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DOI	10.5194/acp-19-2489-2019
	Dissipation rate of turbulent kinetic energy in stably stratified sheared flows
	Zilitinkevich S.; Druzhinin O.; Glazunov A.; Kadantsev E.; Mortikov E.; Repina I.; Troitskaya Y.
发表日期	2019
ISSN	16807316
起始页码	2489
结束页码	2496
卷号	19 期号:4
英文摘要	Over the years, the problem of dissipation rate of turbulent kinetic energy (TKE) in stable stratification remained unclear because of the practical impossibility to directly measure the process of dissipation that takes place at the smallest scales of turbulent motion. Poor representation of dissipation causes intolerable uncertainties in turbulence-closure theory and thus in modelling stably stratified turbulent flows. We obtain a theoretical solution to this problem for the whole range of stratifications from neutral to limiting stable; and validate it via (i) direct numerical simulation (DNS) immediately detecting the dissipation rate and (ii) indirect estimates of dissipation rate retrieved via the TKE budget equation from atmospheric measurements of other components of the TKE budget. The proposed formulation of dissipation rate will be of use in any turbulence-closure models employing the TKE budget equation and in problems requiring precise knowledge of the high-frequency part of turbulence spectra in atmospheric chemistry, aerosol science, and microphysics of clouds. © Author(s) 2019.
语种	英语
scopus关键词	computational fluid dynamics; energy dissipation; kinetic energy; shear flow; stratification; turbulence
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144614
作者单位	Finnish Meteorological Institute, Helsinki, 00101, Finland; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki00014, Finland; Lobachevsky State University of Nizhni Novgorod, Faculty of Radiophysics, Nizhni Novgorod, 603950, Russian Federation; Lomonosov Moscow State University, Research Computing Center, Faculty of Geography, Moscow, 117192, Russian Federation; Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russian Federation; Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, 119991, Russian Federation; Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, 119017, Russian Federation; University of Tyumen, Tyumen, 625003, Russian Federation
推荐引用方式 GB/T 7714	Zilitinkevich S.,Druzhinin O.,Glazunov A.,et al. Dissipation rate of turbulent kinetic energy in stably stratified sheared flows[J],2019,19(4).
APA	Zilitinkevich S..,Druzhinin O..,Glazunov A..,Kadantsev E..,Mortikov E..,...&Troitskaya Y..(2019).Dissipation rate of turbulent kinetic energy in stably stratified sheared flows.Atmospheric Chemistry and Physics,19(4).
MLA	Zilitinkevich S.,et al."Dissipation rate of turbulent kinetic energy in stably stratified sheared flows".Atmospheric Chemistry and Physics 19.4(2019).