Session: 04-34 Combustion Experiments III

Paper Number: 153181

Measurement of Particulate Matter and its Oxidation in a Multi-Sector Rich-Quench-Lean Combustor 

This paper analyzes 2D soot volume fraction and OH distributions in the fuel-rich primary zone of a three-nozzle rich-burn, quick-quench, lean-burn (RQL) combustor operating with Jet A fuel at elevated pressure and temperature. Measurements are made using laser induced incandescence (LII) and OH planar laser induced fluorescence (PLIF), yielding soot volume fraction in parts-per-million and relative OH concentration. Tests are conducted at a combustor inlet temperature of 575 K, with pressures ranging from 270-480 kPa and global equivalence ratios from 0.1 and 0.2. The instantaneous images indicate that soot and OH occupy different spatial regions of the combustor across all test points, with soot from the central flame primarily residing between the central recirculation zone and the OH-containing fuel-lean side of the spray flame between injectors. Statistical analysis demonstrates that – while the total amount of soot in the combustor increases with equivalence ratio at a constant pressure – the percentage of the soot that overlaps with the OH decreases. Similarly, the percentage of soot that overlaps with the OH decreases with increasing pressure at a fixed equivalence ratio. These results articulate the spatial distribution and overall trends of soot production in RQL combustors, as well as the effectiveness of OH in oxidizing soot at these conditions.

Presenting Author: Jeremiah Juergensmeyer Georgia Institute of Technology

Presenting Author Biography: Jeremiah Juergensmeyer is a Ph. D. student at the Georgia Institute of Technology Ben T. Zinn Combustion Lab. His research focuses on sustainable combustion through emission reduction in both rich-burn quick-quench lean-burn and lean-premixed-prevaporized combustors.

Authors:

Jeremiah Juergensmeyer Georgia Institute of Technology
Russell Mcgrath Georgia Institute of Technology
Jonathon Miller Georgia Institute of Technology
Robert Bond Georgia Institute of Technology
Shawn Wehe Georgia Institute of Technology
Wenting Sun Georgia Institute of Technology
Yi Chen Mazumdar Georgia Institute of Technology
Adam Steinberg Georgia Institute of Technology