排灌机械工程学报
   Home  About Journal  Editorial Board  Author Center  Subscriptions    中文 
Journal of Drainage and Irrigation Machinery Engin  2013, Vol. 31 Issue (1): 25-30    DOI: 10.3969/j.issn.1674-8530.2013.01.006
article Current Issue | Next Issue | Archive | Adv Search Previous Articles  |  Next Articles  
Comparison of internal flows in jet pump predicted by various turbulence models
 ZHOU  Ling-Jiu, YUAN  Ling-Li
(College of Water Resource and Civil Engineering, China Agriculture University, Beijing 100083, China)
 Download: PDF (2007 KB)   HTML (1 KB)   Export: BibTeX | EndNote (RIS)      Supporting Info
Abstract  In order to clarify the mixing process between the working fluid and the sucked fluid in a jet pump, several twoequation turbulence models (Standard k-ε, RNG k-ε, Realizable k-ε and SST k-ω model) and Large Eddy Simulation model were used to calculate 3D singlephase flow field in the pump, and the numerical results were compared with the experimental data. The results showed that the pressure ratio and efficiency obtained by LES model agreed well with the experimental data. All the above twoequation turbulence models overestimated the energy dissipation during the mixing process and the vortex structure in the mixing layer was not well predicted by them. Just the LES model, however, showed the coherent vortex structure in the mixing layer, which precisely reflects the transport of momentum and energy, and the mixing process between the working fluid and sucked fluid. Further the predicted characteristic curves by LES achieved better agreement with the experimental observations than those by the rest turbulence models. Then LES was chosen to simulate the internal flow of the jet pump at different flow ratios. The results showed that the mixing zone between the working fluid and the sucked fluid moved away from the throat to downstream with increasing flow ratio; consequently the core flow with high velocity is stretched along the axial direction and the axial velocity of the mixed fluid is also increased.
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
ZHOU Ling-Jiu
YUAN Ling-Li
Key wordsjet pump   numerical simulation   large eddy simulation   singlephase flow   flow characteristic     
Received: 2012-03-13; Published: 2013-01-31
Cite this article:   
ZHOU Ling-Jiu,YUAN Ling-Li. Comparison of internal flows in jet pump predicted by various turbulence models[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 25-30.
 
[1] Yamazaki Yukitaka, Yamazaki Atsushi, Narabayashi Tadashi, et al. Studies on mixing process and performance improvement of jet pumps:Effects of nozzle and throat shapes [J]. Journal of Fluid Science and Technology, 2007,2 (1): 238-247.
[2] 黄剑峰,张立翔,王文全,等. 基于大涡模拟的水轮机内瞬态湍流场特性分析[J]. 排灌机械工程学报,2010,28(6): 502-505. 浏览
Huang Jianfeng, Zhang Lixiang, Wang Wenquan, et al. Large eddy simulation of transient turbulent flow in Francis turbine[J]. Journal of Drainage and Irrigation Machinery Engineering, 2010,28(6): 502-505.(in Chinese) 浏览
[3] Karabelas S J. Large eddy simulation of highReynolds number flow past a rotating cylinder[J]. International Journal of Heat and Fluid Flow, 2010, 31(4): 518-527.
[4] 王春林,司艳雷,赵佰通,等. 旋流自吸泵内部湍流场大涡模拟[J]. 农业机械学报,2009,40(9): 68-72,97.
Wang Chunlin, Si Yanlei, Zhao Baitong, et al. Large eddy simulation on interior flow field of rotational rlow selfpriming pump[J]. Transactions of the Chinese Society for Agricultural Machinery, 2009, 40(9): 68-72,97.(in Chinese)
[5] 文吉运,于波,陆宏圻,等. 射流泵内流场的大涡模拟[J]. 武汉大学学报:工学报,2007,40(2): 110-114.
Wen Jiyun, Yu Bo, Lu Hongqi, et al. Large eddy simulation for jet pump flow[J]. Engineering Journal of Wuhan University, 2007,40(2): 110-114.(in Chinese)
[6] Long Xinping, Han Ning, Chen Qian. Influence of nozzle exit tip thickness on the performance and flow field of jet pump[J]. Journal of Mechanical Science and Technology, 2008,22:1959-1965.
