Numerical Simulation of Collapsing Turbulent Wakes-Comparison of Turbulence Closures and Numerical Schemes

Abstract

The collapse of a partially mixed region generated by a prescribed amount of turbulence deposited on a linearly stratified ambient ocean is studied numerically. Different turbulent closures such as first and second order are used to model the turbulent stresses. The resulting equations are solved numerically in a finite-difference formalism of the primitive form of the equations in a box region several times the size of the mixed region. The resulting maximum observed mean field velocities, densities, and turbulent energies in the fluid are obtained and cross-compared for different closures and numerical methods.

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Document Details

Document Type
Technical Report
Publication Date
Mar 22, 1979
Accession Number
ADA072143

Entities

People

  • A. Warn-varnas
  • G. Hain
  • J. Block
  • S. A. Piacsek

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundaries
  • Boundary Layer
  • Computational Fluid Dynamics
  • Difference Equations
  • Energy
  • Equations
  • Froude Number
  • Grids
  • Internal Waves
  • Mesh
  • Potential Energy
  • Simulations
  • Stratified Fluids
  • Stresses
  • Turbulence
  • Waves

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.