Discrete Boltzmann multi-scale modelling of non-equilibrium multiphase flows

Y Gan, A Xu, H Lai, W Li, G Sun… - Journal of Fluid Mechanics, 2022 - cambridge.org
The aim of this paper is twofold: the first aim is to formulate and validate a multi-scale
discrete Boltzmann method (DBM) based on density functional kinetic theory for thermal …

Discrete Boltzmann modeling of high-speed compressible flows with various depths of non-equilibrium

D Zhang, A Xu, Y Zhang, Y Gan, Y Li - Physics of Fluids, 2022 - pubs.aip.org
The non-equilibrium high-speed compressible flows present wealthy applications in
engineering and science. With the deepening of Thermodynamic Non-Equilibrium (TNE) …

Specific-heat ratio effects on the interaction between shock wave and heavy-cylindrical bubble: Based on discrete Boltzmann method

D Zhang, A Xu, J Song, Y Gan, Y Zhang, Y Li - Computers & Fluids, 2023 - Elsevier
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 …

Discrete Boltzmann modeling of Rayleigh-Taylor instability: Effects of interfacial tension, viscosity, and heat conductivity

J Chen, A Xu, D Chen, Y Zhang, Z Chen - Physical Review E, 2022 - APS
Abstract The two-dimensional Rayleigh-Taylor instability (RTI) in compressible flow with
intermolecular interactions is probed via the discrete Boltzmann method. The effects of …

The effect of odd-viscosity on Rayleigh–Taylor instability of a liquid film under a heated inclined substrate

B Jia, Y Jian - Physics of Fluids, 2022 - pubs.aip.org
We discuss the effect of odd viscosity on Rayleigh–Taylor instability of a thin Newtonian
liquid film with broken time-reversal symmetry as it flows down a uniformly heated, inclined …

Viscous effects on morphological and thermodynamic non-equilibrium characterizations of shock–bubble interaction

D Zhang, A Xu, Y Gan, Y Zhang, J Song, Y Li - Physics of Fluids, 2023 - pubs.aip.org
ABSTRACT 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 …

Impact of complex flow structures on the turbine blade tip region mixing

L Huang, Z Zou, C Fu, Y Liu, F Shao - Physics of Fluids, 2023 - pubs.aip.org
Mixing of the turbine blade tip leakage and mainstream flows causes considerable
aerodynamic loss. Its understanding is crucial to raise a consequential improvement of the …

Thermally stratified free shear layers: Combined Kelvin–Helmholtz Rayleigh–Taylor instability

A Sengupta, B Joshi, AK Verma - Physics of Fluids, 2022 - pubs.aip.org
ABSTRACT A numerical investigation of Rayleigh–Taylor instability (RTI) with different
unstable thermal stratifications, and coupled Kelvin–Helmholtz (KH) and RTI (referred to as …

Lagrangian investigation of the interface dynamics in single-mode Rayleigh–Taylor instability

D Zhao, L Xiao, H Aluie, P Wei, C Lin - Physics of Fluids, 2023 - pubs.aip.org
We apply Lagrangian particle tracking to the two-dimensional single-mode Rayleigh–Taylor
(RT) instability to study the dynamical evolution of fluid interface. At the onset of the …

Chemical reaction of Ni/Al interface associated with perturbation growth under shock compression

Y Xie, JL Shao, R Liu, P Chen - Physics of Fluids, 2022 - pubs.aip.org
The exothermic reaction of Ni/Al laminates always starts from the interface, and the role of
interfacial instability in the shock-induced chemical reaction has not been clarified. This work …