Accession Number : AD0783791

Title :   Low Speed Flow Visualization Using Holography and the Development of a Rapid Data Reduction System for Holographic Interferometry.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Pope,David Lawless

Report Date : JUN 1974

Pagination or Media Count : 62

Abstract : Flow visualization of low speed flow has been obtained by the injection of a thin stream of gas with a refractive index which differs from that of the uniform flow in the wind tunnel. A frozen fringe hologram of the introduction of this gas indicates regions of fringe shift. A pathline is produced by connecting points of maximum fringe shift. A rapid means has been developed to handle data on fringe formation from a photograph of a reconstructed holographic interferogram. Data points are gathered using a digitizer and a mini-computer. (Modified author abstract)

Descriptors :   *Flow visualization, *Holography, *Interferometry, *Low velocity, *Wind tunnel tests, *Data reduction, Data processing, Computer applications, Mathematical models, Injection, Theses, Gas flow

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE