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Fire Technology

Erschienen in:

01.03.2016

Pulsation Behavior of Pool Fires in a Confined Compartment with a Horizontal Opening

verfasst von: Xiao Chen, Shouxiang Lu, Xiaomin Wang, Kim Meow Liew, Changhai Li, Jiaqing Zhang

Erschienen in: Fire Technology | Ausgabe 2/2016

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Abstract

This study reveals the flame pulsation behavior of pool fires in a confined compartment with a horizontal opening. A series of tests were carried out in a small-scale compartment with a central horizontal opening to obtain parameters, such as the mass loss rate (MLR), oxygen concentration, flame height, flame pulsation frequency. Results showed that the average MLR in the steady burning period varied with the opening size, whereas the oxygen concentration value at extinction remained constant for larger horizontal opening size. The mean flame height as obtained by image processing was compared with the predicted correlation for different horizontal openings. The flame pulsation frequency was obtained by performing a fast Fourier transform on the flame height. The influences of the pool fire diameter and horizontal opening size on the flame pulsation frequency were considered. The empirical correlation with exponent of −0.5 between the pulsation frequency and diameter was verified for confined compartments, as well as the effect of the horizontal opening size on the flame pulsation frequency. In addition, the flame pulsation frequency could be characterized by a scaling relationship between the Strouhal number and Froude number.

Vorheriger Artikel Doorway Flows Induced by the Combined Effects of Natural and Forced Ventilation in Case of Multi-compartments Large-Scale Fire Experiments

Nächster Artikel Ignition and Flame Propagation of Externally Heated Electrical Wires with Electric Currents

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Titel: Pulsation Behavior of Pool Fires in a Confined Compartment with a Horizontal Opening
verfasst von: Xiao Chen
Shouxiang Lu
Xiaomin Wang
Kim Meow Liew
Changhai Li
Jiaqing Zhang
Publikationsdatum: 01.03.2016
Verlag: Springer US
Erschienen in: Fire Technology / Ausgabe 2/2016
Print ISSN: 0015-2684
Elektronische ISSN: 1572-8099
DOI: https://doi.org/10.1007/s10694-015-0484-z

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