期刊
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
卷 44, 期 -, 页码 53-61出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jlp.2016.08.016
关键词
Flammable gas; Propane explosion; Vented tube; Explosion overpressure; Flame front velocity
资金
- Australian Coal Association and Low Emissions Technologies Ltd [G1400523]
- Australian Department of Industry
- University of Newcastle, Australia [G1201029]
This article presents a numerical study of the explosive wave propagations from a 40 cm long and 10.8 cm diameter cylinder to smaller 1.7 m and 2.6 m long cylinders with 36 mm diameters. Initially, the 40 cm long cylinder was filled with 4% propane-air mixtures and ignited with a 1 kJ sparking energy until the maximum temperature near the ignition source reached 2400/3000 K. In the study, a 3D numerical model was established by combining compressible four-step reduced propane oxidation reaction kinetics with the k-omega shear-stress transport (SST) turbulent model. In order to resolve the thin detonation wave front, a dynamically refined mesh near the high pressure gradient was adopted. The pressure gradient profiles, velocity magnitude contours, temperature contours and compressible wave propagation speeds across the tubes were then predicted using this 3D model. (C) 2016 Elsevier Ltd. All rights reserved.
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