| 喷雾过程中液滴不稳定破碎的研究 |
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| 引用本文： | 蒋勇,范维澄,廖光煊,王清安.喷雾过程中液滴不稳定破碎的研究[J].火灾科学,2000,9(3):1-5. |
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| 作者姓名： | 蒋勇 范维澄 廖光煊 王清安 |
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| 作者单位： | 中国科学技术大学,火灾科学国家重点实验室,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金资助项目(59876038) |
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| 摘 要： | 建立喷雾过程数值计算模型，将喷注分为液核区与气液混合区，分别用Ｋ－Ｈ（Ｋｅｌｖｉｎ－Ｈｅｌｍｈｏｌｔｚ）和Ｒ－Ｔ（Ｒａｙｌｅｉｇｈ－Ｔａｙｌｏｒ）不稳定性理论来描述液滴的破碎过程，用不稳定性理论中的波长来表示破碎后的液滴半径，建立液滴破碎数学模型，并对一典型燃烧装置中的喷雾过程进行三维数值模拟，获得了液滴运动轨迹的三视图及典型截面上液体蒸汽浓度场等势线图。
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| 关 键 词： | 喷雾 数值模拟 液滴不稳定破碎 雾化 |
| 文章编号： | 1004-5309(2000)03-0001-05 |
| 收稿时间： | 1999/11/5 0:00:00 |
| 修稿时间： | 1999年11月5日 |
Study on Instability Breakup of Fluid Droplet in Spray Process |
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| JIANG Yong,FAN Wei-cheng,LIAO Guang-xuan and WANG Qing-an.Study on Instability Breakup of Fluid Droplet in Spray Process[J].Fire Safety Science,2000,9(3):1-5. |
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| Authors: | JIANG Yong FAN Wei-cheng LIAO Guang-xuan and WANG Qing-an |
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| Affiliation: | State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC;State Key Laboratory of Fire Science, USTC |
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| Abstract: | The numerical calculation models for fluid injection are established in the paper. The spray is divided into two regions: a main jet region and a mixing flow region,described by K\|H(Kelvin\|Helmgoltz) instability and R\|T(Rayleigh\|Taylor) instability respectively, the radius of droplets separated due to breakup are determined according to wavelength of instability, so the mathematical model of fluid droplet breakup is established. The process of spray in a typical combustion chamber is simulated. The 3D\|pictures of fluid droplets position and isoconcentration at some typical sections are shown. |
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| Keywords: | Spray Numerical simulation |
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