Accession Number : AD0286666

Title :   FLUID AMPLIFICATION. 2. FLOW VISUALIZATION-COMPRESSIBLE FLUIDS

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : KETO,JORMA R.

Report Date : 20 AUG 1962

Pagination or Media Count : 1

Abstract : A study was made on the methods generally used in flow visualization and their applicati ns to pure fluid systems. Comparison details of the shadowgraph, schlieren, and interferometer techniques are reported; also, a generalized equation is derived for the schlieren method, relating light intensity to gas density for two-dimensional flow. Construction details are presented on two schlieren-type systems, together with illustrated results of typical images obtained. Improved visualization techniques were realized using helium, volatile liquids, and condensible vapor.A technique was developed for sealing interchangeable pure fluid elements to optical windows permitting repeated use without replacing the sealing materials or cleaning windows. Additional data will be issued on the basic principles and techniques applicable to pure fluid systems. (Author)

Descriptors :   *COMPRESSIBLE FLOW, *OPTICAL EQUIPMENT, *PNEUMATIC DEVICES, *SCHLIEREN PHOTOGRAPHY, OPTICS, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE