Studies of Atmospheric Waves and Turbulence Processes Using Numerical Modeling and Atmospheric Measurements

Abstract

We find stratification dominates the dynamics in the edge regions of shear layers. Spectral slopes consistent with predictions by Bolgiano (1959) for stratified turbulence are observed during the initial stages of the shear-flow evolution. Only minimal modification to our existing Boussinesq code was required o conduct the gravity-wave breaking simulations. Propagation of the wave during turbulence evolution results in a trail of mixed fluid; unlike the turbulent shear layer which concentrates mixing in a fixed layer Additional funding is required to conduct higher-Re wave-breaking solutions and to further diagnose differences between the wave breaking and shear simulations. Dr. Werne presented work at the European Geophysical Society and the Monterey DoD HPCMO meeting.

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Document Details

Document Type
Technical Report
Publication Date
Feb 06, 2002
Accession Number
ADA401249

Entities

People

  • D. Fritts
  • J. Werne

Organizations

  • Northwest Research Associates

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Contracts
  • Flow
  • Fluid Dynamics
  • Gravity
  • Gravity Waves
  • Layers
  • Measurement
  • Military Research
  • Mixing
  • Personal Information Managers
  • Reynolds Number
  • Shear Flow
  • Simulations
  • Turbulence
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Fluid Dynamics (CFD)