'E-9': Stability Theory and Boundary-Layer Transition

Abstract

Successful low-drag design employs methods of boundary-layer control to delay the transition of unstable laminar boundary layers, but a suitable comprehensive theory is needed to guide prediction and control of boundary-layer transition for low-drag hydrodynamics. This report suggests new and less formal nonlinear theories, which combine the growth rates and frequency dependence of the two-dimensional Tollmien-Schlichting waves (which are the basis of the 'e-9' method) and the three-dimensional nonlinear processes of modern stability theory. These could ultimately lead to improvements in the understanding and manipulation of the transition process in low-drag hydrodynamics, and to the inclusion of disturbance effects.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1977
Accession Number
ADA038908

Entities

People

  • J. Aroesty
  • S. A. Berger

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Boundary Layer Control
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Frequency
  • Heat Transfer
  • Hydrodynamics
  • Incompressible Flow
  • Laminar Boundary Layer
  • Reynolds Number
  • Turbulent Flow
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Organizational Process Management (OPM).
  • Wave Propagation and Nonlinear Chaotic Dynamics.