| 人工扰流条件下喷射火焰的倾角计算 |
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| 引用本文： | 蒋晓刚,金良安,迟卫,罗育洪,徐上,曾广万.人工扰流条件下喷射火焰的倾角计算[J].消防科学与技术,2011,30(11):987-990. |
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| 作者姓名： | 蒋晓刚 金良安 迟卫 罗育洪 徐上 曾广万 |
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| 作者单位： | 1. 海军大连舰艇学院,辽宁大连,116018
2. 海军91257部队,浙江舟山,316000 |
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| 摘 要： | 综合考虑喷口直径及射流夹角等因素的影响,利用Thornton模型和相交射流理论推导得出人工扰流条件下的喷射火焰倾角计算公式。通过专门设计的实验装置对人工扰流条件下的丁烷射流燃烧形成的火焰倾角进行实例分析,考察火焰倾角特性及相关影响因素,探讨空气扰流速度变化对火焰倾角的影响,并对公式进行初步验证。结果表明:理论计算结果与实验结果规律吻合;火焰倾角与人工扰流速度以及两射流夹角成正比;同一人工扰流速度下,火焰倾角随着燃气射流速度的增加而减小。
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| 关 键 词： | 喷射火 火焰倾角 人工扰流 Thornton模型 相交射流 |
Calculative method for oblique angle of ejecting flame interfered by man-made jet flow |
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| JIANG Xiao-gang,JIN Liang-an,CHI Wei,LUO Yu-hong,XU Shang,Zeng Guang-wan.Calculative method for oblique angle of ejecting flame interfered by man-made jet flow[J].Fire Science and Technology,2011,30(11):987-990. |
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| Authors: | JIANG Xiao-gang JIN Liang-an CHI Wei LUO Yu-hong XU Shang Zeng Guang-wan |
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| Affiliation: | JIANG Xiao-gang1,JIN Liang-an1,CHI Wei1,LUO Yu-hong2,XU Shang1,Zeng Guang-wan1 (1.Dalian Naval Academy,Liaoning Dalian 116018,China,2.Unit 91257 of Navy,Zhejiang Zhoushan 316000,China) |
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| Abstract: | Considering factors such as the jet diameter and jet an gle,and based on the theory of intersectant jet flows and Thornton model,a new method of calculating oblique angle of ejecting flame interfered by man-made jet flow was put forward.Experiment was designed to validate the formula.Both the characteristics of oblique angle and the influence of man-made jet flow velocity were studied.The results showed that the calculation results agree with the experiments;the oblique angle of ejecting flame is proportion... |
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| Keywords: | jet fire oblique angle of flame man-made interferential jet flow Thornton model intersectant jet flows |
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