Conference proceeding
Framing Camera Time-resolved Laser Induced Incandescence Measurements in a Rich Quench Lean Combustor
03/2026
Appears in Aviation Sustainability Center (ASCENT)
Abstract
Determining the size of soot particles in dynamic turbulent flames is critical for optimizing injector and combustor designs. In this work, we demonstrate the first use of a gigahertz-rate framing camera for planar time-resolved laser-induced incandescence (TiRe-LII) measurements in a rich quench lean (RQL) combustion system with Jet A fuel. In this method, the framing camera is able to capture the background luminosity, prompt LII signal, and temporal incandescence decay at up to 40 MHz. This enables shorter time constant fits than any prior 2D TiRe-LII experiments, enhancing confidence in soot particle size and soot volume fraction estimates. Measurements are performed at a preheat temperature of 600 K, pressures ranging from 59 to 120 psig, and equivalence ratios from 0.26 to 0.29. Initial results show clear soot volume fraction and particle size changes with pressure and equivalence ratio.
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Details
- Title
- Framing Camera Time-resolved Laser Induced Incandescence Measurements in a Rich Quench Lean Combustor
- Creators
- Eric Douglas (Author) - Georgia Institute of TechnologyRahul Vishwanath (Author) - Georgia Institute of TechnologyHarshit Dhayal (Author) - Georgia Institute of TechnologyAdam Steinberg (Author) - Georgia Institute of TechnologyWenting Sun (Author) - Georgia Institute of TechnologyYi Chen Mazumdar (Author) - Georgia Institute of Technology
- Academic Unit
- Aviation Sustainability Center (ASCENT); Emissions
- Grants
- 13-C-AJFE-GIT-080, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99901389805201842
- Language
- English
- Resource Type
- Conference proceeding