On the dissipation rate of temperature fluctuations in stably stratified flows

Sukanta Basu; Adam W. DeMarco; Ping He

doi:10.1007/s10652-020-09761-7

On the dissipation rate of temperature fluctuations in stably stratified flows

Sukanta Basu
, Adam W. DeMarco
, Ping He

Atmospheric Sciences Rsch Center

University at Albany

United States Air Force Academy
University of Michigan, Ann Arbor

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this study, we explore several integral and outer length scales of turbulence which can be formulated by using the dissipation of temperature fluctuations (χ) and other relevant variables. Our analyses directly lead to simple yet non-trivial parameterizations for both spatially-averaged χ¯ and the structure parameter of temperature (CT2). For our purposes, we make use of high-fidelity data from direct numerical simulations of stratified channel flows.

Original language	English
Pages (from-to)	63-82
Number of pages	20
Journal	Environmental Fluid Mechanics
Volume	21
Issue number	1
DOIs	https://doi.org/10.1007/s10652-020-09761-7
State	Published - Feb 2021

Keywords

Integral length scale
Outer length scale
Ozmidov scale
Stable boundary layer
Structure parameter

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10.1007/s10652-020-09761-7

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abstract = "In this study, we explore several integral and outer length scales of turbulence which can be formulated by using the dissipation of temperature fluctuations (χ) and other relevant variables. Our analyses directly lead to simple yet non-trivial parameterizations for both spatially-averaged χ¯ and the structure parameter of temperature (CT2). For our purposes, we make use of high-fidelity data from direct numerical simulations of stratified channel flows.",

keywords = "Integral length scale, Outer length scale, Ozmidov scale, Stable boundary layer, Structure parameter",

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AU - DeMarco, Adam W.

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N2 - In this study, we explore several integral and outer length scales of turbulence which can be formulated by using the dissipation of temperature fluctuations (χ) and other relevant variables. Our analyses directly lead to simple yet non-trivial parameterizations for both spatially-averaged χ¯ and the structure parameter of temperature (CT2). For our purposes, we make use of high-fidelity data from direct numerical simulations of stratified channel flows.

AB - In this study, we explore several integral and outer length scales of turbulence which can be formulated by using the dissipation of temperature fluctuations (χ) and other relevant variables. Our analyses directly lead to simple yet non-trivial parameterizations for both spatially-averaged χ¯ and the structure parameter of temperature (CT2). For our purposes, we make use of high-fidelity data from direct numerical simulations of stratified channel flows.

KW - Integral length scale

KW - Outer length scale

KW - Ozmidov scale

KW - Stable boundary layer

KW - Structure parameter

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DO - 10.1007/s10652-020-09761-7

M3 - Article

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VL - 21

SP - 63

EP - 82

JO - Environmental Fluid Mechanics

JF - Environmental Fluid Mechanics

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ER -

On the dissipation rate of temperature fluctuations in stably stratified flows

Abstract

Keywords

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