Accession Number : AD0711121

Title :   EXPERIMENTAL INVESTIGATION OF THE TRAJECTORIES AND VELOCITIES OF SOLID PARTICLES ENTRAINED BY FLUID FLOWS IN CASCADE NOZZLES.

Descriptive Note : Technical rept.,

Corporate Author : CINCINNATI UNIV OHIO DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Tabakoff,W. ; Hussein,M.

Report Date : AUG 1970

Pagination or Media Count : 31

Abstract : The study of the trajectories and velocities of solid particles suspended in a fluid flowing through a cascade nozzle is of importance to the investigation of erosion damage sustained by the blades. In general, the trajectories and velocities of the particles depend upon the slope of the cascade nozzle, particle and flow inlet conditions, particle material density, mean diameter, angle of attack and initial place of collision. The particles are more likely to follow the fluid streamlines when their material density is of the same order of magnitude as that of the fluid and when their mean diameter is small. In the investigation, a cascade row of turbine blades was mounted in a cascade tunnel to produce the desired gas-particle flow. A high speed camera was used to photograph the flow, and the subsequent film analysis provided the data for the particle velocities and the particle paths through the cascade nozzle. The particles used are of mean diameter of 1000 microns. (Author)

Descriptors :   (*TURBINE BLADES, *TWO PHASE FLOW), PARTICLE TRAJECTORIES, VELOCITY, CASCADE STRUCTURES, NOZZLES

Subject Categories : Non-electrical Energy Conversion
      Hydraulic and Pneumatic Equipment
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE