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ACOUSTIC SCATTERING BEHAVIOR OF A 2D FLAME WITH HEAT EXCHANGER IN CROSS-FLOW
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2016 (Engelska)Ingår i: ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics, International Institute of Acoustics and Vibrations , 2016Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

In practical heat production systems, premixed flames with cold heat exchanger in cross-flow is a widely used configuration. Self-excited thermoacoustic instabilities often occur in such systems. A practical way to predict the presence of the instabilities is the network model approach. In the present study, the configuration flame - heat exchanger is analyzed numerically. We first analyze the system as a network of segregated elements. Based on the resulting acoustic scattering matrix, the role of the heat exchanger as an amplifier of the flame resonant frequencies will be discussed. Then, results from the 1D network modeling are compared to results of compressible numerical simulations, performed for several distances between flame and heat exchanger. Finally, the limits to the validity of the segregated network model approach are discussed.

Ort, förlag, år, upplaga, sidor
International Institute of Acoustics and Vibrations , 2016.
Serie
Proceedings of the International Congress on Sound and Vibration, ISSN 2329-3675
Nationell ämneskategori
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Identifikatorer
URN: urn:nbn:se:kth:diva-203202ISI: 000388480402077Scopus ID: 2-s2.0-84987909227ISBN: 978-960-99226-2-3 (tryckt)OAI: oai:DiVA.org:kth-203202DiVA, id: diva2:1081275
Konferens
23rd International Congress on Sound and Vibration (ICSV), JUL 10-14, 2016, Athens, GREECE
Anmärkning

QC 20170313

Tillgänglig från: 2017-03-13 Skapad: 2017-03-13 Senast uppdaterad: 2019-05-13Bibliografiskt granskad

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Arteaga, Ines Lopez
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