A finite element method for a weakly nonlinear dynamic analysis and bifurcation tracking of thermo-acoustic instability in longitudinal and annular combustors

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• 作者：D. Laera^a ; ^{davide.laera@poliba.it} ; G. Campa^b ; S.M. Camporeale^a
• 关键词：Thermo-acoustic instabilities ; Helmholtz solver ; Longitudinal combustor ; Annular combustor ; Limit cycles ; Bifurcation diagrams
• 刊名：Applied Energy
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：187
• 期：Complete
• 页码：216-227
• 全文大小：2974 K
• 卷排序：187

文摘

Weakly nonlinear approach in a Helmholtz solver framework. Single and multiple burners combustion systems are examined. Influence of geometry, damping effects and flame characteristics are examined. Bifurcation diagrams, supercritical and subcritical, are investigated and discussed. The spinning mode, observed at the limit cycle in annular combustor is discussed.