Accession Number:

ADA609804

Title:

Subgrid Scale Modeling For LES Simulation of Flow in a Turbulent Bottom Boundary Layer

Descriptive Note:

Annual rept.

Corporate Author:

FLORIDA ATLANTIC UNIV BOCA RATON DEPT OF OCEAN ENGINEERING

Report Date:

2000-09-30

Pagination or Media Count:

7.0

Abstract:

The long-term goal of this work is to develop an accurate and efficient LES large-eddy simulation model of turbulent flows in oceanic boundary layers. The major objectives to be achieved are 1 Acquire better understanding of specific properties of oceanic boundary layers, particular attention being paid to statistics of small-scale coherent structures and their adequate representation by subgridscale SGS models. 2 Implement the Smagorinsky and dynamic SGS models and validate them for oceanic boundary layers through comparison with direct numerical simulations DNS and autonomous underwater vehicle AUV field data. 3 Develop and test a SGS model capable of accurate parameterization of the effects of small-scale coherent structures. The work involves theoretical analysis, numerical computations, and comparison with field measurements. The primary research tools are three-dimensional DNS and LES models, which allow simulation of turbulent layers in shallow water.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE