蒸汽射流压力振荡主频分析及强度特性

doi:10.3969/j.issn.0438-1157.2014.z1.007

化工学报 ›› 2014, Vol. 65 ›› Issue (S1): 39-43.DOI: 10.3969/j.issn.0438-1157.2014.z1.007

蒸汽射流压力振荡主频分析及强度特性

邱斌斌¹, 赵全斌¹, 赵伟月¹, 严俊杰¹, 刘继平²

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

收稿日期:2014-01-17 修回日期:2014-01-27 出版日期:2014-05-30 发布日期:2014-05-30
通讯作者: 刘继平
基金资助:
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）。

Frequency analysis and amplitude characteristics of pressure oscillation for steam jet

QIU Binbin¹, ZHAO Quanbin¹, ZHAO Weiyue¹, YAN Junjie¹, LIU Jiping²

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

Received:2014-01-17 Revised:2014-01-27 Online:2014-05-30 Published:2014-05-30
Supported by:
supported by the National Natural Science Foundation of China (51176147,51125027) and the New Century Excellent Talents Support Plan (NCET-12-0448).

摘要/Abstract

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。

关键词: 蒸汽射流, 压力振荡, 频率, 强度

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℃.

Key words: steam jet, pressure oscillation, frequency, amplitude

中图分类号:

TL334

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(S1): 39-43.

QIU Binbin, ZHAO Quanbin, ZHAO Weiyue, YAN Junjie, LIU Jiping. Frequency analysis and amplitude characteristics of pressure oscillation for steam jet[J]. CIESC Journal, 2014, 65(S1): 39-43.

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蒸汽射流压力振荡主频分析及强度特性

Frequency analysis and amplitude characteristics of pressure oscillation for steam jet

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