The study will involve detailed experimental characterisation of an annular hydrogen flame and the sound it generates. The goal will be to understand and modelling the flow/flame dynamics and related sound-generation mechanisms. High-precision, spatiotemporally resolved, optical diagnostics will be used to explore and characterise the flame. Microphone arrays will be used to map the sound field. Synchronisation of the measurement systems will permit causal relationships to be established between the sound, flow and combustion dynamics. Data-reduction techniques will be implemented to identify key mechanisms and to guide the development of simplified models for the combustion and sound-generation processes.
