103 citations · 435 across the 24 of their papers we have counts for
24 papers
Kinetics of Rayleigh-Taylor instability in van der Waals fluid: the influence of compressibility
Jie Chen, Aiguo Xu, Yudong Zhang +2
Early studies on Rayleigh-Taylor instability (RTI) primarily relied on the Navier-Stokes (NS) model. As research progresses, it becomes increasingly evident that the kinetic inform…
Viscous effects on morphological and thermodynamic non-equilibrium characterizations of shock-bubble interaction
Dejia Zhang, Aiguo Xu, Yanbiao Gan +3
A two-fluid discrete Boltzmann model with a flexible Prandtl number is formulated to study the shock-bubble interaction (SBI). This paper mainly focuses on the viscous effects on m…
Specific-heat ratio effects on the interaction between shock wave and heavy-cylindrical bubble: based on discrete Boltzmann method
Dejia Zhang, Aiguo Xu, Jiahui Song +3
Specific-heat ratio effects on the interaction between a planar shock wave and a two-dimensional heavy-cylindrical bubble are studied by the discrete Boltzmann method. Snapshots of…
Discrete Boltzmann modeling of detonation: based on the Shakhov model
Yiming Shan, Aiguo Xu, Yudong Zhang +2
A Discrete Boltzmann Model(DBM) based on the Shakhov model for detonation is proposed. Compared with the DBM based on the Bhatnagar-Gross-Krook (BGK) model, the current model has a…
Nonequilibrium kinetics effects in Richtmyer-Meshkov instability and reshock processes
Yiming Shan, Aiguo Xu, Lifeng Wang +1
Nonequilibrium kinetic effects are widespread in fluid systems and might have a significant impact on the inertial confinement fusion ignition process, and the entropy production r…
Thermodynamic non-equilibrium effects in bubble coalescence: A discrete Boltzmann study
Guanglan Sun, Yanbiao Gan, Aiguo Xu +2
The Thermodynamic Non-Equilibrium (TNE) effects in the coalescing process of two initially static bubbles under thermal conditions are investigated by a Discrete Boltzmann Model (D…
Discrete Boltzmann modeling of high-speed compressible flows with various depths of non-equilibrium
Dejia Zhang, Aiguo Xu, Yudong Zhang +2
The non-equilibrium high-speed compressible flows present wealthy applications in engineering and science. With the deepening of Thermodynamic Non-Equilibrium (TNE), higher-order n…
Discrete Boltzmann modeling of Rayleigh-Taylor instability: effects of interfacial tension, viscosity and heat conductivity
Jie Chen, Aiguo Xu, Dawei Chen +2
The Rayleigh-Taylor Instability (RTI) in compressible flow with inter-molecular interactions is probed via the Discrete Boltzmann Method (DBM). The effects of interfacial tension,…
Effects of the initial perturbations on the Rayleigh-Taylor-Kelvin-Helmholtz instability system
Feng Chen, Aiguo Xu, Yudong Zhang +3
In the paper, the effects of initial perturbations on the Rayleigh-Taylor instability (RTI), Kelvin-Helmholtz instability (KHI), and the coupled Rayleigh-Taylor-Kelvin-Helmholtz in…
Discrete Boltzmann Modeling of Plasma Shock Wave
Zhipeng Liu, Jiahui Song, Aiguo Xu +2
Plasma shock waves widely exist and play an important role in high-energy-density environment, especially in the inertial confinement fusion. Due to the large gradient of macroscop…
Morphological and non-equilibrium analysis of coupled Rayleigh-Taylor-Kelvin-Helmholtz instability
Feng Chen, Aiguo Xu, Yudong Zhang +1
In this paper, the coupled Rayleigh-Taylor-Kelvin-Helmholtz instability(RTI, KHI and RTKHI, respectively) system is investigated using a multiple-relaxation-time discrete Boltzmann…
Kinetic modeling of multiphase flow based on simplified Enskog equation
Yudong Zhang, Aiguo Xu, Jingjiang Qiu +2
