Particle-based Simulation of Rayleigh-Taylor Instability

International Conference on Advances in Nuclear Science and Engineering 2015

Aprianti, Nur Asiah^1 ; Viridi, Sparisoma^1 ; Su'ud, Zaki^1 ; Morita, Koji^2

Nuclear Physics and Bio Physics Research Group, Bandung Institute of Technology, Gedung Fisika, Jl. Ganesha 10, Bandung

40132, Indonesia^1

Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Moto-oka 774, Fukuoka, Japan^2

关键词: Buoyancy modeling;    Mass density ratio;    Parametric simulations;    Particle methods;    Particle-based simulation;    Rayleigh-Taylor instabilities;    Rayleigh-Taylor instability phenomena;    Viscosity ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/799/1/012012/pdf
DOI  :  10.1088/1742-6596/799/1/012012

来源: IOP

【 摘 要 】

Rayleigh-Taylor instability is a typical benchmark in a computational fluid dynamics, which show interpenetrate materials happened when a heavy liquid is above a lighter liquid. In particle method, Shirakawa et. al. had been proposed a correction term on modelling a buoyancy force to show the phenomena of Rayleigh-Taylor instability (RTI) in the simulation. By adjust a specific value of correction term for a specific mass density ratio, Rayleigh-Taylor instability phenomena had been observed on MPS method. Later, the phenomena is also observed on FVP methods using the same modelling. In this study, several mass density ratio and viscosity ratio of liquids have been proposed as parametric simulation to observe Rayleigh-Taylor instability. The results show the correlations between mass density ratio and viscosity ratio in the specific correction term value of buoyancy model. This results confirmed that the RTI phenomena can be observed in specific mass density ratio.