Evolution of mixing width induced by general Rayleigh-Taylor instability

doi:10.1103/PhysRevE.93.063102

	Evolution of mixing width induced by general Rayleigh-Taylor instability
	Zhang YS; He ZW; Gao FJ; Li XL(李新亮); Tian BL; Tian, BL (reprint author), Inst Appl Phys & Computat Math, Key Lab Computat Phys, Beijing 100094, Peoples R China.
发表期刊	PHYSICAL REVIEW E
	2016
卷号	93 期号:6 页码:63102
ISSN	2470-0045
摘要	Turbulent mixing induced by Rayleigh-Taylor (RT) instability occurs ubiquitously in many natural phenomena and engineering applications. As the simplest and primary descriptor of the mixing process, the evolution of mixing width of the mixing zone plays a notable role in the flows. The flows generally involve complex varying acceleration histories and widely varying density ratios, two dominant factors affecting the evolution of mixing width. However, no satisfactory theory for predicting the evolution has yet been established. Here a theory determining the evolution of mixing width in general RT flows is established to reproduce, first, all of the documented experiments conducted for diverse (i.e., constant, impulsive, oscillating, decreasing, increasing, and complex) acceleration histories and all density ratios. The theory is established in terms of the conservation principle, with special consideration given to the asymmetry of the volume-averaged density fields occurring in actual flows. The results reveal the sensitivity or insensitivity of the evolution of a mixing front of a neighboring light or heavy fluid to the degree of asymmetry and thus explain the distinct evolutions in two experiments with the same configurations.
关键词	Robotic Fish Capability Optimization The Taguchi Method
DOI	10.1103/PhysRevE.93.063102
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000377334300010
关键词[WOS]	Robotic Fish ; Capability Optimization ; The Taguchi Method
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas ; Physics, Mathematical
项目资助者	We acknowledge financial support from the Chinese Academy of Engineering Physics (CAEP) under Grant No. YZ2015015 and LCP9140C690104150C69303 and from the National Nature Science Foundation of China (NSFC) under Grants Nos. 11502029, 11572052, 11472059, 11171037, 11372330, 11472278, and 91441103.
课题组名称	LHD可压缩湍流
论文分区	一类
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/59566
专题	高温气体动力学国家重点实验室
通讯作者	Tian, BL (reprint author), Inst Appl Phys & Computat Math, Key Lab Computat Phys, Beijing 100094, Peoples R China.
推荐引用方式 GB/T 7714	Zhang YS,He ZW,Gao FJ,et al. Evolution of mixing width induced by general Rayleigh-Taylor instability[J]. PHYSICAL REVIEW E,2016,93,6,:63102.
APA	Zhang YS,He ZW,Gao FJ,李新亮,Tian BL,&Tian, BL .(2016).Evolution of mixing width induced by general Rayleigh-Taylor instability.PHYSICAL REVIEW E,93(6),63102.
MLA	Zhang YS,et al."Evolution of mixing width induced by general Rayleigh-Taylor instability".PHYSICAL REVIEW E 93.6(2016):63102.

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