Statistics of one-dimensional compressible turbulence with random   large-scale force

doi:10.1063/1.4816294

CORC > 北京大学 > 工学院

	Statistics of one-dimensional compressible turbulence with random large-scale force
	Ni, Qionglin ; Shi, Yipeng ; Chen, Shiyi
刊名	physics of fluids
	2013
关键词	BURGERS TURBULENCE ISOTROPIC TURBULENCE EQUATION
DOI	10.1063/1.4816294
英文摘要	A numerical study was performed to explore the difference between the one-dimensional compressible hydrodynamic turbulence and Burgers turbulence. The compressible flows were simulated at three different turbulent Mach numbers (M-t): 0.1, 1.0, and 3.2, using a randomly large-scale forcing scheme. We observed that the isentropic condition was approximately valid in the M-t = 1.0 case, and its statistical scalings were close to that in the Burgers turbulence. We then used the subensemble method to decompose the velocity field of the M-t = 1.0 flow into two subensembles, according to the local energy fluxes in the positive and negative directions, respectively, and found that the subensemble probabilities were scale invariant in the inertial range. Further investigation on the interconversion between the two subensembles revealed that the transition in the compressible turbulence, unlike its Markovian counterpart in the Burgers turbulence, was not in accordance with a Markov process, and a mechanism for explaining this finding was then proposed. (C) 2013 AIP Publishing LLC.; Mechanics; Physics, Fluids & Plasmas; SCI(E); EI; 0; ARTICLE; 7; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/222512]
专题	工学院
推荐引用方式 GB/T 7714	Ni, Qionglin,Shi, Yipeng,Chen, Shiyi. Statistics of one-dimensional compressible turbulence with random large-scale force[J]. physics of fluids,2013.
APA	Ni, Qionglin,Shi, Yipeng,&Chen, Shiyi.(2013).Statistics of one-dimensional compressible turbulence with random large-scale force.physics of fluids.
MLA	Ni, Qionglin,et al."Statistics of one-dimensional compressible turbulence with random large-scale force".physics of fluids (2013).