Background-Oriented Schlieren Pattern Optimization

Abstract

This paper describes a test series to investigate background patterns used for the Background-Oriented Schlieren field density measurement technique. Several varying background patterns were substituted under similar fluid density conditions to visualize and isolate the effects of patterns in the background images. A qualitative comparison was completed of the flow visualization results of each background pattern to categorize background conditions that improved the flow visualization image. Changes in background patterns revealed significant changes in flow visualization. Pattern contrast, spacing and sizing all played large parts in the quality of the visual density gradient imaging during the test series.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2011
Accession Number
ADA552950

Entities

People

  • Jeffery E. Hartberger

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Cameras
  • Data Acquisition
  • Department Of Defense
  • Flow Visualization
  • Geometry
  • Governments
  • High Resolution
  • Image Processing
  • Light Sources
  • Metal Plates
  • Photographs
  • Photography
  • Test Equipment
  • Test Facilities
  • United States Government
  • Wind Tunnels

Readers

  • Computer Vision.
  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster