Accession Number : AD0465075


Title :   EXPERIMENTAL OPTIMIZATION OF THE REVERSE-FLOW SWIRL CHAMBER


Descriptive Note : Master thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH


Personal Author(s) : Fiorino Jr , Thomas D ; Poplawski, Robert


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/465075.pdf


Report Date : Apr 1965


Pagination or Media Count : 189


Abstract : A high-pressure-reverse-flow vortex chamber is a device designed for the purpose of separating sub-micron particles out of a gas flow. The requirements for separation of sub-micron particles from a curved flow are given, and an equation determining the minimum angular velocity necessary for separation in a vortex flow is presented. Three swirl (vortex) chambers were tested and modified to determine their optimum performance. Results show that inlet geometry, method of injection, injection nozzle size, exhaust diffuser spacing, and internal chamber dimensions are important factors when optimizing chamber performance. The testing and modification has led to the evolution of a swirl chamber that can develop an overall pressure ratio of 30 and a pressure recovery of 85% for a chamber inlet total pressure of 300 psig. The internal flow pattern of the swirl chamber was studied using talcum powder for particles and high-speed motion picture photography (7,000 fps) as an aid in observing gross particle movements. This study has verified the fact that the swirl chambers are basically-capable of separating sub-micron particles out of a gas flow.


Descriptors :   *GAS FLOW , *MATERIAL SEPARATION , EXPERIMENTAL DATA , OPTIMIZATION , THESES , VORTICES , PARTICLES , PRESSURE , SEPARATION , HIGH SPEED PHOTOGRAPHY , EXHAUST DIFFUSERS


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE