Investigation of Fuel Additive Effects on Sooting Flames.

Abstract

The objective of this research is to clarify the mechanisms responsible for the suppression of soot in flames by fuel additives. Measurements are limited to well-defined hydrocarbon/air prevaporized liquid- and gaseous-fueled flames. Emphasis is given to ferrocene in a diffusion flame fueled by prevaporized iso-octane. Nonperturbing laser/optical diagnostic techniques are used to relate changes in soot particulate size, number density, and volume fraction to additive concentration. Ferrocene is observed to suppress a visible soot plume completely and, in general, to intervene at a late combustion stage. Suppression is due to both size and number density reduction, which suggests that ferrocene enhances the oxidative burn-out of soot. In contrast, at an early combustion stage nearer the burner lip, a slight enhancement of soot observed with ferrocene seeding. Keywords: Additive, Ferrocene, Flame, Soot.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1987
Accession Number
ADA186403

Entities

People

  • Paul A. Bonczyk

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Air Platforms
  • Human Systems
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Alkenes
  • Alkynes
  • Axisymmetric
  • Barometric Pressure
  • Chemical Reactions
  • Combustion
  • Contractors
  • Contracts
  • Elements
  • Fuel Additives
  • Hydrocarbons
  • Light Scattering
  • Measurement
  • Metals
  • Scattering
  • Vapor Pressure

Readers

  • Combustion science or combustion engineering.
  • Internal Combustion Engine (ICE) Technology.

Technology Areas

  • Directed Energy