Mechanisms of Smoke Reduction in the High Pressure Combustion of Emulsified Fuels. Volumn I. Construction of Apparatus and Preliminary Experiments.
Abstract
This report documents progress made during the first year of a three-year study of the atomization and evaporation characteristics of emulsified and alternative fuels in model gas turbine engines. A significant part of this effort involves the development of spray drop-size diagnostics suitable for use in a combustion environment. A disc-in-duct combustor with a pipe I.D. of 15.04 cm and a disc O.D. of 7.19 cm has been constructed and operated. A significant amount of optical access is available through 3 x 4 in. quartz windows. A delavan 5.0 gallon per hour 45 deg cone angle hollow-cone nozzle has been completely characterized at atmospheric conditions on calibration fluid, Jet-A, a Jet-A/20% water macroemulsion, and a Jet-A/20% water microemulsion. Variations of drop size along the nozzle axis and radially outward have been documented. Modifications to the drop-sizing laser diffraction equipment to permit combustor measurements are described. Some preliminary data for a comparison of atomization of a neat fuel and a macroemulsion fuel when sprayed in high temperature/pressure air are presented. Recommendations are given for the coming year including further measurements in high temperature/pressure noncombusting air followed by measurements in an operating combustor. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1981
- Accession Number
- ADA108018
Entities
People
- Clifford A. Moses
- Lee G. Dodge
Organizations
- Southwest Research Institute