全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

船舶蒸汽蓄热器放汽管路热冲击特性预测

DOI: 10.11949/j.issn.0438-1157.20150322, PP. 4431-4437

Keywords: 蒸汽蓄热器,放汽管路,热冲击特性

Full-Text   Cite this paper   Add to My Lib

Abstract:

船舶放汽管路具有放汽周期短、热冲击能量高、负荷波动大的特点,其运行特性直接影响蒸汽蓄热器的安全稳定工作。以典型船舶蒸汽蓄热器放汽管路为原型,采用标准k-ε模型计算湍流脉动过程,通过数值模拟的方法计算了船舶蒸汽蓄热器放汽管路的水动力特性,获得流速、压力、湍动能及壁面剪切应力等参数的分布规律,基于流致振动而诱发流体热冲击的机理,揭示了与流致振动密切相关的热冲击能量图谱。计算结果显示,在高温高压饱和蒸汽掺混流动过程中,三通管区域呈现蒸汽冲击流速高,湍流脉动剧烈,壁面剪切应力大的特点;基于蒸汽热冲击能量分布图谱,放汽管路上弯管和三通管件局部区域蒸汽热冲击能量较大,其中三通管热冲击能量最大,可以预测三通管件承受的热冲击破损最严重,实物检测破损数据验证了数值预测结果。

References

[1]  Sun Changjiang (孙长江), Yang Yuanlong (杨元龙). Numerical simulation on the dynamic characteristics of marine steam accumulators under different operating conditions [J]. Chinese Journal of Ship Research (中国舰船研究), 2014, 9(5): 105-109.
[2]  Guo Jiamin (郭家敏), Sun Baozhi (孙宝芝), Lei Yu (雷雨), Zhang Guolei (张国磊), Yang Longbin (杨龙滨), Li Yanjun (李彦军). Mathematical model of continuous working process of marine steam accumulator and its performances simulation [J]. CIESC Journal (化工学报), 2014, 65(S1): 346-352.
[3]  Sun Baozhi (孙宝芝), Guo Jiamin (郭家敏), Lei Yu (雷雨), Yang Longbin (杨龙滨),Zhang Guolei (张国磊), Li Yanjun (李彦军). Non-equilibrium thermodynamics process of marine steam accumulator [J]. CIESC Journal (化工学报), 2013, 64(S1): 59-65.
[4]  Hu Jimin (胡继敏), Jin Jiashan (金家善), Yan Zhiteng (严志腾). Measuring method for thermodynamic performance of marine steam accumulator during quick charge process [J]. Ship Engineering (船舶工程), 2012, 34(S2): 55-59.
[5]  Gong Chongling (龚崇龄), Liu Xiaohui (刘晓慧). Thermo-hydraulic feature analysis of steam accumulator operation [J]. Journal of Wuhan Autotive Polytechnic University (武汉汽车工业大学学报), 1996, 18(3): 73-77.
[6]  Vladimir D S, Blazenka M, Sanja P. Dynamics of steam accumulation [J]. Appl. Therm. Eng., 2012, 37:73-79.
[7]  Kulikow Y A, Loskutov Y V. Numerical-experimental investigation of the elastic deformation of a polymeric pipeline under impact [J]. J. Appl. Mech. Tech. Phy., 2001, 42(2): 294-299.
[8]  Chu Zhuli (初珠立), Yang Zichun (杨自春). Quantitative safety analysis on the damage of marine boiler steam gas pipelines based on bayesian network [J]. Chinese Journal of Ship Research (中国舰船研究), 2010, 5(5):59-63.
[9]  Li Zaicheng (李再承), Hou Guoxiang (侯国祥), Wu Chongjian (吴崇健). Research progress on sound radiation of turbulence in pipeline [J]. Chinese Journal of Ship Research (中国舰船研究), 2007, 2(1): 34-38.
[10]  Semke W H, George D B. Efficient dynamic structural response modelling of bolted flange piping systems [J]. J. Pre. Vess. Pip., 2006, 83: 767-776.
[11]  Ferng Y M, Ma Yinpang, Kang J C. Thermal-hydraulic simulation of localized flow characteristics in a steam generator [J]. Nucl. Technol., 2000, 136: 186-194.
[12]  Ferng Y M, Chang H J. CFD investigating the impacts of changing operating conditions on the thermal-hydraulic characteristics in a steam generator [J]. Appl. Therm. Eng., 2008, 28: 414-422.
[13]  Sun Baozhi, Yang Yuanlong. Numerically investigating the influence of tube support plates on thermal-hydraulic characteristics in a steam generator [J]. Appl. Therm. Eng., 2013, 51: 611-622.
[14]  Yang Yuanlong (杨元龙), Sun Baozhi (孙宝芝), Yang Longbin (杨龙滨), Zhang Yu (张羽). Numerical simulation on vapor-liquid two-phase of the secondary circuit in steam generator [J]. Atomic Energy Science and Technology (原子能科学技术), 2012, 46(1): 110-114.
[15]  Yang Yuanlong, Sun Baozhi, Li Yanjun. CFD investigation of thermal-hydraulic characteristics for a steam generator with and without tube support plates [J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2013, 31: 358-365.
[16]  Ferng Y M. Investigating the distribution characteristics of boiling flow and released nuclide in the steam generator secondary side using CFD methodology [J]. Ann. Nucl. Energy, 2007, 34: 724-731.
[17]  Ferng Y M. A two-phase methodology to predict FAC wears sites in the piping system of a BWR [J]. Nucl. Eng. Des., 2008, 238: 2189- 2196.
[18]  Xun Zhenyu (荀振宇), Yang Yuanlong (杨元龙). Numerical simulation on the dynamic performance of marine steam accumulators under two different charging modes [J]. Chinese Journal of Ship Research (中国舰船研究), 2014, 9(6): 105-109.
[19]  Li Yanjun, Yang Yuanlong, Sun Baozhi. Numerical investigation of thermal-hydraulic characteristics in a steam generator using a coupled primary and secondary side heat transfer model [J]. Ann. Nucl. Energ., 2013, 55: 258-264.
[20]  Axisa F, Andunes J, Villard B. Overview of numerical methods for predicting flow-induced vibration [J]. J. Press. Vess. Tech., 1988, 110: 6.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133