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

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 nu...

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Main Authors: Warn-Varnas, A, Piacsek, S A, Hain, G, Block, J
Format: Report
Language:English
Subjects:
COLLAPSE
DENSITY
FINITE DIFFERENCE THEORY
Fluid Mechanics
INTERNAL WAVES
LPN-NRL-G01-11
MIXING
NUMERICAL ANALYSIS
OCEAN MODELS
OCEANS
PARTIAL DIFFERENTIAL EQUATIONS
Physical and Dynamic Oceanography
STRATIFICATION
STRESSES
TURBULENCE
TURBULENT FLOW
VELOCITY
WAKE
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creator Warn-Varnas, A
Piacsek, S A
Hain, G
Block, J
description 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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source DTIC Technical Reports
subjects COLLAPSE
DENSITY
FINITE DIFFERENCE THEORY
Fluid Mechanics
INTERNAL WAVES
LPN-NRL-G01-11
MIXING
NUMERICAL ANALYSIS
OCEAN MODELS
OCEANS
PARTIAL DIFFERENTIAL EQUATIONS
Physical and Dynamic Oceanography
STRATIFICATION
STRESSES
TURBULENCE
TURBULENT FLOW
VELOCITY
WAKE
title Numerical Simulation of Collapsing Turbulent Wakes-Comparison of Turbulence Closures and Numerical Schemes
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