Accession Number:

ADA191253

Title:

Final Report on AFOSR (Air Force Office of Scientific Research) Contract F49620-83-C-0064 on Massachusetts Institute of Technology, Cambridge. Volume 1.

Descriptive Note:

Rept. for 1 Feb 83-30 Nov 84,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MATHEMATICS

Personal Author(s):

• Orszag, Steven A.

Report Date:

1987-05-01

Pagination or Media Count:

50.0

Abstract:

This document contains papers which summarize work done on this research project. The major results include 1 Development of renormalization group techniques for large-eddy simulations of turbulent flows 2 The first direct numerical simulation of turbulent spots in channel and boundary layer flows 3 The further development of spectral methods for turbulence simulations 4 The identification of secondary instability modes in free shear layers 5 The development of an efficient multi-grid marching method for solution of the parabolized Navier-Stokes equations 6A mathematical analysis of boundary conditions for the parabolized compressible Navier-Stokes equations and 7 The further development of a method to improve numerical solution of singular perturbation problems by use of asymptotic approximations.

Descriptors:

• *BOUNDARY LAYER FLOW
• *TURBULENCE
• APPROXIMATION(MATHEMATICS)
• ASYMPTOTIC SERIES
• BOUNDARIES
• COMPRESSIBLE FLOW
• LAYERS
• MATHEMATICAL ANALYSIS
• MATHEMATICAL MODELS
• NAVIER STOKES EQUATIONS
• NUMERICAL ANALYSIS
• PARABOLAS
• PERTURBATIONS
• SECONDARY
• SHEAR PROPERTIES
• SIMULATION
• SOLUTIONS(GENERAL)
• STABILITY
• TURBULENT FLOW
• CHANNEL FLOW
• EDDIES(FLUID MECHANICS)

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE