AAE 69000: Combustion Stability

Time Offered

TTh 10:30 – 11:45am

Course Instructor

Professor William E. Anderson

Course Description

Combustion instability is a natural phenomena that occurs in many reacting flow systems, including combustors used in power generation units, gas turbine propulsion systems, and rocket engines and motors. It is manifested by periodic pressure oscillations that are energized by oscillatory releases of heat. These regular oscillations of pressure and heat release can be coupled to structural, hydrodynamic, and acoustic resonances, and can lead to destruction of the component, sometimes in a spectacular fashion. This course covers the history of combustion stability, its appearance in practical systems, and analytical and experimental approaches for its study and prediction. High frequency combustion stability, the coupling between heat release and combustor acoustics, is emphasized. Course content includes regular lectures and a hands-on laboratory experience. Grade will be based on the presentation of a paper by the student on a special topic and a final exam.

Course Outline

  1. History of combustion stability; Rayleigh's Criterion
  2. Classifications of combustion stability and its occurrence in practical systems
  3. High frequency combustion stability and the wave equation
  4. Coupling mechanisms – kinetics, mixing, atomization, and vaporization
  5. Analytical approaches
  6. Experimental techniques
  7. Special topics (student lectures)
  8. Laboratory demonstrations

Prerequisites: ME 525 or AAE 539 or permission of instructor