An analysis of subgrid-resolved scale interactions with use of results from direct numerical simulations

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	An analysis of subgrid-resolved scale interactions with use of results from direct numerical simulations
	Gong H; Chen S; He GW(何国威)
刊名	Acta Mechanica Sinica
	1999
卷号	15 期号:2 页码:108-115
ISSN号	0567-7718
通讯作者	Gong, H (reprint author), Univ Calif Los Alamos Natl Lab, Environm Safety & Hlth Div, POB 1663, Los Alamos, NM 87545 USA.
中文摘要	Subgrid nonlinear interaction and energy transfer are analyzed using direct numerical simulations of isotropic turbulence. Influences of cutoff wave number at different ranges of scale on the energetics and dynamics have been investigated. It is observed that subgrid-subgrid interaction dominates the turbulent dynamics when cut-off wave number locates in the energy-containing range while resolved-subgrid interaction dominates if it is in the dissipation range; By decomposing the subgrid energy transfer and nonlinear interaction into 'forward' and 'backward' groups according to the sign of triadic interaction, we find that individually each group has very large contribution, but the net of them is much smaller, implying that tremendous cancellation happens between these two groups.
学科主题	力学
类目[WOS]	Engineering, Mechanical ; Mechanics
研究领域[WOS]	Engineering ; Mechanics
关键词[WOS]	ISOTROPIC TURBULENCE ; ENERGY-TRANSFER
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000081109500002
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16566]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Gong H,Chen S,He GW. An analysis of subgrid-resolved scale interactions with use of results from direct numerical simulations[J]. Acta Mechanica Sinica,1999,15(2):108-115.
APA	Gong H,Chen S,&何国威.(1999).An analysis of subgrid-resolved scale interactions with use of results from direct numerical simulations.Acta Mechanica Sinica,15(2),108-115.
MLA	Gong H,et al."An analysis of subgrid-resolved scale interactions with use of results from direct numerical simulations".Acta Mechanica Sinica 15.2(1999):108-115.