非结构网格离心泵全流场数值模拟研究

李社新; 金晶

doi:10.13433/j.cnki.1003-8728.2016.0209

非结构网格离心泵全流场数值模拟研究

doi: 10.13433/j.cnki.1003-8728.2016.0209

李社新^1,2,
金晶²

1.
西安理工大学水利水电学院, 西安 710048;
2.
西北工业大学航空学院, 西安 710072

基金项目:

国家自然科学基金项目(40971161,40771124)与陕西省自然科学基金重点项目(SJ08-ZD02)资助

详细信息

作者简介:
李社新(1972-),副研究员,博士研究生,研究方向为土壤侵蚀与水土保持,lishexin@nwpu.edu.cn

计量
- 文章访问数: 141
- HTML全文浏览量: 24
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-09
- 刊出日期: 2016-02-05

Numerical Simulation of Centrifugal Pump Flow Field Based on Unstructured Meshes

Li Shexin^1,2,
Jin Jing²

1.
Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, China;
2.
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 相对于传统的理论和实验方法,采用数值模拟的方法能够更快捷地获得离心泵的内部流场分布。研究了离心泵全流场数值求解的方法,构建了离心泵的几何模型并划分非结构网格,采用了CFX软件,通过求解雷诺平均N-S方程,对离心泵流场进行了数值模拟,计算得到了离心泵在不同工况下的扬程和效率。将计算值与实验值进行了对比,在设计工况点Q的条件下,扬程相对误差为2.8%,效率值相对误差为1.8%。因此,针对离心泵建立的基于非结构网格的离心泵全流场数值求解方法是可靠的,能够快速准确的对离心泵进行性能预测与分析。
- 数值模拟 /
- 离心泵 /
- 流场 /
- 非结构网格 /
- 雷诺平均N-S方程 /
- 扬程
Abstract: Comparing with conventional theoretical and experimental approaches, the numerical simulation method is faster to obtain the inside flow field distribution of centrifugal pumps. This can be used as references in centrifugal pump design. Thus, the numerical method on flow field in centrifugal pump was explored in this article. Geometry model was built and unstructured meshes were generated. Numerical simulation was adopted by solving the Reynolds Average Navier-Stokes (RANS) equation with CFX software. Total head and efficiency of centrifugal pump under different working conditions were calculated. The simulation results and measured data were compared; the relative error of total head is 2.8% while the error of efficiency is 1.8% at designed working point Q. Thus, the numerical method for whole flow field of centrifugal pump built in this article is reliable; it can predict and analyze the performance of centrifugal pumps rapidly and accurately.
- centrifugal pump /
- flow field /
- numerical simulation /
- reynolds average navier-stokes equation /
- total head /
- unstructured mesh

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参考文献(16)

[1]	邹涛.离心泵内部三维复杂流场的数值研究[D].西安:西安理工大学,2007 Zou T. Numerical investigation of three-dimension turbulent flow fields in a centrifugal pump[D]. Xi'an:Xi'an University of Technology, 2007(in Chinese)
[2]	黄思,桑迪科.多级离心泵三维流场数值模拟及性能预测[J].机械科学与技术,2010,29(6):705-708 Huang S, Sang D K. Numerical simulation of the three-dimensional flow field in a multistage centrifugal pump and its performance prediction[J]. Mechanical Science and Technology for Aerospace Engineering, 2010,29(6):705-708(in Chinese)
[3]	Lakshminarayana B. An assessment of computational fluid dynamic techniques in the analysis and design of turbomachinery-The 1990 Freeman Scholar Lecture[J]. Journal of Fluids Engineering, 1991,113(3):315-352
[4]	Roche-Carrier N L, Ngoma G D, Ghie W. Numerical investigation of liquid flow in two-, three-and four-stage centrifugal pumps[C]//2014 International Conference on Simulation and Modeling Methodologies, Technologies and Applications, Vienna, Austria:IEEE Computer Society, 2014:92-99
[5]	任涛,闫永强,梁武科.CFD技术在离心泵优化设计中的应用[J].排灌机械,2007,25(1):25-28 Ren T, Yan Y Q, Liang W K. Application of CFD to optimization design for centrifugal pump[J]. Drainage and Irrigation Machinery, 2007,25(1):25-28(in Chinese)
[6]	周天孝,白文.CFD多块网格生成新进展[J].力学进展,1999,29(3):344-368 Zhou T X, Bai W. Recent progress in multi-block grid generation[J]. Advances in Mechanics, 1999,29(3):344-368(in Chinese)
[7]	Shah S R, Jain S V, Patel R N, et al. CFD for centrifugal pumps:a review of the state-of-the-art[J]. Procedia Engineering, 2013,51:715-720
[8]	陈池,袁寿其,郑铭,等.离心泵叶轮三维贴体网格生成[J].农业机械学报,2000,31(4):50-53 Chen C, Yuan S Q, Zheng M, et al. 3-D body-fitted grid generation of centrifugal pump impellers[J]. Transactions of the Chinese Society of Agricultural Machinery, 2000,31(4):50-53(in Chinese)
[9]	周水清,孔繁余,王志强,等.基于结构化网格的低比转数离心泵性能数值模拟[J].农业机械学报,2011,42(7):66-69 Zhou S Q, Kong F Y, Wang Z Q, et al. Numerical simulation for low specific-speed centrifugal pump with structured grid[J]. Transactions of the Chinese Society of Agricultural Machinery, 2011,42(7):66-69(in Chinese)
[10]	李晓俊,袁寿其,潘中永,等.基于结构化网格的离心泵全流场数值模拟[J].农业机械学报,2013,44(7):50-54 Li X J, Yuan S Q, Pan Z Y, et al. Numerical simulation of whole flow field for centrifugal pump with structured grid[J]. Transactions of the Chinese Society of Agricultural Machinery, 2013,44(7):50-54(in Chinese)
[11]	Rubbert P E, Lee K D. Patched coordinate systems[J]. Applied Mathematics and Computation, 1982:232-252
[12]	董亮,刘厚林,谈明高,等.离心泵全流场与非全流场数值计算[J].排灌机械工程学报,2012,30(3):274-278 Dong L, Liu H L, Tan M G, et al. Numerical calculation of whole and non-whole flow field in centrifugal pumps[J]. Journal of Drainage and Irrigation Machinery Engineering, 2012,30(3):274-278(in Chinese)
[13]	杨倩.基于不同湍流模型的离心泵内部流场数值模拟与分析[D].兰州:兰州理工大学,2010 Yang Q. Numerical simulation and analysis on the internal flow in centrifugal pump based on different turbulence models[D]. Lanzhou:Lanzhou University of Technology, 2010(in Chinese)
[14]	纪兵兵,陈金瓶.ANSYS ICEM CFD网格划分技术实例详解[M].北京:中国水利水电出版社,2012 Ji B B, Chen J P. Detail examples on mesh generation in ANSYS ICEM CFD[M]. Beijing:China Water & Power Press, 2012(in Chinese)
[15]	薛冰军.离心泵内部流场的数值模拟与实验分析[D].邯郸:河北工程大学,2012 Xue B J. The numerical simulation and experimental analysis of inner flow field of centrifugal pump[D]. Handan:Hebei University of Engineering, 2012(in Chinese)
[16]	汪家琼,蒋万明,孔繁余,等.固液两相流离心泵内部流场数值模拟与磨损特性[J].农业机械学报,2013,44(11):53-60 Wang J Q, Jiang W M, Kong F Y, et al. Numerical simulation of solid-liquid two-phase turbulent flow and wear characteristics of centrifugal pump[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013,44(11):53-60(in Chinese)