Accession Number : AD0772675

Title :   Simplified Lay-Out of Supersonic, Heterogeneous Ejectors.

Descriptive Note : Rept. for Jun 72-Apr 73,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Hasinger,Siegfried H.

Report Date : NOV 1973

Pagination or Media Count : 50

Abstract : A generalized analysis for supersonic ejectors with heterogeneous operating media and constant area mixing, which leads to a simple diagram for determining approximate values of ejector mass and area ratio, driver-gas Mach-number and temperature, is presented. Simplifications are obtained by considering that conservation of momentum and continuity dominates the ejector process, while conservation of energy, a condition which complicates ejector calculations, is of little influence in case of a supersonic ejector and amenable to an approximate treatment. The ejector layout diagram is also modified to provide information on off-design conditions. In a separate treatment the approximate ejector analysis is used as a first step for a refined layout, which more accurately observes conservation of energy, requiring an iteration process for a solution. (Modified author abstract)

Descriptors :   *Supersonic diffusers, *Ejectors, Supersonic flow, Fluid dynamics, Reynolds number, Friction, Nozzle area ratio, Iterations

Subject Categories : Fluid Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE