An implicit multiscale method with multiple macroscopic prediction for steady state solutions of gas flow in all flow regimes is presented. The method is based on the finite volume…
A conservative discrete velocity method for the ellipsoidal Fokker-Planck equation in gas-kinetic theory
Sha Liu, Ruifeng Yuan, Usman Javid +1
A conservative discrete velocity method (DVM) is developed for the ellipsoidal Fokker-Planck (ES-FP) equation in prediction of non-equilibrium neutral gas flows in this paper. The…
Unified Gas-kinetic Wave-Particle Methods III: Multiscale Photon Transport
Weiming Li, Chang Liu, Yajun Zhu +2
In this paper, we extend the unified gas-kinetic wave-particle (UGKWP) method to the multiscale photon transport. In this method, the photon free streaming and scattering processes…
Unified Gas-kinetic Wave-Particle Methods II: Multiscale Simulation on Unstructured Mesh
Yajun Zhu, Chang Liu, Chengwen Zhong +1
In this paper, we present a unified gas-kinetic wave-particle (UGKWP) method on unstructured mesh for multiscale simulation of continuum and rarefied flow. Inheriting from the mult…
Unified Gas-kinetic Wave-Particle methods I: Continuum and Rarefied Gas Flow
Chang Liu, Yajun Zhu, Kun Xu
The unified gas-kinetic scheme (UGKS) provides a framework for simulating multiscale transport with the updates of both gas distribution function and macroscopic flow variables on…
A conservative implicit scheme for steady state solutions of diatomic gas flow in all flow regimes
Ruifeng Yuan, Chengwen Zhong
An implicit scheme for steady state solutions of diatomic gas flow is presented. The method solves the Rykov model equation in the finite volume discrete velocity method (DVM) fram…
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…
An Implicit Unified Gas-kinetic Scheme for Unsteady Flow in All Knudsen Regimes
Yajun Zhu, Chengwen Zhong, Kun Xu
The unified gas-kinetic scheme (UGKS) is a direct modeling method for multiple scale transports. The modeling scale of the scheme is the mesh size and time step, and the ratios of…
An Implicit Discrete Unified Gas-Kinetic Scheme for Simulations of Steady Flow in All Flow Regimes
Dongxin Pan, Chengwen Zhong, Congshan Zhuo
This paper presents an implicit method for the discrete unified gas-kinetic scheme (DUGKS) to speed up the simulations of the steady flows in all flow regimes. The DUGKS is a multi…
Unified Gas-kinetic Scheme with Multigrid Convergence for Rarefied Flow Study
Yajun Zhu, Chengwen Zhong, Kun Xu
The unified gas kinetic scheme (UGKS) is a direct modeling method based on the gas dynamical model on the mesh size and time step scales. With the implementation of particle transp…
Implementation of dual time stepping and GMRES of implicit gas-kinetic scheme for unsteady flow simulations
Ji Li, Chengwen Zhong, Yong Wang +1
A dual time-stepping strategy of gas-kinetic scheme for the simulation of unsteady flows is introduced in this work. The dual time-stepping strategy is always used in the approache…