Accession Number:

ADA399039

Title:

Improved Gas Turbine Performance

Descriptive Note:

Final rept. no 8.

Corporate Author:

IMPERIAL COLL OF SCIENCE TECHNOLOGY ANDMEDICINE LONDON (UNITED KINGDOM)

Personal Author(s):

Report Date:

2002-02-01

Pagination or Media Count:

11.0

Abstract:

The three main findings of the research of this contract were the identification of combustion oscillations caused by high strain rates and consequent near-periodic extinction and relight, the effect of oscillations on emissions of nitrous oxides, and the quantification of the extent to which the amplitude of the oscillations could be reduced by practically acceptable methods. In addition, consideration has been given to the development of calculation methods to represent the oscillating flows and to guide the development of control procedures. The overall outcome is the ability to control, with comparatively simple procedures, combustion oscillations with premixed methane and air burning in a duct with a sudden expansion and stemming from a combination of acoustic and stabilization effects.

Subject Categories:

  • Combustion and Ignition
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE