TS - Dean Interactions in Curved Channel Flow

Abstract

A weakly nonlinear theory is developed to study the interaction of Tollmien - Schlichting waves and Dean vortices in curved channel flow. The predictions obtained from the theory agree well with results obtained from direct numerical simulations of curved channel flow, especially for low amplitude disturbances. At low Reynolds numbers the wave interaction is generally stabilizing to both disturbances, though as the Reynolds number increases, many linearly unstable TS waves are further destabilized by the presence of Dean vortices. (Author) (KR)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA227104

Entities

People

  • Bart A. Singer
  • Gordon Erlebacher
  • Thomas A. Zang

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Channel Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Eigenvalues
  • Eigenvectors
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Navier Stokes Equations
  • Partial Differential Equations
  • Poiseuille Flow
  • Reynolds Number
  • Steady State
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fluid Dynamics.
  • Graph Algorithms and Convex Optimization.