A numerical analysis of supersonic intake buzz in an axisymmetric ramjet engine

Hyo Won Yeom, Hong Gye Sung, Vigor Yang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A numerical analysis was conducted to investigate the inlet buzz and combustion oscillation in an axisymmetric ramjet engine with wedge-type flame holders. 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 a combined scheme comprising of a low-Reynolds number k-ε two-equation model and Sarkar’s compressible turbulence model. Detailed flow phenomena such as inlet flow aerodynamics, flame evolution, and acoustic excitation as well as their interactions, are investigated. Mechanisms responsible for driving the inlet buzz are identified and quantified for the engine operating at subcritical conditions.

Original languageEnglish
Pages (from-to)165-176
Number of pages12
JournalInternational Journal of Aeronautical and Space Sciences
Volume16
Issue number2
DOIs
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Materials Science(all)
  • Aerospace Engineering
  • Electrical and Electronic Engineering

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