Accession Number : AD0733077

Title :   An Experimental Study of the Switching Dynamics of Monostable Fluid Amplifiers.

Descriptive Note : Technical rept.,

Corporate Author : LEHIGH UNIV BETHLEHEM PA DEPT OF MECHANICAL ENGINEERING AND MECHANICS

Personal Author(s) : Ozgu,Mustafa R. ; Stenning,Alan H.

Report Date : OCT 1971

Pagination or Media Count : 38

Abstract : The transient switching times of monostable fluid amplifiers were determined experimentally using a large model with a power nozzle width W of 3/4 in. Straight and convex attachment walls of equal length were tested. Water was used as the fluid and the flow field was made visible by generating hydrogen bubbles at the power nozzle exit. Three different Reynolds numbers based on W were used. The control slow was applied as a step, starting from an initial value of zero. Effects of attachment wall shape, opposite wall setback, control flow, load changes on the active output leg, Reynolds number and splitter position on the transient switching times were studied. It was desired to know whether the convex attachment wall provided better switching characteristics than the straight attachment wall.

Descriptors :   (*FLUID AMPLIFIERS, COANDA EFFECT), TIME, MEASUREMENT, FLUID FLOW, RECOVERY, STATISTICAL DATA, WALLS, NOZZLES

Subject Categories : Fluidics and Fluerics

Distribution Statement : APPROVED FOR PUBLIC RELEASE