Temperature, velocity and air entrainment of fire whirl plume: A comprehensive experimental investigation

2015 ◽  
Vol 162 (3) ◽  
pp. 745-758 ◽  
Author(s):  
Jiao Lei ◽  
Naian Liu ◽  
Linhe Zhang ◽  
Kohyu Satoh
Keyword(s):  
Experimental Investigation ◽  
Air Entrainment ◽  
Fire Whirl

An experimental investigation of the flame height and air entrainment of ring pool fire

Fuel ◽  
2018 ◽  
Vol 216 ◽  
pp. 734-737 ◽  
Author(s):  
Changfa Tao ◽  
Yongqiang Liu ◽  
Fei Tang ◽  
Qiang Wang
Keyword(s):  
Experimental Investigation ◽  
Air Entrainment ◽  
Pool Fire ◽  
Flame Height

scholarly journals Observation on a fire whirl in a vertical shaft using high-speed camera and associated correlation derived

2019 ◽  
pp. 266-266
Author(s):  
Hing Hung ◽  
Shousuo Han ◽  
Wan Chow ◽  
Cheuk Chow
Keyword(s):  
Burning Rate ◽  
High Speed ◽  
Tall Buildings ◽  
Burning Surface ◽  
Air Entrainment ◽  
Pool Fire ◽  
Flame Height ◽  
Vertical Shaft ◽  
High Speed Camera ◽  
Fire Whirl

The fire whirl generated by burning a pool fire in a vertical shaft with a single corner gap of appropriate width was studied using a high-speed camera. A 7-cm diameter pool propanol fire with heat release rate 1.6 kW in free space was burnt inside a 145-cm tall vertical shaft model with gap widths lying between 2 cm and 16 cm. The flame height was between 0.25 m and 0.85 m for different gap widths. Photographs taken using a high-speed camera at critical times of swirling motion development were used to compare with those taken using a normal camera. From the experimental observations on flame swirling by a high-speed camera, stages for generating the fire whirl were identified much more accurately. Two flame vortex tubes moving over the horizontal burning surface of the liquid pool were observed. Based on these observations a set of more detailed schematic diagrams on the swirling motion was constructed. From the observed flame heights under different gap widths and using three assumptions on the variation of air entrainment velocity with height, an empirical expression relating the burning rate with flame height and the corner gap width was derived from the observation with high-speed camera. The correlation expression of the burning rate of the pool fire obtained would be useful in fire safety design in vertical shafts of tall buildings.

A CFD Investigation on the Effect of the Air Entrainment in Breaking Wave Impacts on a Mono-Pile

2017 ◽  
Author(s):  
Pietro D. Tomaselli ◽  
Erik Damgaard Christensen
Keyword(s):  
Experimental Investigation ◽  
Circular Cylinder ◽  
Air Entrainment ◽  
Breaking Waves ◽  
Offshore Structures ◽  
Breaking Wave ◽  
Line Force ◽  
Entrainment Process ◽  
The Impact

In impacts of breaking waves on offshore structures, it is still not well-known how the air entrainment phenomenon affects the exerted loads. In this paper, a developed CFD solver capable of simulating the air entrainment process was employed to reproduce an experimental investigation on the impact of a spilling wave against a circular cylinder. The exerted in-line force was computed with and without the inclusion of dispersed bubbles. Results showed that the magnitude of the computed force was affected when the entrainment of bubbles was simulated.

Experimental investigation of air entrainment by vertical plunging liquid jet

2018 ◽  
Vol 181 ◽  
pp. 251-263 ◽  
Author(s):  
Shuichiro Miwa ◽  
Takahiro Moribe ◽  
Kohei Tsutstumi ◽  
Takashi Hibiki
Keyword(s):  
Experimental Investigation ◽  
Air Entrainment ◽  
Liquid Jet

Numerical and experimental investigation on surface air entrainment mechanisms of a novel long-short blades agitator

AIChE Journal ◽  
2017 ◽  
Vol 64 (1) ◽  
pp. 316-325 ◽  
Author(s):  
Yueqiao Zhang ◽  
Xiang Pan ◽  
Yaohua Wang ◽  
Peicheng Luo ◽  
Hua Wu
Keyword(s):  
Experimental Investigation ◽  
Air Entrainment
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