Some Comments on the Modeling of the Turbulent Wake of a Self-Propelled Body in a Stratified Fluid

Abstract

The modeling of the turbulent wake of a self-propelled body in a stratified fluid is discussed. The scaling parameter is taken to be the internal Froude number, using the speed and diameter of the body and Vaisala frequency of the fluid. The ratio of the time for the wake to collapse to the characteristic time of the turbulence is related to model scale when the wake is turbulent up to and including the collapse. A number of criteria for turbulent wake are discussed. Numerical estimates are made, assuming typical values of the model speed and of the Vaisala frequency, of the minimum model size necessary for the existence of a turbulent wake at collapse.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1972
Accession Number
AD0738866

Entities

People

  • Chester E. Grosch
  • Edward Y. Kuo

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atmospheric Sciences
  • Buoyancy
  • Collapse
  • Contracts
  • Diameters
  • Energy
  • Fluid Dynamics
  • Frequency
  • Froude Number
  • Integrals
  • Models
  • New York
  • Propellers
  • Reynolds Number
  • Self Propelled
  • Stratified Fluids
  • Turbulence

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.