Accession Number : ADA187831

Title :   Measurements of Gas Turbine Combustor and Engine Augmentor Tube Sooting Characteristics.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Grafton, Thomas A , III

PDF Url : ADA187831

Report Date : Sep 1987

Pagination or Media Count : 68

Abstract : A methodical investigation was conducted to examine soot particle sizing techniques and data acquisition apparatus so as to better understand soot particle properties in and immediately aft of a typical gas turbine combustor. Three wavelength light transmittance and multiple angle forward light scattering particle sizing techniques were used. The original objectives of this thesis were (1) to modify the existing hardware to better simulate the flow behavior in an actual engine, (2) to obtain accurate particle sizing using a combination of transmittance and scattering measurements within the T-63 combustor, (3) to explore the effects that augmentor tube flow rate has on particle agglomeration and mass concentration, and (4) to reexamine the effects that varied fuel-air ratios have on the exhaust particle mean diameter. Mean particle sizes were found to be between .77 microns and .80 microns at the exit of the augmentor tube. Keywords: Optical sizing of soot; Gas turbine combustors; Exhaust augmentor tubes.

Descriptors :   *SOOT, *LIGHT SCATTERING, *JET ENGINE EXHAUST, AGGLOMERATES, AUGMENTATION, COMBUSTORS, DIAMETERS, FLOW RATE, FREQUENCY, FUEL AIR RATIO, GAS TURBINES, LIGHT TRANSMISSION, MEAN, MEASUREMENT, PARTICLE SIZE, PARTICLES, RATES, FORWARD SCATTERING, TUBES, TEST EQUIPMENT, DATA ACQUISITION, COMBUSTION PRODUCTS, MASS, OPTICAL PROPERTIES, TURBOSHAFT ENGINES, FUEL ADDITIVES, THESES, LASERS

Subject Categories : Combustion and Ignition
      Test Facilities, Equipment and Methods
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE