301 citations · 883 across the 39 of their papers we have counts for
39 papers
Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer
Xinliang Song, Yue Zhang, Xiafeng Zhou +2
In this work, a steady discrete unified gas kinetic scheme (SDUGKS) is proposed to solve the steady radiative transfer equation (RTE), which is an improvement of the original SDUGK…
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…
Discrete unified gas kinetic scheme for the conservative Allen-Cahn equation
Chunhua Zhang, Hong Liang, Zhaoli Guo +1
In this paper, the discrete unified gas kinetic scheme (DUGKS) with an improved microflux across the cell interface for the conservative Allen-Cahn equation (CACE) is proposed. In…
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…
Heat vortexes of ballistic, diffusive and hydrodynamic phonon transport in two-dimensional materials
Chuang Zhang, Songze Chen, Zhaoli Guo
In this work, the heat vortexes in two-dimensional porous or ribbon structures are investigated based on the phonon Boltzmann transport equation (BTE) under the Callaway model. Fir…
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…
Non-equilibrium transport of inhomogeneous shale gas under ultra-tight confinement
Baochao Shan, Runxi Wang, Peng Wang +3
The non-equilibrium transport of inhomogeneous and dense gases highly confined by surface is encountered in many engineering applications. For example, in the shale gas production…
Perturbation theory of thermal rectification
Chuang Zhang, Meng An, Zhaoli Guo +1
Thermal rectification which is a diode-like behavior of heat flux has been studied over a long time. However, a universal and systematic physical description is still lacking. In t…
Radial thermal rectification in the concentric silicon ring from ballistic to diffusive regime
Chuang Zhang, Songze Chen, Zhaoli Guo
The radial thermal rectification in the concentric silicon ring from ballistic to diffusive regime is investigated based on the phonon Boltzmann transport equation. In the ballisti…
On unified preserving properties of kinetic schemes
Zhaoli Guo, Jiequan Li, Kun Xu
The kinetic theory provides a physical basis for developing multiscal methods for gas flows covering a wide range of flow regimes. A particular challenge for kinetic schemes is whe…
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…
Violation of Fourier's law in homogeneous systems
Chuang Zhang, Dengke Ma, Manyu Shang +5
Hotspot is a ubiquitous phenomenon in microdevices/chips. In homogeneous nanoscale graphene disk with a hotspot, a graded thermal conductivity is observed previously even when the…
Local reactive boundary scheme for lattice Boltzmann method
Long Jv, Chunhua Zhang, Zhaoli Guo
In this paper, a boundary scheme is proposed for the two-dimensional five-velocity (D2Q5) lattice Boltzmann method with heterogeneous surface reaction, in which the unknown distrib…
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 fast synthetic iterative scheme for the stationary phonon Boltzmann transport equation
Chuang Zhang, Songze Chen, Zhaoli Guo +1
In this paper, a fast synthetic iterative scheme is developed to accelerate convergence for the implicit DOM based on the stationary phonon BTE. The key innovative point of the pre…
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…
Discrete unified gas kinetic scheme for multiscale heat transfer with arbitrary temperature difference
Chuang Zhang, Zhaoli Guo
In this paper, a finite-volume discrete unified gas kinetic scheme (DUGKS) based on the non-gray phonon transport model is developed for multiscale heat transfer problem with arbit…
GPU acceleration of an iterative scheme for gas-kinetic model equations with memory reduction techniques
Lianhua Zhu, Peng Wang, Songze Chen +2
This paper presents a Graphics Processing Units (GPUs) acceleration method of an iterative scheme for gas-kinetic model equations. Unlike the previous GPU parallelization of explic…
A high-order lattice Boltzmann model for the Cahn-Hilliard equation
Chunhua Zhang, Zhaoli Guo, Hong Liang
In this paper, a lattice Boltzmann model with the single-relaxation-time model for the Cahn-Hilliard equation (CHE) is proposed. The discrete source term is redesigned through a th…
An implicit kinetic scheme for multiscale heat transfer problem accounting for phonon dispersion and polarization
Chuang Zhang, Songze Chen, Zhaoli Guo
An efficient implicit kinetic scheme is developed to solve the stationary phonon Boltzmann transport equation (BTE) based on the non-gray model including the phonon dispersion and…
A discrete unified gas-kinetic scheme for immiscible two-phase flows
Chunhua Zhang, Kang Yang, Zhaoli Guo
In this work, we extend the discrete unified gas-kinetic scheme (DUGKS) [Guo et al., Phys. Rev. E 88, 033305 (2013)] to continue two-phase flows. In the framework of DUGKS, two kin…
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 multi-level parallel solver for rarefied gas flows in porous media
Minh Tuan Ho, Lianhua Zhu, Lei Wu +4
A high-performance gas kinetic solver using multi-level parallelization is developed to enable pore-scale simulations of rarefied flows in porous media. The Boltzmann model equatio…