| 火旋风燃烧过程中负压场的探究 |
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| 引用本文： | 何海,武保林,江平. 火旋风燃烧过程中负压场的探究[J]. 消防科学与技术, 2021, 40(1): 29-32 |
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| 作者姓名： | 何海 武保林 江平 |
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| 作者单位： | 沈阳航空航天大学安全工程学院,辽宁沈阳110136 |
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| 摘 要： | 为了探究自然驱动的四面夹缝火旋风装置中,火旋风燃烧过程中油层表面形成的负压场,在一定简化的假设条件下,建立了火旋风燃烧过程中产生的负压场模型,对火旋风的涡核半径、涡核强度进行了计算.实验室形成的小型火旋风涡核半径与油盘尺寸成正相关.涡核强度与涡核半径的关系则可用指数函数表示;气动力机制是决定火旋风质量燃烧速率的主导机制...
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| 关 键 词： | 火旋风 负压场 涡核半径 涡核强度 负压抽吸 |
Study on negative pressure field in the process of fire whirl combustion |
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| HE Hai,WU Bao-lin,JIANG Ping. Study on negative pressure field in the process of fire whirl combustion[J]. Fire Science and Technology, 2021, 40(1): 29-32 |
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| Authors: | HE Hai WU Bao-lin JIANG Ping |
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| Affiliation: | Schoolof Safety Engineering, Shenyang Aerospace University, Liaoning Shenyang 110136,China |
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| Abstract: | Inorder to study the negative pressure field formed on the surface of the oildesk during the combustion of the fire whirl in the naturally driven four-sidedslit fire whirl device, under the condition of simplified hypothesis, thenegative pressure field model produced in the combustion process of firecyclone was established. The radius and strength of vortex core of fire whirlwindwere calculated. The radius of the small-scale vortex core formed in thelaboratory is positively correlated with the size of the oil pan. Therelationship between vortex core strength and vortex core radius can beexpressed by exponential function, and aerodynamic mechanism is the dominantmechanism to determine the mass combustion rate of fire cyclone. |
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| Keywords: | fire cyclone negative pressure field vortexcore radius vortex core strength negative pressure suction |
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