|本期目录/Table of Contents|

[1]朱学良,宋泽阳,潘旭海,等.过热液体储罐泄漏闪蒸射流形态演变特征[J].南京工业大学学报(自然科学版),2019,41(05):577-585.[doi:10.3969/j.issn.1671-7627.2019.05.007]
 ZHU Xueliang,SONG Zeyang,PAN Xuhai,et al.Morphological characteristics of flashing jets released from superheated liquid tank[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(05):577-585.[doi:10.3969/j.issn.1671-7627.2019.05.007]
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过热液体储罐泄漏闪蒸射流形态演变特征()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年05期
页码:
577-585
栏目:
出版日期:
2019-10-22

文章信息/Info

Title:
Morphological characteristics of flashing jets released from superheated liquid tank
文章编号:
1671-7627(2019)05-0577-09
作者:
朱学良1宋泽阳12潘旭海12梅宇1王希霖1朱峪铖1蒋军成12
1.南京工业大学 安全科学与工程学院,江苏 南京 211800; 2.南京工业大学 江苏省危险化学品本质安全与控制技术重点实验室,江苏 南京 211800
Author(s):
ZHU Xueliang1SONG Zeyang12 PAN Xuhai12 MEI Yu1 WANG Xilin1 ZHU Yucheng1 JIANG Juncheng12
1. College of Safety Science and Engineering, Nanjing Tech University, Nanjing 211800, China; 2. Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control, Nanjing Tech University, Nanjing 211800, China
关键词:
过热液体 两相泄漏 闪蒸射流 射流形态 喷射角
Keywords:
superheated liquid two-phase release flashing jet jet morphology spray angle
分类号:
X937
DOI:
10.3969/j.issn.1671-7627.2019.05.007
文献标志码:
A
摘要:
过热液体储罐或者管道在意外情况下结构失效破裂会导致气液两相泄漏,发生剧烈的相变,形成含有大量液滴和蒸气混合物的闪蒸射流,造成灾难性后果。本文通过实验,利用高速摄影仪研究不同储存压力、过热度及喷嘴尺寸下过热液体储罐泄漏闪蒸射流形态及喷射角动态演变特征。结果表明:泄漏过程中闪蒸射流形态及喷射角演变可分为膨胀阶段、稳定阶段和衰减阶段3个阶段; 机械力作用和热力学作用的显著增加会强化闪蒸射流边缘液滴的传热传质、增大其蒸发速率,使得该区域液滴消失得更快,进而导致射流宽度减小; 随着储存压力、过热度和喷嘴尺寸的增加,喷射角增大。
Abstract:
The structure failure of superheated liquid tank or pipe under unexpected circumstances can lead to vapor-liquid two-phase release, which will form flashing jets with drastic phase change and result in catastrophic consequences. Experiments were conducted to investigate flashing jets morphological characteristics and angle evolution during two-phase release of superheated liquid tank under different storage pressures, superheats and nozzle diameters using the high-speed camera. Results showed that the evolution of jet morphology and jet angle could be divided into three phases: expansion phase, stabilization phase and decay phase. The significant increase of mechanical and thermodynamic effects would enhance the heat and mass transfer of droplets at the edge of flashing jets which led to the droplets evaporate and disappear more fast, resulting in the decrease of jet width. Jet angle increased with the increase of storage pressure, superheat and nozzle diameter.

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备注/Memo

备注/Memo:
收稿日期:2019-07-02
基金项目:国家重点研发计划(2016YFC0800100); 江苏省自然科学基金(BK20171005,17KJB62000)
作者简介:朱学良(1995—),男,E-mail:zhuxueliang@njtech.edu.cn; 潘旭海(联系人),教授,E-mail: xuhaipan@njtech.edu.cn; 宋泽阳(联系人),副教授,E-mail: zeyang.song@njtech.edu.cn.
引用本文:朱学良,宋泽阳,潘旭海,等.过热液体储罐泄漏闪蒸射流形态演变特征[J].南京工业大学学报(自然科学版),2019,41(5):577-585..
更新日期/Last Update: 2019-09-30