Experimental study of the horizontal subsurface flow trajectory and dynamic external radiation of flame spread over diesel

Chen Wang, Haowei Hu, Hao Zhang, Jie Ji and Zhigang Wang

Energy, 2022, vol. 260, issue C

Abstract: In the process of production, transportation and storage of liquid fuel, accidental leaked liquid fuel could cause the flame spread, which may eventually lead to a serious fire accident. Therefore, it is imperative to study the characteristics of flame spread. Experiments of flame spread was conducted with eight-size pools whose width ranges from 4 to 25 cm. Results indicated that with pool width increasing, the time difference between the subsurface flow passing the pool centerline and the pool sidewall firstly decreases and then keeps constant. Sidewall viscous force and liquid surface tension exit a competitive relationship to affect the subsurface flow. As pool width increases, the changeable dominant areas of sidewall viscous force and liquid surface tension can control horizontal subsurface flow trajectory. In addition, the whole spreading flame shape is assumed as n radiation points. External radiations of the flame that crosses and does not cross the center point of pool long side are calculated after or before some time. The aspect ratio of the small flame is found to be gradually reduced to thicken the density of point sources with the flame spread development. Finally, a dynamic external radiation model of flame spread is established at different moments.

Keywords: Flame spread; Diesel fuel; Subsurface flow trajectory; Dynamic external radiation (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:260:y:2022:i:c:s0360544222019739

DOI: 10.1016/j.energy.2022.125078

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