Single-Camera Time-Resolved Laser-Induced Incandescence Measurements in a RQL Aeroengine Combustor

Details

• Creators:
  McGrath, Russell ; Bugay, Ezekiel M. ; Juergensmeyer, Jeremiah ; Zheng, Andy X. ; Wu, David ; Steinberg, Adam ; Sun, Wenting ; Mazumdar, Yi Chen
• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment ; Georgia Institute of Technology
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy
• Subject/TRT Terms:
  ASCENT Aviation Fuels Cameras Combustion Laser-induced Incandescence Lasers Particles Rich-burn Quick-mix Lean-burn Combustor Soot Primary Particle Size Soot Volume Fraction
• Publication/ Report Number:
  McGrath_TiReLII_USNCM2023
• Resource Type:
  Proceedings
• Right Statement:
  Open Access
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment
• Abstract:
  Understanding and measuring the formation of non-volatile particulate matter is important for minimizing emissions and improving the design of aeroengines. In rich-burn, quick-mix, lean-burn (RQL) combustors, significant quantities of soot are formed near the injectors, some of which is later oxidized downstream. In order to better understand the soot formation dynamics in RQL burners, diagnostics that can measure both soot volume fraction and estimate soot particle sizes are needed. In this work, we describe the design, construction, and control of a high pressure RQL aeroengine combustor that is operated with Jet A fuel. Next, the development and implementation of two-dimensional single-camera time-resolved laser-induced incandescence (TiRe-LII) technique is described. In this technique, a single laser pulse is formed into a sheet and used to heat the soot inside the combustor. Then, a single ultra-high-speed camera is used to capture both the prompt LII signal and the soot incandescence decay over time at up to 10 MHz. By combining these images with a TiRe-LII model that is validated against soot sampling results from a Jet A fame, it is possible to estimate both the primary soot particle size and the soot volume fraction near the fuel injectors. By combining these measurements, a clearer picture of soot formation can be determined for RQL combustion.
• Content Notes:
  Citation: McGrath, R., Bugay, E. M., Juergensmeyer, J., Zheng, A. X., Wu, D., Steinberg, A., Sun, W., & Mazumdar, Y. C. (2023, March). Single-camera time-resolved laser-induced incandescence measurements in a RQL aeroengine combustor. In 13th United States national combustion meeting. USNCM, Sub topic: Diagnostics (pp. 22-31).
• Format:
  PDF
• Funding:
  13-C-AJFE-GIT-080
• Collection(s):
  Federal Aviation Administration
• Main Document Checksum:
  urn:sha-512:35c2ce33b72c240bc6f2d32c1d26d775c1fc3d15ac3f3eaa3180f74cc60127e593e69531aaf8f34fe7d1b166236128db96a0e58b7ee8cb49cbfe783a48e076ec
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/92415/dot_92415_DS1.pdf
• File Type:
  [PDF - 1.97 MB ]