Imaging System for Extending Evanescent-Wave Particle Velocimetry to Wall Turbulence

Abstract

This final report describes the two major pieces of equipment acquired under this DURIP grant, namely a pair of lasers and a high-speed intensified digital camera system. The equipment will be used to determine whether it is feasible to use the new evanescent wave "based particle" tracking velocimetry (PTV) technique to visualize a slice of the viscous sublayer in wall turbulence parallel to the wall in fully-developed turbulent channel flow. Understanding the characteristics of wall (bounded) turbulence, especially in the viscous sublayer, i.e., the thin flow region next to the wall where viscous effects dominate, is the key to understanding the drag and lift forces acting upon solid surfaces moving through a fluid.

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Document Details

Document Type
Technical Report
Publication Date
Nov 17, 2014
Accession Number
ADA615925

Entities

People

  • Minami Yoda

Organizations

  • Georgia Tech Research Corporation

Tags

Communities of Interest

  • Air Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Abstracts
  • Agreements
  • Aircraft Wings
  • Aircrafts
  • Cameras
  • Channel Flow
  • Department Of Defense
  • Digital Cameras
  • Evanescent Waves
  • Feasibility Studies
  • Flow
  • Fluid Dynamics
  • Helicopter Rotors
  • Particle Size
  • Particles
  • Students
  • Turbulence

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Research Science/Academic Research

Technology Areas

  • Directed Energy