Stabilization Of Thermoacoustic System Through Multipartitioned Burner Design With Its Corresponding FlameShow others and affiliations
2024 (English)In: Proceedings of the 30th International Congress on Sound and Vibration, ICSV 2024, Society of Acoustics , 2024Conference paper, Published paper (Refereed)
Abstract [en]
Thermoacoustic instability within combustion systems is heavily influenced by the thermoacoustic characteristics of the burner in conjunction with its flame. A promising strategy to mitigate these instabilities involves targeting the thermoacoustic properties of the burner itself. One innovative approach for modifying or designing the burner with its corresponding flame is grounded in the heuristic notion that the acoustic response of one flame (with burner) can be counterbalanced by the appropriately tuned response of other flames. In the case of premixed gaseous multiple Bunsen-type flames anchored to the burner deck with perforations, this concept suggests the integration of various sizes and shapes of perforations in burners. However, without prior knowledge, this approach often necessitates extensive trial and error, leading to excessive costs in the Research and Development (R&D) process. Achieving a burner design and its corresponding flame that operate thermo-acoustically stable within the combustion system, while also meeting additional requirements such as emissions, operational durability, mechanical resilience, modulation rate, and others, poses a significant challenge. In this study, we initially articulate the concept of the burner transfer matrix (TM) composition to allows us to predict the TM of complex composite burners on basis of TM of its constituting parts. Then, we establish the complete framework of burner-flame TM composition based on a tabulated library of elemental burners’ pressure drop (PD), elemental burners TM, and elemental flame Transfer Functions (TF). To illustrate this design methodology, we analyze a duct-flame-duct case study. Finally, we present a stability chart that delineates thermo-acoustically safe and unsafe combinations of segments/partitions, offering valuable insights into the R&D process of burner development. By leveraging such a stability chart and considering other operational constraints, designers can systematically achieve optimized designs.
Place, publisher, year, edition, pages
Society of Acoustics , 2024.
Keywords [en]
Composite burner design, Thermoacoustic instability, Transfer matrix composition
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-354661Scopus ID: 2-s2.0-85205391785OAI: oai:DiVA.org:kth-354661DiVA, id: diva2:1904557
Conference
30th International Congress on Sound and Vibration, ICSV 2024, Amsterdam, Netherlands, Kingdom of the, Jul 8 2024 - Jul 11 2024
Note
Part of ISBN 9789090390581]
QC 20241010
2024-10-092024-10-092024-10-10Bibliographically approved