| 喷雾重叠率对带钢冷却效果的影响 |
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| 作者姓名： | 王炯 邹光明 王兴东 汪朝晖 孔建益 |
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| 作者单位： | 武汉科技大学;武汉科技大学冶金装备及其控制教育部重点实验室;武汉科技大学机械传动与制造工程湖北省重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51405352)；武汉科技大学冶金装备及其控制教育部重点实验室开放基金资助项目(2013A01). |
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| 摘 要： | 本文建立了双喷嘴气雾冷却系统的物理和数学模型,在固定单个喷嘴流量、压力、雾化角和喷嘴喷射距离的条件下,利用FLUENT软件对喷雾重叠率分别为0、25%、50%和75%时,雾化场中液滴分布、液滴速度以及带钢表面温度分布、带钢冷却速度进行仿真计算。数值模拟结果表明,当喷雾重叠率为25%时,雾化场内液滴的位置分布、带钢表面液滴的速度分布以及带钢表面的温度分布最为均匀,带钢冷却效果最佳;但与其他喷雾系统的特性参数相比,喷雾重叠率对带钢的冷却速度影响不大。
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| 关 键 词： | 带钢 气雾冷却 喷雾重叠率 液滴分布 温度分布 冷却速度 数值模拟 |
| 收稿时间： | 2019/1/12 0:00:00 |
Influence of spray overlap ratio on the cooling effect of strip steel |
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| Authors: | Wang Jiong Zou Guangming Wang Xingdong Wang Zhaohui and Kong Jianyi |
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| Institution: | 1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China,1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China,1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China,1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China and 1. Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | In this papar, the physical and mathematical models of double-nozzle spray cooling system were established. Under the conditions of fixed single nozzle flow, inlet pressure, atomization angle and nozzle spray distance, the droplet distribution in the atomization field, droplet velocity, temperature distribution on the surface of strip as well as the cooling rate of strip at the spray overlap ratio of 0,5%, 50% and 75%, respectively, were simulated and calculated by using FLUENT software. The numerical simulation results show that when the spray overlap ratio is 25%, the position distribution of droplets in the atomization field, the velocity distribution of droplets as well as the temperature distribution on the surface of strip turn out to be the most uniform, along with the optimal cooling effect of the strip steel. Nevertheless, the spray overlap ratio has slight influence on the cooling rate of strip compared with other factors. |
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| Keywords: | strip steel spray cooling spray overlap ratio droplet distribution temperature distribution cooling rate numerical simulation |
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