A TIME-DEPENDENT SPATIAL MODEL FOR RADIANT HEAT TRANSFER IN DIESEL ENGINES

We have developed a fully three-dimensional spatial model of the instantaneous radiation heat transfer in direct ignition diesel engines. The model is based on the assumption that the primary source of radiation is from the soot formed on the fuel-rich side of the combusting spray plumes. The model then calculates view-factors to the various regions from the evolving plume using a spray correlation model. The soot is assumed to be a grey body radiating through an optically thin medium to the relatively cool components of the combustion chamber. Preliminary calculations using the model indicate that there are significant spatial and temporal variations in the incident radiation on various regions in the combustion chamber. These calculations were performed for a geometry and operating conditions of a production turbocharged medium speed engine at full load conditions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Fuels and Lubricants Meeting San Francisco, California, October 31-November 3, 1983. Reprinted from SP-557--Combustion of Heterogeneous Mixtures.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Chapman, M
  • Friedman, M C
  • Aghan, A
• Publication Date: 1983

Media Info

• Features: Figures; References; Tables;
• Pagination: 12 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion; Combustion chambers; Diesel engines; Fly ash; Heat transfer; Mathematical models; Time dependence; Traffic distribution
• Uncontrolled Terms: Radiant heating; Soot
• Old TRIS Terms: Combustion products
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00390918
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831725, HS-036 840
• Files: HSL, USDOT
• Created Date: Nov 30 1984 12:00AM