Conference proceeding
Fuel and Operating Condition Effects on Lean Blowout in a Swirl-Stabilized Single-Cup Combustor
AIAA Scitech 2020 Forum, Vol.1
AIAA Scitech Forum (Orlando, Florida, 01/06/2020–01/10/2020)
2020
Handle:
https://hdl.handle.net/2376/120576
Appears in Aviation Sustainability Center (ASCENT)
Abstract
As alternative jet fuels are introduced into the market, understanding operability limits, in particular the lower stability limit, becomes imperative for safety and the approval of these new fuels. Previous experiments have indicated that at elevated temperatures, chemical properties were highly correlated to lean blowout (LBO) limits in a single-cup, swirl-stabilized combustor referred to as the referee combustor. Low pressure and low temperature experiments also performed in the referee combustor demonstrated physical property dependency due to poor atomization. This agreed with trends seen in an auxiliary power unit (APU) at similar pressure and temperature conditions. Four fuels with varying physical and chemical properties were observed at intermediate conditions of Tair = Tfuel = 305-355K, P = 107kPa, and ΔP/P = 2-6% to examine fuel property and operating condition effects on physical and chemical property dependence. Change over from physical to chemical property dependence was found to occur over a range of conditions rather than a single point. Changes in pressure drop across the combustor dome were found to change the relative LBO limits of the fuels, and demonstrated a change from physical to chemical property dependence. Analysis via random forest regression demonstrated that an approximate Weber number was the strongest parameter to correlate fuel properties to combustor LBO.
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Details
- Title
- Fuel and Operating Condition Effects on Lean Blowout in a Swirl-Stabilized Single-Cup Combustor
- Creators
- Jennifer Colborn - University of DaytonJoshua S. Heyne - University of DaytonTyler H. Hendershott - University of DaytonScott D. Stouffer - University of DaytonErin Peiffer - University of DaytonEdwin Corporan - Air Force Research Laboratory
- Publication Details
- AIAA Scitech 2020 Forum, Vol.1
- Conference
- AIAA Scitech Forum (Orlando, Florida, 01/06/2020–01/10/2020)
- Academic Unit
- Aviation Sustainability Center (ASCENT); Alternative Jet Fuel
- Grants
- 13-C-AJFE-UD-, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99900621893401842
- Language
- English
- Resource Type
- Conference proceeding