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Title: Chaos in an imperfectly premixed model combustor

This article reports nonlinear bifurcations observed in a laboratory scale, turbulent combustor operating under imperfectly premixed mode with global equivalence ratio as the control parameter. The results indicate that the dynamics of thermoacoustic instability correspond to quasi-periodic bifurcation to low-dimensional, deterministic chaos, a route that is common to a variety of dissipative nonlinear systems. The results support the recent identification of bifurcation scenarios in a laminar premixed flame combustor (Kabiraj et al., Chaos: Interdiscip. J. Nonlinear Sci. 22, 023129 (2012)) and extend the observation to a practically relevant combustor configuration.
Authors:
; ;  [1] ;  [2] ;  [3] ; ;  [4]
  1. Hermann Föttinger Institut, Technische Universität Berlin (Germany)
  2. School of Engineering, University of Glasgow (United Kingdom)
  3. University of Wisconsin-Madison, Madison 53706 (United States)
  4. Department of Engineering, University of Cambridge (United Kingdom)
Publication Date:
OSTI Identifier:
22402530
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chaos (Woodbury, N. Y.); Journal Volume: 25; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING; BIFURCATION; CHAOS THEORY; CONFIGURATION; CONTROL; DETERMINISTIC ESTIMATION; FLAMES; INSTABILITY; NONLINEAR PROBLEMS; PERIODICITY