Route to chaos for combustion instability in ducted laminar premixed flames

Complex thermoacoustic oscillations are observed experimentally in a simple laboratory combustor that burns lean premixed fuel-air mixture, as a result of nonlinear interaction between the acoustic field and the combustion processes. The application of nonlinear time series analysis, particularly te...

Full description

Saved in:
Bibliographic Details
Published inChaos (Woodbury, N.Y.) Vol. 22; no. 2; p. 023129
Main Authors Kabiraj, Lipika, Saurabh, Aditya, Wahi, Pankaj, Sujith, R I
Format Journal Article
LanguageEnglish
Published United States 01.06.2012
Online AccessGet more information

Cover

More Information
Summary:Complex thermoacoustic oscillations are observed experimentally in a simple laboratory combustor that burns lean premixed fuel-air mixture, as a result of nonlinear interaction between the acoustic field and the combustion processes. The application of nonlinear time series analysis, particularly techniques based on phase space reconstruction from acquired pressure data, reveals rich dynamical behavior and the existence of several complex states. A route to chaos for thermoacoustic instability is established experimentally for the first time. We show that, as the location of the heat source is gradually varied, self-excited periodic thermoacoustic oscillations undergo transition to chaos via the Ruelle-Takens scenario.
ISSN:1089-7682
DOI:10.1063/1.4718725