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- W2348468583 abstract "The present paper is aimed to introduce the likely causes leading to the explosion of the two-phase system, which has become a keen interest in the recent years. For our research purpose, we have prepared a self-made large horizontal combustion tube with the inside diameter of 199 mm and the length of 29.6 m. One end of the said tube was closed with the other end connected to a large dump-tank. In our research, the forty special dust dispersion system has been used to disperse the bituminous coal dust into the experimental tube. While a uniform suspension of bituminous coal dust was produced in the tube with a diameter ranging from 46 μm to 70 μm, we carried out an experimental research on the entire propagation process of deflagration waves in two-phase, suspended bituminous coal powder-air flow in the above-mentioned apparatus, with the bituminous coal dust-air mixture initiated under the weak ignition condition of 40 J electric spark. Furthermore, it is possible to develop considerable pressure along the tube with the coal dust concentration of 300 g/m~3 monitored by piezoelectric transducers. At this moment, we can find out stable deflagration waves in the coal dust-air mixture and the propagation mechanism for the stable heterogeneous dust deflagrations in air. The experimental results show that the stable propagation of the self-sustained deflagration wave can be done through the suspended bituminous coal dust clouds under the weak ignition condition with the propagation distance of the stable deflagration observed beyond 20 m. However, while the self-sustained deflagration wave propagated regularly, the mean peak overpressure and mean propagation velocity along the combustion tube tend to reach approximately 70 kPa and 430 m/s, respectively." @default.
- W2348468583 created "2016-06-24" @default.
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- W2348468583 date "2009-01-01" @default.
- W2348468583 modified "2023-09-23" @default.
- W2348468583 title "Experimental investigation of propagation parameters through bituminous coal powder clouds in a combustion tube" @default.
- W2348468583 hasPublicationYear "2009" @default.
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