期刊
FUEL
卷 185, 期 -, 页码 565-576出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2016.07.126
关键词
Methane-air; Deflagration; Overpressure; Impulse; Methane concentration; Gas volume
资金
- National Basic Research Program of China (973 Program) [2015CB058001]
- National Natural Science Foundation of China [51321064, 51210012, 51408608]
- Natural Science Foundation of Jiangsu Province of China [BK20140067]
9 batches of unconfined methane-air deflagration tests were conducted to investigate the influential factors on the deflagration load. The methane-air mixture was filled in the cubic tents with different volumes of 1 m(3), 8 m(3) and 27 m(3). Methane concentrations varied from 7.5% to 11.5%, covering both lean and rich combustion regimes. The ground overpressure was recorded by using the piezoresistive sensors. An ideal film was validated before the tests. The effects of the methane concentration and gas volume on the deflagration load were analyzed. Based on the results, a new prediction model for the unconfined methane-air deflagration load was proposed. In addition, the model was compared with some existing models. (C) 2016 Elsevier Ltd. All rights reserved.
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