Flame dominated thermoacoustic instabilities in a system with high acoustic losses

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Abstract

The thermoacoustic stability behaviour of a flame is experimentally investigated in the presence of large acoustic losses. Recently it has become clear that under such conditions an instability can occur due to an intrinsic local feedbackloop at the heat source. The experimental results confirm that despite significant acoustic losses, thermoacoustic instabilities can still be present. These findings imply that the effectiveness of passive thermoacoustic damping devices is limited by the intrinsic stability properties of the flame.
Original languageEnglish
Pages (from-to)209-215
JournalCombustion and Flame
Volume169
DOIs
Publication statusPublished - 2016

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