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Effects of flameholder blockage on emissions and performance of lean premixed-prevaporized combustorsResults from a parametric study are presented. Tests were on conducted at inlet air pressure of 300,000 and 500,000 pascals, inlet air temperatures of 600K, 700K and 800K, reference velocites from 20 to 35 meters per second, and equivalent ratios from the lean stability limit to 0.7 using Jet A fuel. The tests were conducted in a closed duct test facility. Results from the test support the theory that flameholder blockage is one of the major determinants of the size and shape of the recirculation zone. The test data show that higher blockage with its larger recirculation zone provides more residence time which leads to more NOx formation.
Document ID
19790016835
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Duerr, R. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Publication Information
Publication: Premixed Prevaporized Combustor Technol. Forum
Subject Category
Aircraft Propulsion And Power
Accession Number
79N25006
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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