On the dissipation rate of temperature fluctuations in stably stratified flows

Journal article (2020)

Authors

S. Basu Atmospheric Remote Sensing - CEG
Adam W. DeMarco United States Air Force
Ping He University of Michigan
Research Group
Atmospheric Remote Sensing (CEG) (TU Delft)
Copyright: © 2020 S. Basu, Adam W. DeMarco, Ping He
DOI: https://doi.org/10.1007/s10652-020-09761-7
More Info
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Published Date

2020

Language

English

Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Atmospheric Remote Sensing

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.