Hairpin Vortex Formation in Poiseuille Flow Due to Two-Hole Suction

Abstract

A virtual-surface DNS is used to examine hairpin formation caused by a pair of suction holes below a laminar wall-bounded flow. The work models an experiment, presently underway, in which quasi-periodic hairpins are to be generated in a laminar plane-Poiseuille flow. We present some brief preliminary studies of vortex dynamics and find both symmetric and antisymmetric modes of shedding. We also examine the effect of inter-hole spacing on hairpin formation.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADP013669

Entities

People

  • D. B. Goldstein
  • Jonathan D. Cohen
  • V. Levinski

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Channel Flow
  • Engineering
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Laminar Flow
  • Layers
  • Poiseuille Flow
  • Pressure Gradients
  • Reynolds Number
  • Secondary Flow
  • Shear Flow
  • Technical Information Centers
  • Turbulent Boundary Layer
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster