Accession Number:

ADA278392

Title:

The Structure of High Reynolds Number Turbulent Boundary Layers, Part A

Descriptive Note:

Final technical rept. Dec 1989-Dec 1993

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Brasseur, James G.

Report Date:

1994-02-15

Pagination or Media Count:

17.0

Abstract:

We provide a summary of our accomplishments under a three-year mini URI program in collaboration with researchers at Yale and Princeton universities. Whereas the central theme of the program is high Reynolds number wall-bounded turbulence, studies at Penn State included 1 analysis of fundamental issues of scale interactions in high Reynolds number turbulence dynamics, 2 the use of the wavelet decomposition and generalized filtering techniques in describing the relationship between the Fourier-spectral description of scale and the physical-space description of structure, 3 direct numerical simulation of passive scalar sources in low Reynolds number turbulent boundary layers and analysis of scalar evolution in relationship to laboratory data, 4 the relationship between homogeneous turbulent shear flow and the inertial sublayer in high Reynolds number turbulent boundary layers, and 5 the development and application of sophisticated data analysis techniques which intimately combine graphical and quantitative analysis within a fully interactive Analytical Environment. A brief summary of the accomplishments in each area of development is presented. Turbulence, Turbulent boundary layers, Shear flows.

Descriptors:

• *TURBULENT BOUNDARY LAYER
• SIMULATION
• QUANTITATIVE ANALYSIS
• INTERACTIONS
• WALLS
• REYNOLDS NUMBER
• BOUNDARY LAYER FLOW
• FILTRATION
• SHEAR FLOW
• DECOMPOSITION
• BOUNDARY LAYER
• TURBULENCE
• TURBULENT FLOW

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE