Abstract
Analysis of thermoacoustic instabilities were dominated by modal (eigenvalue) analysis for many decades. Recent progress in nonmodal stability analysis allows us to study the problem from a different perspective, by quantitatively describing the short-term behavior of disturbances. The short-term evolution has a bearing on subcritical transition to instability, known popularly as triggering instability in thermoacoustic parlance. We provide a review of the recent developments in the context of triggering instability. A tutorial for nonmodal stability analysis is provided. The applicability of the tools from nonmodal stability analysis are demonstrated with the help of a simple model of a Rjike tube. The article closes with a brief description of how to characterize bifurcations in thermoacoustic systems.
Original language | English (US) |
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Pages (from-to) | 119-146 |
Number of pages | 28 |
Journal | International Journal of Spray and Combustion Dynamics |
Volume | 8 |
Issue number | 2 |
DOIs | |
State | Published - Jun 1 2016 |
Externally published | Yes |
ASJC Scopus subject areas
- Automotive Engineering
- General Physics and Astronomy