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CC BY-NC-ND V4.0, Open Access
Journal article
Planar laser-induced incandescence for the study of soot production in a multi-sector RQL Jet A combustor
Applications in energy and combustion science, Vol.18, p.100269
06/2024
Appears in Aviation Sustainability Center (ASCENT)
Abstract
Understanding the production of non-volatile particulate matter (nvPM), which is composed primarily of soot, is critical not only for reducing emissions but also for improving engine performance. While there has been significant prior work studying the fundamentals of soot formation, there is significantly less work that investigates soot formation with realistic aeroengine geometries, injectors, and fuels in high pressure conditions. In this work, soot production in a three-sector rich-quench-lean (RQL) aeroengine combustor is studied with Jet A fuel. Global equivalence ratios ranging of 0.10 to 0.20 and pressures ranging from 2.7 to 6.9 bar absolute (40 to 100 psia) are tested. In order to characterize in-situ soot production near the fuel injectors, two-dimensional laser-induced incandescence is utilized to estimate single-shot and average soot volume fractions. Time-resolved laser-induced incandescence is then used to create single camera and single laser-shot incandescence decay time images in order to infer how soot particle sizes evolve. Results show a significant increase in soot production at higher global equivalence ratios and higher pressures. Incandescence decay times, however, do not change significantly over the same range of conditions. These measurements can not only help understand soot distributions in practical RQL systems but also help improve future aeroengine combustor designs.
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•Soot production is studied in a multi-sector rich-quench-lean combustor.•Planar laser induced incandescence (LII) is used to estimate soot volume fraction.•Time-resolved LII is used to estimate soot particle decay times.•Soot increases significantly with global equivalence ratios from 0.10 to 0.20.•Soot volume fractions and decay time constants are measured from 2.7 to 6.9 bar.
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Details
- Title
- Planar laser-induced incandescence for the study of soot production in a multi-sector RQL Jet A combustor
- Creators
- Russell McGrath - Woodruff School of Mechanical Engineering, 801 Ferst Dr, Atlanta, 30332, GA, United StatesJeremiah Juergensmeyer - Solomon R. Guggenheim MuseumRobert Bond - Solomon R. Guggenheim MuseumEzekiel Bugay - Solomon R. Guggenheim MuseumShawn Wehe - Solomon R. Guggenheim MuseumDavid Wu - Solomon R. Guggenheim MuseumAdam Steinberg - Solomon R. Guggenheim MuseumWenting Sun - Georgia Institute of TechnologyYi Chen Mazumdar - Woodruff School of Mechanical Engineering, 801 Ferst Dr, Atlanta, 30332, GA, United States
- Publication Details
- Applications in energy and combustion science, Vol.18, p.100269
- Academic Unit
- Aviation Sustainability Center (ASCENT); Emissions
- Publisher
- Elsevier Ltd
- Grants
- 13-C-AJFE-GIT-080, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99901140739001842
- Language
- English
- Resource Type
- Journal article