Statistics and structures of pressure and density in compressible   isotropic turbulence

doi:10.1080/14685248.2013.831989

CORC > 北京大学 > 工学院

	Statistics and structures of pressure and density in compressible isotropic turbulence
	Wang, Jianchun ; Yang, Yantao ; Shi, Yipeng ; Xiao, Zuoli ; He, X. T. ; Chen, Shiyi
刊名	journal of turbulence
	2013
关键词	compressible turbulence pressure density shock wave vortex INTERSTELLAR TURBULENCE NUMERICAL SIMULATIONS REYNOLDS-NUMBER INTERMITTENCY RESOLUTION SPECTRUM DYNAMICS SCHEMES ENERGY FLOWS
DOI	10.1080/14685248.2013.831989
英文摘要	We study statistics and structures of pressure and density in the presence of large-scale shock waves in a forced compressible isotropic turbulence using high-resolution numerical simulation. The spectra for pressure and density exhibit a -2 scaling over an operational definition of the inertial range. Both the numerical simulation and a heuristic PDF model reveal that the PDFs of pressure increment exhibit a -2 power law region for the separation in the operational definition of inertial range, quantitatively similar to the PDF of pressure gradient, which also displays a -2 power law region. Moreover, the statistical relation between density increment and pressure increment has been investigated through a shock-relation model. There is a positive correlation between the vorticity magnitude and pressure, which is different from the case of incompressible turbulence. We argue that this difference is due to large-scale shock waves, another type of intermittent structures in addition to vortex structures in incompressible turbulence.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000324914500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Mechanics; Physics, Fluids & Plasmas; SCI(E); 2; ARTICLE; 6; 21-37; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154467]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Jianchun,Yang, Yantao,Shi, Yipeng,et al. Statistics and structures of pressure and density in compressible isotropic turbulence[J]. journal of turbulence,2013.
APA	Wang, Jianchun,Yang, Yantao,Shi, Yipeng,Xiao, Zuoli,He, X. T.,&Chen, Shiyi.(2013).Statistics and structures of pressure and density in compressible isotropic turbulence.journal of turbulence.
MLA	Wang, Jianchun,et al."Statistics and structures of pressure and density in compressible isotropic turbulence".journal of turbulence (2013).