Inlet buzz and combustion oscillation in an axisymmetric ramjet engine

Hyo Won Yeom, Sung Jin Kim, Hong Gye Sung, Vigor Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A unified numerical analysis was conducted to investigate the inlet buzz and combustion oscillation in an axisymmetric ramjet engine. The inlet buzz phenomenon in the subcritical operation arises large pressure oscillation, combustion instability, engine surge, and thrust loss, etc. The physical model of concern includes the entire engine flow path, extending from the leading edge of the inlet center-body through the exhaust nozzle. The theoretical formulation is based on the Farve-averaged conservation equations of mass, momentum, energy, and species concentration, and accommodates finite-rate chemical kinetics and variable thermo-physical properties. Turbulence closure is achieved using the combined model of a low-Reynolds number k-ε two-equation model and Sarkar's compressible turbulence model. The detail flow structures such as buzz shock train, shock/boundary layer interaction, and flame fluctuation are observed. Both the driving source to the inlet buzz and buzz effects on both flow and flame evolutions are studied.

Original languageEnglish
Title of host publication48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Publication statusPublished - 2010
Event48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: 2010 Jan 42010 Jan 7

Publication series

Name48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Conference

Conference48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period10-01-0410-01-07

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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