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Journal of Applied Fluid Mechanics، جلد ۱۸، شماره ۷، صفحات ۱۸۲۳-۱۸۳۲
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عنوان انگلیسی Experimental Study on the Effect of the Spray Time on the Deflagration Characteristics of Oil Mist in a Closed Chamber
چکیده انگلیسی مقاله The deflagration of oil mist in closed chambers often causes severe ship fire accidents. Based on a self-built visual oil mist deflagration experiment platform, this research analyzed the effect of the spray time on the oil mist deflagration characteristics and focused on the flame propagation process, velocity, gas temperature, and overpressure in a closed chamber. The results show that with increasing spray time, the flame propagation velocity, gas temperature and deflagration overpressure increased. However, with the continuous increase in spray time, the deflagration characteristics of oil mist decreased. When the spray continued for 35 s, the peak overpressure was measured to be approximately 1.655 MPa. When the spray time extended to 95 s, the peak overpressure decreased by approximately 31.2% relative to the value at 35 s because the increase in spray time contributed to a more stable spray state and a larger diffusion range. Concurrently, the evaporation of liquid droplets increased of the kerosene vapor content. These factors contribute to a more intense oil mist deflagration. However, continuous increase in spray time results in an excessive accumulation of fuel, which makes an insufficient reaction and a significant reduction in deflagration characteristics. Oil mist deflagration process can be divided into four stages: deflagration, turbulent combustion, stretching and self-extinguishing. The high-temperature and high-pressure range of oil mist deflagration concentrate near the deflagration center, approximately 100 cm from left wall of the chamber. 
کلیدواژه‌های انگلیسی مقاله Spray time,Closed chamber,Deflagration,Oil mist,Overpressure
نویسندگان مقاله N. Zhou |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

Y. Zhang |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

B. Chen |
Institute of Industrial Safety, China Academy of Safety Production Research, Beijing 100012, China

B. Chen |
Institute of Industrial Safety, China Academy of Safety Production Research, Beijing 100012, China

Y. Wang |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

Z. Shi |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

M. Sun |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

C. Yang |
School of Materials Engineering, Changshu Institute of Technology, Suzhou, 215500, China

X. Liu |
Tianjin Fire Research Institute of MEM, Tianjin 300381, China

W. Huang |
School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou 213164, China

نشانی اینترنتی https://www.jafmonline.net/article_2675_03bc92cec3518b6d0b83ad868c360a81.pdf
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