Flameholder Combustion Instability Study. Volume I. Analytical Considerations.

Abstract

Rumble is characterized as a combination of stable and unstable longitudinal acoustic modes that interact with each other while exchanging energy. The final result is a system oscillation of finite amplitude with a frequency that bears no relation to the acoustic frequency, but occurs at a level somewhere among those of the modes under consideration. The present work involves a non-linear theory which allows for the inclusion of rumble-related phenomena that a linear theory cannot handle while using a combustion model previously derived in linear stability work. The final equations have been programmed for use in a digital computer. The use of the computer program is explained in this document, and illustrations with sample input and output are given. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA060073

Entities

People

  • G. E. Smith
  • M. Platt
  • W. Jansen

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Admittance
  • Acoustic Frequencies
  • Acoustic Properties
  • Acoustic Waves
  • Acoustics
  • Burners
  • Combustion
  • Computational Science
  • Computer Programs
  • Crystal Lattice Vibrations
  • Differential Equations
  • Engineering
  • Plastic Explosives
  • Sea Level
  • Thermal Propulsion Systems
  • Turbines
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion and Flow Dynamics.
  • Computer Science.