Accession Number:

ADA031233

Title:

Mechanisms of Exhaust Pollutants and Plume Formation in Continuous Combustion

Descriptive Note:

Interim scientific rept. no. 2, 1 May 1975-28 Feb 1976

Corporate Author:

CALIFORNIA UNIV IRVINE COMBUSTION LAB

Personal Author(s):

Report Date:

1976-06-01

Pagination or Media Count:

84.0

Abstract:

An analytical and experimental study is being conducted to promote an understanding of the processes governing the emission characteristics of continuous combustion power sources and thus provide a basis for reducing adverse environmental effects and for controlling plume signatures resulting from aircraft operations. The modeling development can, in addition, be readily adapted to dump combustor and gas turbine combustion. The configuration chosen for the study is an opposed-jet laboratory combustor OJC. Three numerical programs are used for modeling purposes. The current year has emphasized the utility and range of applicability of the numerical methods for the case of isothermal flow. Eddy viscosity models and boundary condition specification have received the greatest emphasis in a series of systematic test of prediction against experiment. The numerical methods are currently being expanded to include propane as well as methane oxidation kinetics. Evaluation of the numerical codes for the case of hot, reacting flow will be the emphasis of the continuation year. Preheat capability has been added to the experimental dimension of the study. In addition, extensive evaluation of chemical transformation of nitrogen oxides while sampling combustion products is in progress.

Subject Categories:

  • Combustion and Ignition
  • Jet and Gas Turbine Engines
  • Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE