AASERT: Critical-Layer Absorption in Stratified Flows

Abstract

Laboratory experiments were carried out to investigate the behavior of a stratified shear layer forced by a contiguous turbulent layer. The aim was to study the interaction of shear with the internal waves generated in the stratified layer, in particular, the absorption of internal waves at the critical layer. A set of complex phenomena appeared in the stratified shear layer, however, masking the critical layer phenomena and signifying several types of instabilities. The stratified turbulence so generated was studied extensively using state-of-the-art flow diagnostic techniques. Several new inferences on the nature of sheared stratified turbulence were also made.

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Document Details

Document Type
Technical Report
Publication Date
Aug 22, 2000
Accession Number
ADA381163

Entities

People

  • Harindra J. S. Fernando

Organizations

  • Arizona Board of Regents

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Buoyancy
  • Fluid Dynamics
  • Fluid Mechanics
  • Frequency
  • Instability
  • Internal Waves
  • Layers
  • Mechanics
  • Mixing
  • Richardson Number
  • Shear Flow
  • Stratified Fluids
  • Turbulence
  • Turbulent Mixing
  • Waves

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Systems Analysis and Design

Technology Areas

  • AI & ML