Wall Effects on Combustion in an Engine.
Abstract
Basic studies of the interaction of a premixed hydrocarbon/air flame with a planar wall have been carried out; these studies were motivated by a reciprocating-piston-engine combustion. The principal experimental methodology was probing of burner-stabilized flames by laser Raman spectroscopy, while the theoretical methodology combined limit-process expansions exploiting large activation energy and numerical integration. The engineering implications of these fundamental studies are now summarized. First, investigations to elucidate the source of unburned hydrocarbon emissions indicated that quenching of a propagating flame near a cold (conventional metallic-alloy) wall was primarily owing to thermal effects (as opposed to radical absorption and recombination); however, quench-layer contents persisting near a single cold wall after the combustion event are oxidated before blowdown. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1983
- Accession Number
- ADA124431
Entities
People
- Francis E. Fendell