Premixed-flame oscillations in narrow channels

Martínez Ruiz, Daniel; Veiga López, Fernando; Sánchez Sanz, Mario

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Premixed-flame oscillations in narrow channels

Author(s): Martínez Ruiz, Daniel; Veiga López, Fernando; Sánchez Sanz, Mario

Publisher: American Physical Society (APS)

Issued date: 2019-10-24

Citation: Physical review fluids, 4 (10), 100503, 3 pp.

ISSN: 2469-990X

DOI: https://doi.org/10.1103/PhysRevFluids.4.100503

xmlui.dri2xhtml.METS-1.0.item-contributor-funder: Ministerio de Economía y Competitividad (España)

Sponsor: The authors acknowledge financial support from the Spanish Ministry of Economy and Competitiveness under project ENE2015-65852-C2-1-R (MINECO/FEDER, UE).

Is part of: https://doi.org/10.1103/APS.DFD.2018.GFM.V0018

Project: Gobierno de España. ENE2015-65852-C2-1-R

Keywords: Premixed flames , Oscillatory motion , Narrow channels

URI: http://hdl.handle.net/10016/30388

Rights: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license
Atribución 3.0 España

Abstract:

This paper is associated with a video winner of a 2018 APS/DFD Milton van Dyke Award for work presented at the DFD Gallery of Fluid Motion. [+]

Description:

The original video is available online at the Gallery of Fluid Motion, https://doi.org/10.1103/APS.DFD.2018.GFM.V0018

Resumen del vídeo: Propagation of premixed flames in closed vessels is a problem of great importance in science and technological applications. The interaction of the acoustic waves with the reacting front is found widely in power-generation devices, which can compromise their structural integrity. A Hele Shaw cell, of very small thickness, has been used to study the transition of the thermoacoustic oscillations and its dependence on the fuel mixture properties. Two regimes are identified for different values above and below a critical equivalence ratio, which develop strong pulses of the advancing flame and weak oscillations respectively.

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