Accession Number:

ADA244849

Title:

Transport Phenomena and Interfacial Kinetics in Multiphase Combustion Systems

Descriptive Note:

Final rept. 1 Jan 1989-31 Dec 1990,

Corporate Author:

YALE UNIV NEW HAVEN CT HIGH TEMPERATURE CHEMICAL REACTION ENGINEERING LAB

Personal Author(s):

Report Date:

1991-02-01

Pagination or Media Count:

150.0

Abstract:

The performance of ramjets burning slurry fuels leading to condensed oxide aerosols and liquid film deposits, gas turbine engines in dusty atmospheres, or when using fuels from nontraditional sources e.g., shale-, or coal-derived, depends upon the formation and transport of small particles across non-isothermal combustion gas boundary layers BLs. Even airbreathing engines burning clean hydrocarbon fuels can experience soot formationdeposition problems e.g., combustor liner burnout, accelerated turbine blade erosion and hot corrosion. Moreover, particle formation and transport are important in many chemical reactors used to synthesize or process aerospace materials turbine blade coatings, optical waveguides,.... Accordingly, our research is directed toward providing chemical propulsion system engineers and materials-oriented engineers with new techniques and quantitative information on important particle- and vapor-mass transport mechanisms and rates. An interactive experimentaltheoretical approach has been used to gain understanding of performance-limiting chemical-, and massenergy transfer-phenomena at or near interfaces. This included the further development and exploitation of seeded laboratory flat flame burners, flow-reactors, and new optical diagnostic techniques. Resulting experimental rate data, together with the predictions of asymptotic theories were used as the basis for proposing and verifying simple viewpoints and rational engineering correlations for future designoptimization studies.

Subject Categories:

  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE