Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Sarli, Valeria Di; Benedetto, Almerinda Di; Russo, G.; Jarvis, S.; Long, Edward J.; Hargrave, Graham K.

doi:10.1007/s10494-008-9198-3

Cited by 98 publications

(64 citation statements)

References 50 publications

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“…However, the practical use of hydrogen-methane blends is yet limited. This is due to a lack in the knowledge about the mechanisms of dynamic interaction between hydrogen-enriched flames and turbulent flow fields [12], which control premixed flame propagation in combustors, industrial burners and engines [see, e.g., [13][14][15][16][17] as well as in gas explosions [see, e.g., 18,19].…”

Section: Introductionmentioning

confidence: 99%

Time-Resolved Particle Image Velocimetry of dynamic interactions between hydrogen-enriched methane/air premixed flames and toroidal vortex structures

Sarli

Benedetto

Long

et al. 2012

International Journal of Hydrogen Energy

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124

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Additional Information:• NOTICE: this is the author's version of a work that was accepted for publication in the International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was sub- Regardless of the mixture stoichiometry, the hydrogen substitution to methane leads to a transition from a regime in which the vortex only wrinkles the flame front (x H2 < 0.2) to a * Corresponding author. Phone: +39 0817622673; Fax: +39 0817622915; E-mail address: valeria.disarli@irc.cnr.it 3 more vigorous regime in which the interaction almost results in the separation of small flame pockets from the main front (x H2 > 0.2). This transition was characterised in terms of time histories of flame surface area and burning rate.

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Section: Introductionmentioning

confidence: 99%

Time-Resolved Particle Image Velocimetry of dynamic interactions between hydrogen-enriched methane/air premixed flames and toroidal vortex structures

Sarli

Benedetto

Long

et al. 2012

International Journal of Hydrogen Energy

Self Cite

124

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“…Recently, Di Sarli and co workers [13,14] demonstrated the importance of FSD based SGS model [1] to predict explosions in a vented chamber using LES. SGS modelling approaches that are seen as alternatives to flamelets include the filtered density functions (FDF) [15], the conditional moment closure [16] and the linear eddy model (LEM) [17].…”

Section: Introductionmentioning

confidence: 99%

Measurements and LES calculations of turbulent premixed flame propagation past repeated obstacles

Gubba

Ibrahim

Malalasekera

et al. 2011

Combustion and Flame

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“…Rate of increase of pressure is defined by the speed of explosive combustion. Many experimental works [7][8][9][10][11] and works in which this process numerically is modelled [12][13][14][15][16] are devoted to studying of this question. At explosion in closed volume terminal pressure of explosion is defined by a share of the burned-down substance.…”

Section: Methodsmentioning

confidence: 99%

Ensuring explosion safety of residential buildings

Gorev

2018

MATEC Web Conf.

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Abstract. Explosions of air -and-gas mixtures in residential buildingsincident dangerous and recently extended. Unlike the production explosive buildings residential buildings are not protected by express requirements. In this work the possibility of protection of these buildings by means of a depressurization through the coming-off apertures is analyzed. These apertures can be closed by windows or express light-weight constructions. In work it is shown that fastenings of these designs in an aperture considerably are reduced by effectiveness of opening of apertures as the incipient state of driving of protective designs does not open space for venting of gases. Explosion pressure at the same time grows as in closed volume and until opening can reach critical value and cause destruction of the protecting and load-bearing frames. By the time of opening of an aperture for venting of gases the Safety design already has sufficient speed, and discovery of the area in that case happens quickly and pressure increases slightly. The main pressure boost happens before destruction of fastening of mild designs and at their driving in an aperture when volume can be considered pressure-tight. Calculations show: that designs with the specific surface density р30 kg/m2 and depth of seal of 0,2 m do not provide protection of residential buildings. The modern windows to double-glazed windows and their fastening are close to these conditions.

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Large Eddy Simulation and PIV Measurements of Unsteady Premixed Flames Accelerated by Obstacles

Cited by 98 publications

References 50 publications

Time-Resolved Particle Image Velocimetry of dynamic interactions between hydrogen-enriched methane/air premixed flames and toroidal vortex structures

Time-Resolved Particle Image Velocimetry of dynamic interactions between hydrogen-enriched methane/air premixed flames and toroidal vortex structures

Measurements and LES calculations of turbulent premixed flame propagation past repeated obstacles

Ensuring explosion safety of residential buildings

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