Accession Number:

AD0836802

Title:

A MOIRE' OPTICAL SYSTEM FOR QUANTITATIVE BOUNDARY LAYER MEASUREMENTS.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1968-06-01

Pagination or Media Count:

57.0

Abstract:

The modification of a single pass schlieren system, to obtain quantitative data density gradient by using Moire patterns to measure the refractive index gradient presents a new simple and inexpensive optical system to assist in analyzing boundary layers. This paper includes a study of the effects of ruling line density and misalignment upon the measurements, and a feasibility study and verification test of the two dimensional capabilities on a cylinder. Set-up and alignment, and data reduction procedures are detailed. The system has yielded highly reproduceable results the temperature gradient on a heated vertical flat plate was measured with an average deviation of less than 2 and less than 10 was obtained for a cylinder. Author

Subject Categories:

  • Photography
  • Fluid Mechanics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE