Simultaneous 2-D imaging of OH radicals and soot in a diesel flame by laser sheet techniques

Conference · Sun Sep 01 00:00:00 EDT 1996

OSTI ID:282554

Kosaka, Hidenori; Nishigaki, Takahiro; Kamimoto, Takeyuki ^[1]; Sano, Takashi; Matsutani, Akira; Harada, Shinichi ^[2]

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1. Tokyo Inst. of Tech. (Japan)
2. Isuzu Motors, Ltd., Southfield, IL (United States)

The OH and soot in an unsteady flame, which was achieved in a rapid compression machine, were visualized simultaneously by the laser-induced fluorescence and laser-induced scattering techniques. The fuel mixture consisting of 90% paraffin hydrocarbon (reference fuel) and 10% polypropylene-glycol was used to reduce the optical attenuation caused by dense soot cloud. The simultaneous images of the fluorescence from OH and scattering from soot show that the soot and OH exist separately from each other in the leading portion of the spray flame, and the OH is formed earlier than the soot in the near field region of spray flame.

• OSTI ID: 282554
• Report Number(s): CONF-960204-; ISBN 1-56091-787-3; TRN: IM9638%%352
• Resource Relation: Conference: International congress and exposition of the Society of Automotive Engineers (SAE), Detroit, MI (United States), 26-29 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Advances in engine combustion and flow diagnostics; PB: 307 p.
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DIESEL FUELS
COMBUSTION KINETICS
FLAMES
GAS ANALYSIS
HYDROXYL RADICALS
SOOT
CONCENTRATION RATIO
IMAGES