期刊文献+

自然循环过冷沸腾流动不稳定性的研究 被引量:3

STUDY ON FLOW INSTABILITY IN A NATURAL CIRCULATION SYSTEM WITH SUBCOOLED BOILING
下载PDF
导出
摘要 本文以氟里昂12作工质,对自然循环过冷沸腾流动不稳定性进行了实验研究,实验过程中发现自然循环系统内可能发生高频脉动和低频脉动两类流动不稳定性,并证实高频脉动属于声波型脉动,低频脉动属于密度波型脉动。本文以两相流漂移模型为基础,对自然循环过冷沸腾流动不稳定性进行了数值模拟,数学模型考虑了热力学非平衡即过冷沸腾和过冷凝结对流动不稳定性的影响。数值模拟结果与实验结果符合良好。 This paper presents both the experimental study and theoretical analysis of flow instability in a natural circulation system with subcooled boiling. Freon-12 was used as the working medium. It is found from the experiments that two kinds of flow instability, high frequency oscillations and low frequency oscillations may occur in the natural circulation system with subcooled boiling. The high frequency oscillations have the characteristics of acoustic oscillations, while the low frequency oscillations belong to density wave instability. A mathematical model based on the drift flux model has been developed to analyze the subcooled two-phase flow instabilities in the natural circulation system. In the mathematical model, the modified Levy model is used to calculate the void fraction in the heated section. The 'Condensation-time' model is used to predict the void fraction in the unheated riser. The finite difference equations are solved by using the SlMPLEC method. The caloulated results are in good agreement with the experimenial data.
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2004年第3期435-438,共4页 Journal of Engineering Thermophysics
基金 国家自然科学基金(No.59995461) 空泡物理和自然循环重点实验室2000年基金
关键词 自然循环 过冷沸腾 流动不稳定性 实验研究 数值模拟 natural circulation subcooled boiling flow instability experiment numerical simulation
  • 引文网络
  • 相关文献

参考文献5

  • 1Arneodo C A, Gaggaro G, Grigorio P, et al. The Oscillation Onset in a Pressurized Water Natural Circulation Loop. Experimental Investigation. In: Symposium on Two-Phase Flow Dynamics. Eindhoven, 1967. 1: 179-203
  • 2Arneodo C A, Gaggaro G, Grigorio P, et al. The Oscillation Onset in a Pressurized Water Natural Circulation Loop, Criteria for Natural Circulation Instability Onset Prediction. In: Symposium on Two-Phase Flow Dynamics. Eindhoven, 1967. 1:827-839
  • 3Collier J G. Convective Boiling and Condensation. New York: McGrw-Hill, 1981
  • 4Patankar S V. Numerical Heat Transfer and Fluid Flow.New York: McGraw-Hill, 1980
  • 5杨瑞昌,王彦武,唐虹,梁玥.自然循环过冷沸腾净蒸汽产生点的实验研究[J].工程热物理学报,2003,24(2):247-250. 被引量:8

二级参考文献6

  • 1[1]J G Collier, J R Thome. Convective Boiling and Condensation. Third Edition. Oxford University Press, 1994
  • 2[2]Z L Miropolskii, et al. Void Fraction of Water-Steam Mixture Flow with or Without Heat Transfer. Teploenergetika, 1971, (5): (in Russian)
  • 3[3]P Saha, N Zuber. Point of Net Vapour Generation and Vapour Void Fraction in Subcooled Boiling. In: Proc. of the 5th International Heat Transfer Conference. Tokyo,1974. Paper B4.7
  • 4[4]S Levy. Forced Convection Subcooled Boiling Prediction of Vapor Volumetric Fraction. Int. J. Heat Mass Transfer, 1967, 10:951-965
  • 5[5]S C Lee, H Dorra, S G Bankoft. A Critical Review of Predictive Models for the Onset of Significant Void in Forced Convection Subcooled Boiling. Presented at ASME Winter Ann. Mtg. Anaheim, CA, 1992
  • 6[6]H O Chang, J C Chapman. Two-Phase Flow Instability for Low-Flow Boiling in Vertical Heated Thin Rectangular Channels. Nuclear Technology, 1996, 113:327-337

共引文献7

同被引文献21

  • 1孙奇,杨瑞昌,王小军,郗昭,赵华.低流速过冷沸腾截面平均空泡率实验研究[J].原子能科学技术,2005,39(3):193-197. 被引量:2
  • 2杨瑞昌,王彦武,王飞,唐虹,施德强,鲁钟琪.自然循环过冷沸腾流动不稳定性的实验研究[J].核动力工程,2005,26(4):317-322. 被引量:10
  • 3张龙飞,张大发.U形管蒸汽发生器模型及动态仿真[J].锅炉技术,2006,37(4):9-11. 被引量:6
  • 4Femg Y M,Ma Y P,Kang J C. Thermal-hydraulic simula-tion of localized flow characteristics in a steam generator[J] Nuclear Technology,2001,136(2) :186-196.
  • 5Femg Y M,Chang H J. CFD investigating the impacts ofchanging operating conditions on the thermal-hydrauliccharacteristics in a steam generator [ J]. Applied ThermalEngineering,2008,28(5/6) :414-422.
  • 6Femg Y M. Investigating the distribution characteristics ofboiling flow and released nuclide in the steam generatorsecondary side usiing CFD methodology [ J ]. Annals ofNuclear Energy,2Q07,34(9) :724-731.
  • 7Sun Q,Yang R,Zhao H.Predictive study of the incipient pointof net vapor generation in low-flow subcooled boiling [ J ].Nuclear Engineering and Design,2003 ,225(2/3) :249-256.
  • 8Chen E,Li Y,Cheng X. CFD simulation of upward sub-cooled boiling flow of refrigerant-113 using the two-fluidmodel [ J]. Applied Thermal Engineering,2009,29(11/12) :2508-2517.
  • 9Bartolomej G G, Chanturiya V M. Experimental study oftrue void fraction when boiling subcooled water in verticaltubes [J] .Thermal Engineering, 1967,14(2) :123-128.
  • 10Kurul N’Podowski M Z. On the modeling of multidimen-sional effects in boiling channels [C] // ANS Procee-dings of 27th National Heat Transfer Conference. Minnea-polis; ANS,1991.

引证文献3

二级引证文献2

相关主题

;
使用帮助 返回顶部