3D Velocimetry Equipment for Evaluation of Real Roughness Effects in Wall Turbulence

Abstract

This grant supported the purchase of state-of-the-art particle-image velocimetry (PIV) equipment, necessary modifications to an existing boundary-layer wind tunnel and construction of roughness panels in Support of an AFOSR core grant (FA9550-05-1-0043). The equipment proposed was meant to significantly improve the PIV spatial dynamic range achievable in the Pi's lab as well as broaden the range of Reynolds numbers that could feasibly be studied to meet the goals of the Pi's current and future research efforts with AFOSR. In addition, significant modifications to an existing boundary- layer wind tunnel and construction of various roughness topologies were proposed to enhance the Pi's capabilities to study the influence of highly-irregular surface roughness on the character of wall-bounded turbulence. The PI is also utilizing the new PIV cameras procured with this DURIP funding to advance his development of microscale temperature-measurement methods in support of an AFOSR MURI grant (FA9550-05-1-O346) on which he is a co-PI.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 2006
Accession Number
ADA456833

Entities

People

  • Kenneth T Christensen

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Construction
  • Dynamic Range
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Instrumentation
  • Layers
  • Measurement
  • Particle Image Velocimetry
  • Personality
  • Reynolds Number
  • Roughness
  • Surface Roughness
  • Turbulence
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Research Science/Academic Research
  • Systems Analysis and Design