Publication Date:
2019-07-13
Description:
An experimental study was carried out to determine the effects of jet velocity and confinement on lean premixed-prevaporized propane/air blowout limits. The combustor consisted of a single hole flameholder within a quartz liner. Five flameholder plates and two quartz liners were used. Lean stability limits were mapped for confined propane jet in cylindrical combustor. Three zones of flame stability were observed depending on the liner and jet Reynolds number and the combustor geometry. At low Reynolds number the combustor was jet stabilized. As the Reynolds number was increased the combustor became either recirculation zone stabilized, or for small recirculation zone step sizes, the combustor was wall stabilized. The factors affecting stability seem to be the Reynolds numbers of the liner and inlet jet along with the flameholder step size. Stability was achieved at both laminar and turbulent conditions.
Keywords:
AIRCRAFT PROPULSION AND POWER
Type:
AIAA PAPER 79-0538
,
American Institute of Aeronautics and Astronautics, Annual Meeting and Technical Display; Feb 06, 1979 - Feb 08, 1979; Washington, DC
Format:
text
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