[7] 于凤荣,闰国军,张建蓉. 射流泵流场三维数值模拟[J]. 水泵技术,2006 (6):21-23.
[8] Yu Fengrong, Run Guojun, Zhang Jianrong. 3D numerical simulation of jet pump[J]. Pump Technology, 2006(6):21-23.(in Chinese)
[9] 蔡标华. 射流泵初生空化及其试验研究[D]. 武汉:武汉大学动力与机械学院,2005.
[10] Lu Changgen, Cao Weidong, Qian Jianhua. A study on numerical method of Navier-Stokes equation and nonlinear evolution of the coherent structures in a laminar boundary layer[J]. Journal of Hydrodynamics, 2006, 18(3):372377.
[11] 张兆顺,崔桂香,许春晓. 湍流大涡数值模拟的理论和应用[M]. 北京:清华大学出版社,2008.
[1] WANG Yu-Chuan, CAO Shu-Liang, GAO Chuan-Chang, WANG Song-Lin. Analysis of flow in liquid jet pump—PartⅡ:Determination of dimensionless coefficients in theoretical model[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 1-6.
[2] LIU Wei, YUAN Shou-Qi, LI Xiao-Jun, PAN Zhong-Yong. Effects of slotted blades on internal flow in centrifugal pump of low specific speed[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 11-14.
[3] YANG Guo-Lai, WU Guo-Guo, LIU Xiao-Xiong, CAO Wen-Bin, XU Min-Ying. Dynamic characteristics of axial flow check valve[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 46-49.
[4] ZHU Rong-Sheng, LI Xiao-Long, SHI Wei-Dong, LIU Ling-Ling, WANG Tao. simulation and experimental study on submersible selfaspirating aerator[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 50-55.
[5] XIANG Qing-Jiang, YUN Qiang-Long, LI Hong, WU Yan-Lan. Experimental study on performance of liquid jet gas pump by utilizing wallattached fluidic oscillator[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 650-654.
[6] WANG Song-Lin, WANG Yu-Chuan, GUI Shao-Bo, GAO Chuan-Chang, CAO Shu-Liang. Analysis of flow in liquid jet pump—Part Ⅰ:Experiment and threedimension numerical simulation[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 655-659.
[7] SHI Wei-Dong, WANG Chuan, SI Qiao-Rui, XU Jing, LU Wei-Gang. Influence of interstage seal clearance on performance of newtype well pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 627-631.
[8] CHENG Li, Bart P.M. van Esch, LIU Chao, ZHOU Ji-Ren, JIN Yan. Radial forces of waterjet propulsion mixedflow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 636-640.
[9] ZHANG Jin-Ya, ZHU Hong-Wu, XU Bing-Gui, DING Kuang, QIANG Rui. improving gas and liquid phases mixing in impeller with high gas void fraction[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 641-645.
[10] ZHENG Tie-Gang, DAI Hui-Chao, DING Quan-Lin. Computation of spatial submerged hydraulic jump with different abrupt expansion ratios[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 670-676.
[11] LI Liang-Chao, ZENG Xiang-Wei, XIANG Ke-Feng, XU Bin, SONG Dan-Lu. Numerical simulation of opening process of shuttle check valve[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(6): 710-714.
[12] Shi-Wei-Dong- , LONG Fei, ZHANG De-Sheng, LENG Hong-Fei, WANG Guo-Tao. Numerical simulation of solidliquid twophase turbulent flowin submersible axialflow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(5): 508-512.
[13] HE Xiu-Hua-1, ZHUO Hong-Cai-1, YANG Song-1, DENG Zhi-Dan-2, Li-Fu-1. Analysis on flow characteristic of flatwalled diffusers applied in valveless piezoelectric pumps[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(5): 532-537.
[14] YANG Cong-Xin, DU Yuan-Ying, LI Yi-Bin. Effects of guide vanes parameters on water resistance coefficient and efficiency of mixedflow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(5): 538-542.
[15] CHENG Wei-Ping, ZHANG Jun-Jun, CHEN Yi-Min, GAO Yue. Hydraulic control of super short vertical well entry/draft tube[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(5): 548-552.

Copyright © 2011 Journal of Drainage and Irrigation Machinery Engineering
Support by Beijing Magtech Co.Ltd   E-mail: support@magtech.com.cn