Nonequilibrium thermohydrodynamic effects on the Rayleigh-Taylor   instability in compressible flows

doi:10.1103/PhysRevE.94.023106

CORC > 北京大学 > 工学院

	Nonequilibrium thermohydrodynamic effects on the Rayleigh-Taylor instability in compressible flows
	Lai, Huilin ; Xu, Aiguo ; Zhang, Guangcai ; Gan, Yanbiao ; Ying, Yangjun ; Succi, Sauro
刊名	PHYSICAL REVIEW E
	2016
关键词	LATTICE BOLTZMANN SIMULATION IMMISCIBLE FLUIDS MULTIPHASE FLOW HEAT-TRANSFER GROWTH-RATES MODEL COMBUSTION TURBULENCE NUMBER
DOI	10.1103/PhysRevE.94.023106
英文摘要	The effects of compressibility on Rayleigh-Taylor instability (RTI) are investigated by inspecting the interplay between thermodynamic and hydrodynamic nonequilibrium phenomena (TNE, HNE, respectively) via a discrete Boltzmann model. Two effective approaches are presented, one tracking the evolution of the local TNE effects and the other focusing on the evolution of the mean temperature of the fluid, to track the complex interfaces separating the bubble and the spike regions of the flow. It is found that both the compressibility effects and the global TNE intensity show opposite trends in the initial and the later stages of the RTI. Compressibility delays the initial stage of RTI and accelerates the later stage. Meanwhile, the TNE characteristics are generally enhanced by the compressibility, especially in the later stage. The global or mean thermodynamic nonequilibrium indicators provide physical criteria to discriminate between the two stages of the RTI.; Foundation of the LCP; National Natural Science Foundation of China [11475028, 11301082, 11202003]; China Postdoctoral Science Foundation [2014M550660]; Natural Science Foundation of Fujian Provinces [2014J05003, JA13069, JB13020]; Natural Science Foundation of Hebei Provinces [A2013409003, A201500111]; SCI(E); EI; ARTICLE; Xu_Aiguo@iapcm.ac.cn; Zhang_Guangcai@iapcm.ac.cn; 2; 94
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491600]
专题	工学院
推荐引用方式 GB/T 7714	Lai, Huilin,Xu, Aiguo,Zhang, Guangcai,et al. Nonequilibrium thermohydrodynamic effects on the Rayleigh-Taylor instability in compressible flows[J]. PHYSICAL REVIEW E,2016.
APA	Lai, Huilin,Xu, Aiguo,Zhang, Guangcai,Gan, Yanbiao,Ying, Yangjun,&Succi, Sauro.(2016).Nonequilibrium thermohydrodynamic effects on the Rayleigh-Taylor instability in compressible flows.PHYSICAL REVIEW E.
MLA	Lai, Huilin,et al."Nonequilibrium thermohydrodynamic effects on the Rayleigh-Taylor instability in compressible flows".PHYSICAL REVIEW E (2016).