Combustion Oscillation in a Staged LPP Combustor

Abstract

The presence of combustion oscillation caused by self amplification of the pressure and heat release fields, is very common within Lean Premixed Prevaporised (LPP) combustors. After suffering significant structural damage from oscillations of this type an axially staged combustor was subjected to a programme of diagnostic testing to establish a series of safe running conditions. Using fuel staging to vary the local air to fuel ratios (AFR), a series of conditions exhibiting much reduced levels of oscillation were identified.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2001
Accession Number
ADP011161

Entities

People

  • I. R. Mckenzie
  • J. R. Tilston
  • James A. Austin

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Amplitude
  • Combustion
  • Combustors
  • Data Acquisition
  • Data Processing
  • Dynamic Pressure
  • Engines
  • Flow
  • Frequency
  • Measurement
  • Military Aircraft
  • Power Spectra
  • Temperature Gradients
  • Test Facilities
  • Turbofan Engines
  • Vehicles

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Internal Combustion Engine (ICE) Technology.
  • Systems Analysis and Design