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Effect of ventilation air velocities on diesel particulate matter dispersion in underground coal mines | ||
International Journal of Mining and Geo-Engineering | ||
مقاله 3، دوره 53، شماره 2، اسفند 2019، صفحه 117-121 اصل مقاله (592.14 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/ijmge.2019.264023.594755 | ||
نویسندگان | ||
Ramakrishna Morla* 1؛ Shivakumar Karekal2؛ Ajit Godbole2؛ Ram Madhab Bhattacharjee3؛ Balasubrahmanyam Nasina4؛ Satyanarayana Inumula4 | ||
15/160, Michael Street | ||
2University of Wollongong, Australia | ||
3IIT Dhanbad, India | ||
4Directorate General of Mine Safety (DGMS), India | ||
چکیده | ||
This paper presents a detailed account of computational fluid dynamics (CFD) simulations undertaken to investigate the influence of intake (ventilation) air velocities on the flow patterns of diesel particulate matter (DPM) generated by a man-riding vehicle operating in a straight rectangular cross section tunnel in an underground coal mine. The simulation results are validated against an earlier experimental study. At a sampling station 10 m downstream of the vehicle, the DPM concentration was seen to decrease rapidly with increasing intake air velocity. For air velocities of 0.5 m/s, 1 m/s, 2 m/s and 3 m/s, the DPM concentration was estimated to be 233 µg/m3, 131 µg/m3, 116 µg/m3 and 1 µg/m3 respectively. At 10 m downstream of the vehicle, if the intake air velocity is reduced from a base value of 1.26 m/s by 40% and 60% of the base value, the average DPM concentration increased to 58% and 123% respectively. If the intake air velocity is increased by 58% and 98% of the base case value, the average DPM concentration decreased to 44% and 78% respectively. | ||
کلیدواژهها | ||
Coal mines؛ DPM؛ Air velocity؛ CFD؛ Man-riding vehicle | ||
آمار تعداد مشاهده مقاله: 615 تعداد دریافت فایل اصل مقاله: 596 |