A new kinetic model for multiphase flow was presented under the framework of the discrete Boltzmann method (DBM). Significantly different from the previous DBM, a bottom-up approac…
Two-fluid discrete Boltzmann model for compressible flows: based on Ellipsoidal Statistical Bhatnagar-Gross-Krook
D. J. Zhang, A. G. Xu, Y. D. Zhang +1
A two-fluid Discrete Boltzmann Model(DBM) for compressible flows based on Ellipsoidal Statistical Bhatnagar-Gross-Krook(ES-BGK) is presented. The model has flexible Prandtl number…
A One-Dimensional Discrete Boltzmann Model for Detonation and an Abnormal Detonation Phenomenon
Yudong Zhang, Aiguo Xu, Guangcai Zhang +1
A one-dimensional discrete Boltzmann model for detonation simulation is presented. Instead of numerical solving Navier-Stokes equations, this model obtains the information of flow…
Comparative Study on Several Criteria for Non-equilibrium Phase Separation
Yudong Zhang, Aiguo Xu, Guangcai Zhang +1
Several different kinds of criteria for non-equilibrium phase separation to discriminate the two stages, the spinnodal decompostion (SD) and domain growth (DG), are compared and fu…
Entropy production in thermal phase separation: a kinetic-theory approach
Yudong Zhang, Aiguo Xu, Guangcai Zhang +3
Entropy production during the process of thermal phase-separation of multiphase flows is investigated by means of a discrete Boltzmann kinetic model. The entropy production rate is…
Comparative study of discrete Boltzmann model and Navier-Stokes
Yudong Zhang, Aiguo Xu, Guangcai Zhang
Discrete Boltzmann model (DBM) is a type of coarse-grained mesoscale kinetic model derived from the Boltzmann equation. Physically, it is roughly equivalent to a hydrodynamic model…
Discrete Boltzmann method for non-equilibrium flows: based on Shakhov model
Yudong Zhang, Aiguo Xu, Guangcai Zhang +2
A general framework for constructing discrete Boltzmann model for non-equilibrium flows based on the Shakhov model is presented. The Hermite polynomial expansion and a set of discr…
Discrete Boltzmann model for implosion and explosion related compressible flow with spherical symmetry
Aiguo Xu, Guangcai Zhang, Yudong Zhang +2
To kinetically model implosion and explosion related phenomena, we present a theoretical framework for constructing Discrete Boltzmann Model(DBM) with spherical symmetry in spheric…
Discrete Boltzmann trans-scale modeling of high-speed compressible flows
Yanbiao Gan, Aiguo Xu, Guangcai Zhang +2
We present a general framework for constructing trans-scale \emph{discrete Boltzmann models} (DBMs) for high-speed compressible flows ranging from continuum to transition regime. T…
Discrete ellipsoidal statistical BGK model and Burnett equations
Yudong Zhang, Aiguo Xu, Guangcai Zhang +2
To simulate non-equilibrium compressible flows, a new discrete Boltzmann model, discrete Ellipsoidal Statistical(ES)-BGK model, is proposed. Compared with the original discrete BGK…
Discrete Boltzmann Modeling of Compressible Flows
Aiguo Xu, Guangcai Zhang, Yudong Zhang
Mathematically, the typical difference of Discrete Boltzmann Model (DBM) from the traditional hydrodynamic one is that the Navier-Stokes (NS) equations are replaced by a discrete B…
Discrete Boltzmann method with Maxwell-type boundary condition for slip flow
Yudong Zhang, Aiguo Xu, Guangcai Zhang +1
The rarefied effect of gas flow in microchannel is significant and cannot be well described by traditional hydrodynamic models. It has been know that discrete Boltzmann model (DBM)…
Kinetic modeling of detonation and effects of negative temperature coefficient
Yudong Zhang, Aiguo Xu, Guangcai Zhang +2
The kinetic modeling and simulation of reactive flows, especially for those with detonation, are further investigated. From the theoretical side, a new set of hydrodynamic equation…