Combustion instabilities in lean premixed systems

Jacqueline Antonia O'Connor, S. Hemchandra, T. Lieuwen

    Research output: Chapter in Book/Report/Conference proceedingChapter

    4 Scopus citations

    Abstract

    Combustion instabilities are one of the most costly and technically challenging issues in lean, premixed combustion systems. While combustion instabilities, or thermacoustic oscillations more generally, have been noted in a variety of applications for several centuries, they are particularly problematic in lean, premixed combustion systems. Combustion instability is characterized by undesirably high acoustic and heat release rate oscillations inside a combustor chamber. In this chapter, we discuss the fundamentals of thermoacoustic feedback cycles, as well as the different coupling mechanisms by which combustor system acoustics create a feedback loop with flame heat release rate oscillations. Finally, an overview of combustion control strategies, particularly those employed in lean combustion systems, is discussed with references to future design and research directions.

    Original languageEnglish (US)
    Title of host publicationLean Combustion
    Subtitle of host publicationTechnology and Control: Second Edition
    PublisherElsevier Inc.
    Pages231-259
    Number of pages29
    ISBN (Print)9780128045572
    DOIs
    StatePublished - Jul 6 2016

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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  • Cite this

    O'Connor, J. A., Hemchandra, S., & Lieuwen, T. (2016). Combustion instabilities in lean premixed systems. In Lean Combustion: Technology and Control: Second Edition (pp. 231-259). Elsevier Inc.. https://doi.org/10.1016/B978-0-12-804557-2.00007-9