On the shear number effect in stratified shear flow
type: Item
instance of: scholarly article
title: On the shear number effect in stratified shear flow
zbMATH Open document ID: 0962.76035
author: Frank G. Jacobitz
author: Sutanu Sarkar
published in: Theoretical and Computational Fluid Dynamics
publication date: 2000-02-06T00:00:00Z
review text: The authors investigate the influence of the shear number on turbulence evolution in a stably stratified fluid. The shear number \(SK/\varepsilon\) is the ratio of a turbulence time scale \(K/\varepsilon\) to the shear time scale \(1/S\). Two series of direct numerical simulations are performed to study the role of this parameter: a moderate Reynolds number series with initial Reynolds number \(\text{Re}_\lambda= 44.72\), and high Reynolds number series with initial Reynolds number \(\text{Re}_\lambda= 89.44\). The Richardson number \(\text{Ri}= 0.15\) is constant in all simulations. The authors find that the shear number affects the spectral space dynamics. Turbulent transport coefficients decrease with increasing shear number.
Mathematics Subject Classification ID: 76F10
Mathematics Subject Classification ID: 76F45
Mathematics Subject Classification ID: 76F65
Mathematics Subject Classification ID: 76D50
zbMATH DE Number: 1399410
zbMATH Keywords: shear number
zbMATH Keywords: turbulence evolution
zbMATH Keywords: stably stratified fluid
zbMATH Keywords: direct numerical simulations
zbMATH Keywords: spectral space dynamics
MaRDI profile type: Publication
full work available at URL: s001620050114
OpenAlex ID: W1968708302
DOI: 10.1007/S001620050114
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description: scientific article; zbMATH DE number 1399410