التفاصيل البيبلوغرافية
| العنوان: |
The Flame Propagation Process and Thermal Radiation Characteristics of MgH2 Dust. (English) |
| المؤلفون: |
ZHANG Yun, JlA Yue, YANG Zhen-xin, ZHAO Yi-ming, ZHAO Feng-qi, PEl Qing, XU Si-yu, JIAO Feng-yuan, WU Xing-Sang, XU Sen, CAO Wei-guo |
| المصدر: |
Chinese Journal of Explosives & Propellants; 2023, Vol. 46 Issue 2, p157-162, 6p |
| مصطلحات موضوعية: |
DUST explosions, FLAME, DUST |
| مستخلص: |
The Improved Hattmann tube devce was used for ignitbn expetimenrs to invesfigate the fame propagation process and thermal rad'ation charactetistics of MgH2 dust explosion. A high-speed camera, thermal radiometers, and the infrared he--mal imager synchronous conrrol system were used to record the lame propagation, heat radiation lux change, and temperature change process of MgH2 dust, respectiveiy. The resulrs show that after Ignition, the MgH2 fame continues to expand to form a continuous combustion area and when it reaches the maximum, it begins to decay, and a discrete fame appears. When the mass concenrration is 150-1 000 g/m3, the maximum propagation hegght and the maximum propagation veiocity of the fame front reach 1 138 mm and 45 m/s, respectiveiy, at 750 g/m3. in addition, the maximum heat rad'ation lux of No. 3 above the fireball reaches 31. 7kW/m2, which is much higher than those of No. 1 and No. 2 on both tides. The temperature is highest in he fame center and gradually decreases around it. The highstemperature zone is concenrrated in he upper past of he fame. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
