小几何特性小孔径细水雾离心喷嘴的数值模拟

范文宏; 凌宗余; 富庆飞; 杨杰

小几何特性小孔径细水雾离心喷嘴的数值模拟

1.
北京航空航天大学化学与环境学院, 北京 100191
2. 北京航空航天大学宇航学院, 北京 100191

基金项目: 航空科学基金资助项目(2007ZB51016)

详细信息

作者简介:
范文宏(1971-),女,黑龙江大庆人,副教授,fanwh@buaa.edu.cn.

中图分类号: TU 892
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- 被引次数: 0
出版历程
- 收稿日期: 2010-01-28
- 网络出版日期: 2011-05-30

Numerical simulation of minor geometry characteristics and small orifice water mist swirl injector

1.
School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对最大流量原理法在设计小几何特性小孔径细水雾离心喷嘴方面的不足,采用Fluent软件中的多相流混合模型,模拟了包含蒸气和水两相的喷嘴内部流动,得到了流量、喷雾锥角等宏观参数,并和实验测量数据以及理论计算值进行了对比,分析了不同结果产生的原因;同时,还对喷嘴内的气液两相体积分数、轴向与切向速度、压力分布等流场特性参数进行了分析,着重论述了与理论模型之间的差异以及相应的机理.数值模拟方法考虑了液体的粘性和壁面摩擦力等因素,较好地反映了喷嘴内部的流场特性,为小几何特性小孔径细水雾离心喷嘴的设计提供了借鉴.
- 数值模拟 /
- 几何特性 /
- 细水雾 /
- 离心喷嘴
Abstract: Due to the deficiency of the maximum discharge principle with regard to the design of the minor geometry characteristics and small orifice water mist swirl injector, a numerical investigation on it was performed by simulating the inner flow field of two phase flow injector using the mixture model in Fluent, from which the flow rate and spray angel α were obtained and compared with the experimental data and the theoretical calculation results. The gas-liquid phase distribution, axial velocity and tangential velocity, pressure distribution in the injector were also investigated. The discrepancy between the investigation and the traditional design theory was discussed and the mechanism was concluded. The viscosity of liquid and the friction of wall were taken into account which made the simulation can describe the inner flow field of injector accurately and the numerical simulation provides a reference for the design of minor geometry characteristics and small orifice water mist swirl injector.
- numerical simulation /
- geometric constant /
- water mist /
- swirl injector

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参考文献(1)

[1] NFPA 750 Standard for the installation of water mist fire protection systems[S] [2] 侯凌云,侯晓春.喷嘴技术手册[M].2版.北京:中国石化出版社,2002 Hou Lingyun,Hou Xiaochun.Technical manual for nozzle[M].2nd ed.Beijing:China Petrochemical Press,2002(in Chinese) [3] 王之任.离心喷嘴工况理论分析[J].推进技术,1996,17(5):1-8 Wang Zhiren.Theoretical and analysis for operation condition of centrifugal injector[J].Journal of Propulsion Technology,1996,17(5):1-8(in Chinese) [4] 周猛,庄逢辰.离心喷嘴雾化特性的理论计算[J].推进技术,1991,12(4):36-41 Zhou Meng,Zhuang Fengchen.Theoretical analysis on spray performance of centrifugal spray nazzle[J].Journal of Propulsion Technology,1991,12(4):36-41(in Chinese) [5] 周立新,张会强,雷凡培.离心式喷嘴内流场特性的数值模拟[J].推进技术,2002,23(6):480-484 Zhou Lixin,Zhang Huiqiang,Lei Fanpei.Numerical simulation of internal flow field of swirl nozzle[J].Journal of Propulsion Technology,2002,23(6):480-484(in Chinese) [6] 岳明,徐行,杨茂林.离心式喷嘴内气液两相流动的数值模拟[J].工程热物理学报,2003,24(5):888-890 Yue Ming,Xu Xing,Yang Maolin.Numerical study of two-phase flow in atomizer[J].Journal of Engineering Thermophysics,2003,24(5):888-890(in Chinese) [7] 徐刚.CFD在旋流喷嘴设计中的应用研究 .上海:上海交通大学机械与动力工程学院,2008 Xu Gang.Research of the CFD in design of swirl nozzle .Shanghai: School of Mechanical & Power Engineering,Shanghai Jiaotong University,2008(in Chinese) [8] 王晓琦,尹俊连,张海平,等.中空压力旋流喷嘴内流场特性研究[J].流体机械,2008,36(3):5-10 Wang Xiaoqi,Yin Junlian,Zhang Haiping,et al.Research on the inner flow field of a hollow cone pressure swirl nozzle[J].Fluid Machinery,2008,36(3):5-10(in Chinese) [9] Villa N H F,Bazarov V G.CFD analysis of swirl atomizers .AIAA-2008-5229,2008 [10] Fluent Inc.FLUENT user’s guide .Lebanon:Fluent Inc,2006 [11] 江帆,黄鹏.Fluent高级应用与实例分析[M].北京:清华大学出版社,2008 Jiang Fan,Huang Peng.Fluent advanced applications and case analysis[M].Beijing:Tsinghua University Press,2008(in Chinese)

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