Structure and Control of the Wall Region in a Turbulent Boundary Layer

Abstract

In the past decade, our group at Cornell has developed a new approach to turbulent flows. This approach uses low dimensional dynamical models to better understand the time dependent behavior of large scale, or energy dominated, features in turbulent and other complex flows. We have applied our approach to the problem of controlling the turbulent boundary layer, with substantial progress. Our objectives as we continue with this effort are: (1) To explore further the control of the boundary layer in turbulent channel flow, refining the control algorithm and bringing more information from the low-dimensional models to bear on the problems of state estimation and control. (2) To make an extensive evaluation of the potential of compliant surfaces for turbulent drag reduction through the use of low-dimensional models and direct simulations of turbulent flow over a compliant surface.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1999
Accession Number
ADA378326

Entities

People

  • Gal Berkooz
  • John Lumley
  • Sidney Leibovich

Organizations

  • Sibley School of Mechanical and Aerospace Engineering

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Boundaries
  • Boundary Layer
  • Channel Flow
  • Control Systems
  • Drag Reduction
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Layers
  • Mechanical Properties
  • Mechanics
  • Shear Stresses
  • Simulations
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Distributed Systems and Data Platform Development
  • Fluid Dynamics.