Linear stability analysis of baffled combustion chamber with radial and circumferential blades

Danning You, Vigor Yang

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)

Abstract

A linear acoustic analysis has been conducted to study the combustion instability characteristics of baffled combustion chambers. The theoretical formulation is based on a generalized three-dimensional wave equation. Normal mode expansion and spatial averaging techniques are implemented to solve for the acoustic motions in the chamber. Several specific effects of baffles are presented as mechanisms by which baffles eliminated combustion instabilities. Included are longitudinalization of transverse waves inside baffle compartments, restriction of velocity fluctuations near the injector face, and decreased oscillation frequency. Potential destabilizing influences of baffles are found to be the concentration of acoustic pressure or velocity at the injector face, depending on chamber geometry and excitation modes.

Original languageEnglish
Pages9219-9237
Number of pages19
Publication statusPublished - 2005
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: 2005 Jan 102005 Jan 13

Other

Other43rd AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period05-01-1005-01-13

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Linear stability analysis of baffled combustion chamber with radial and circumferential blades'. Together they form a unique fingerprint.

Cite this