| 蒸汽射流压力振荡主频分析及强度特性 |
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| 引用本文： | 邱斌斌,赵全斌,赵伟月,严俊杰,刘继平. 蒸汽射流压力振荡主频分析及强度特性[J]. 化工学报, 2014, 65(Z1): 39-43. DOI: 10.3969/j.issn.0438-1157.2014.z1.007 |
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| 作者姓名： | 邱斌斌 赵全斌 赵伟月 严俊杰 刘继平 |
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| 作者单位： | 1. 西安交通大学动力工程多相流国家重点实验室, 陕西 西安 710049;2. 西安交通大学热流科学与工程教育部重点实验室, 陕西 西安 710049 |
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| 基金项目： | 国家自然科学基金项目（51176147，51125027）；新世纪优秀人才支持计划项目（NCET-12-0448）。 |
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| 摘 要： | 对蒸汽质量流率298~865 kg·m-2·s-1，水温20~70℃的蒸汽射流压力振荡特性进行了实验研究。发现压力振荡特殊主频与汽羽周期性鼓胀和收缩的频率一致。随着凝结形态由在凝结振荡区向稳定凝结区的转变，振荡频率随蒸汽质量流率的增加先增大后减小，振荡主频随冷却水温的升高而下降。振荡幅值的变化与频率变化相反。基于实验结果和分析，给出计算压力振荡量纲1方均根幅值的实验关联式，并在蒸汽质量流率370~865 kg·m-2·s-1，水温20~60℃的参数范围内与实验值对比，预测误差在±30%以内。
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| 关 键 词： | 蒸汽射流 压力振荡 频率 强度 |
| 收稿时间： | 2014-01-17 |
| 修稿时间： | 2014-01-27 |
Frequency analysis and amplitude characteristics of pressure oscillation for steam jet |
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| QIU Binbin,ZHAO Quanbin,ZHAO Weiyue,YAN Junjie,LIU Jiping. Frequency analysis and amplitude characteristics of pressure oscillation for steam jet[J]. Journal of Chemical Industry and Engineering(China), 2014, 65(Z1): 39-43. DOI: 10.3969/j.issn.0438-1157.2014.z1.007 |
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| Authors: | QIU Binbin ZHAO Quanbin ZHAO Weiyue YAN Junjie LIU Jiping |
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| Affiliation: | 1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;2. Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China |
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| Abstract: | Experimental investigation on pressure oscillation characteristics for steam jet have been performed in steam mass flux 298-865 kg·m-2·s-1, water temperature 20-70℃. The dominant frequency agreed with the periodic ballooning and contraction of steam plume. The dominant frequency first increased and then decreased with the increasing water temperature for the condensation region transforming from condensation oscillation region to stable condensation region. The dominant frequency decreased with the increasing water temperature. The variation of dominant frequency was opposite to that of amplitude. Based on the experimental data and analysis, a correlation was given to predict the dimensionless root mean square amplitude. The prediction error was within ±30% in steam mass flux 370-865 kg·m-2·s-1, water temperature 20-60℃. |
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| Keywords: | steam jet pressure oscillation frequency amplitude |
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