301 citations · 883 across the 39 of their papers we have counts for
15 papers · 1 filter
Central-moment discrete unified gas-kinetic scheme for incompressible two-phase flows with large density ratio
Chunhua Zhang, Lian-Ping Wang, Hong Liang +1
In this paper, we proposed a central moment discrete unified gas-kinetic scheme (DUGKS) for multiphase flows with large density ratio and high Reynolds number. Two sets of kinetic…
On the formulations of interfacial force in the phase-field-based lattice Boltzmann method
Chunhua Zhang, Hong Liang, Zhaoli Guo
Different formulations of interfacial force have been adopted in phase-field-based lattice Boltzmann method for two-phase flows. Although they are identical mathematically, their n…
Well-balanced lattice Boltzmann equation for two-phase flows
Zhaoli Guo
The standard lattice Boltzmann equation (LBE) method usually fails to capture the physical equilibrium state of a two-phase fluid system, i.e., zero velocity and constant chemical…
Non-ideal gas dynamics under confinement: rarefaction effect, dense effect and molecular interaction
Baochao Shan, Peng Wang, Songze Chen +1
The effects of volume exclusion and long-range intermolecular attraction are investigated by the simplified kinetic model for surface-confined inhomogeneous fluids. Gas dynamics of…
Spontaneous shrinkage of droplet on wetting surface in phase-field model
Chunhua Zhang, Zhaoli Guo
Phase field theory is widely used to model multi-phase flows. A drop can shrink or grow spontaneously due to the redistribution of interface and bulk energies to minimize the syste…
A well-balanced gas kinetic scheme for Navier-Stokes equations with gravitational potential
Songze Chen, Zhaoli Guo, Kun Xu
The hydrostatic equilibrium state is the consequence of the exact hydrostatic balance between hydrostatic pressure and external force. Standard finite volume or finite difference s…
A fractional step lattice Boltzmann model for two phase flows with large density differences
Chunhua Zhang, Zhaoli Guo, Yibao Li
In this paper, a fractional step lattice Boltzmann method is proposed to model two-phase flows with large density differences by solving Cahn-Hilliard phase-field equation and the…
A combined immersed boundary and discrete unified gas kinetic scheme for particle-fluid flows
Shi Tao, Haolong Zhang, Zhaoli Guo +1
A discrete unified gas kinetic scheme (DUGKS) coupled with the immersed boundary (IB) method is developed to perform interface-resolved simulation of particle-laden flows. The pres…
A comparative study of discrete velocity methods for rarefied gas flows
Peng Wang, Minh-Tuan Ho, Lei Wu +2
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 de…
A simplification of the unified gas kinetic scheme
Songze Chen, Zhaoli Guo, Kun Xu
Unified gas kinetic scheme (UGKS) is an asymptotic preserving scheme for the kinetic equations. It is superior for transition flow simulations, and has been validated in the past y…
Performance evaluation of the general characteristics based off-lattice Boltzmann and DUGKS methods for low speed continuum flows: A comparative study
Lianhua Zhu, Peng Wang, Zhaoli Guo
The general characteristics based off-lattice Boltzmann scheme (BKG) proposed by Bardow et~al.(2006), and the discrete unified gas kinetic scheme (DUGKS) are two methods that succe…
A lattice Boltzmann method for binary fluids based on mass-conserved quasi-incompressible phase-field theory
Kang Yang, Zhaoli Guo
In this paper, a lattice Boltzmann equation (LBE) model is proposed for binary fluids based on a quasi-incompressible phase-field model [J. Shen et al, Comm. Comp. Phys. 13, 1045 (…
Discrete unified gas kinetic scheme on unstructured meshes
Lianhua Zhu, Zhaoli Guo, Kun Xu
The recently proposed discrete unified gas kinetic scheme (DUGKS) is a finite volume method for deterministic solution of the Boltzmann model equation with asymptotic preserving pr…
Discrete unified gas kinetic scheme for all Knudsen number flows: II. Compressible case
Zhaoli Guo, Ruijie Wang, Kun Xu
This paper is a continuation of our earlier work [Z.L. Guo {\it et al.}, Phys. Rev. E {\bf 88}, 033305 (2013)] where a multiscale numerical scheme based on kinetic model was develo…
Generalized Gas Dynamic Equations for Microflows
Kun Xu, Zhaoli Guo
n an early approach, we proposed a kinetic model with multiple translational temperature [K. Xu, H. Liu and J. Jiang, Phys. Fluids {\bf 19}, 016101 (2007)], to simulate non-equilib…