排灌机械工程学报
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排灌机械工程学报  2013, Vol. 31 Issue (2): 98-102    DOI: 10.3969/j.issn.1674-8530.2013.02.002
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
不同湍流模型对射流泵内部流场模拟的影响
 杨雪龙, 龙新平, 肖龙洲, 吕桥
(1.武汉大学动力与机械学院, 湖北 武汉 430072; 2.水射流理论与新技术湖北省重点实验室, 湖北 武汉 430072)
Influence of different turbulence models on simulation of internal flow field of jet pump
 YANG  Xue-Long, LONG  Xin-Ping, XIAO  Long-Zhou, Lv Qiao
(1.School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, China; 2.Key Laboratory of Hubei Province for Waterjet Theory & New Technology, Wuhan, Hubei 430072, China)
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摘要 为研究不同湍流模型和壁面边界处理方法对射流泵性能和内部流场模拟的影响,尝试寻找一种能够准确预测射流泵性能和内部流场的湍流模型与相应壁面处理方法的组合.将6种湍流模型(即3种k-ε模型,标准和SST k-ω模型以及RSM模型)和2种壁面处理方法(标准壁面函数和增强壁面处理方法)进行搭配.3种k-ε模型和RSM模型分别采用2种壁面处理方法,2种k-ω模型作为低雷诺数模型使用,不采用壁面处理方法,由此共得到10种组合.以某射流泵为例,将其壁面静压分布和性能试验数据作为参考来验证这10种组合的效果.结果表明:当流量比较小时,10种组合均与试验结果吻合较好;当流量比较大时,10种组合的模拟误差均大于10%.通过修正湍流模型常数,部分组合的模拟结果与试验数据之间的误差可以降低到5%以内.模型常数C2ε比σε对计算结果影响更大.湍动能的最大值随着C2ε或σε值的减小而减小,而湍动能的分布区域却相应的增大.
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杨雪龙
龙新平
肖龙洲
吕桥
关键词射流泵   湍流模型   数值模拟   壁面函数   模型常数     
Abstract: To study the effect of different turbulence models and related wall boundary treatment methods on the simulation of the performance and internal flow field of a jet pump, and to find their good combination, six turbulence models (namely, three k-ε models, standard and SST k-ω models and Reynolds stress models) and two wall treatment methods (standard wall functions and enhanced wall treatment) were combined in different ways. Standard wall functions and enhanced wall treatment were respectively applied to three k-ε models and RSM model. Both k-ω models were used as lowReynoldsnumber models without applying any wall treatment methods. Ten combinations were thus obtained. The data of the performance and the static wall pressure distribution of a jet pump were employed as the criteria to validate the simulation results. The results show that all the ten combinations agree well with the experiment data when the volumetric flow ratio is relatively low, and all simulation errors of the ten combinations are greater than 10% when working at relatively high flow ratio. After adjusting constants of the turbulent model, for some combinations, the difference between the errors of the predicted results and the experiment data were lowered to be less than 5%. The model constant C2ε has a greater influence than σε on the calculation; and the maximum turbulence energy decreases as  C2ε or σε decreases, but the distribution region of turbulence energy expands correspondingly.
Key wordsjet pump   turbulence model   numerical simulation   wall function   model constant   
收稿日期: 2012-10-22; 出版日期: 2013-02-28
基金资助:

国家自然科学基金资助项目(51179134); 中央高校基本科研业务费专项资金资助项目

通讯作者: 龙新平(1967—),男,湖北监利人,教授,博士生导师(xplong@whu.edu.cn),主要从事流体机械及工程、喷射技术、泵与泵装置的优化运行等研究.   
作者简介: 杨雪龙(1988—),男,安徽阜阳人,博士研究生(xuelongge@126.com),主要从事流体机械及工程、喷射技术研究.
引用本文:   
杨雪龙,龙新平,肖龙洲等. 不同湍流模型对射流泵内部流场模拟的影响[J]. 排灌机械工程学报, 2013, 31(2): 98-102.
YANG Xue-Long,LONG Xin-Ping,XIAO Long-Zhou et al. Influence of different turbulence models on simulation of internal flow field of jet pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(2): 98-102.
 
[1] Narabayashi T, Yamazaki Y, Kobayashi H, et al. Flow analysis for single and multinozzle jet pump [J]. JSME International Journal Series B: Fluids and Thermal Engineering, 2006, 49(4):933-940.
[2] Long Xinping, Han Ning, Cheng 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(10): 1959-1965.
[3] 龙新平,程茜,韩宁,等.射流泵最佳喉嘴距的数值模拟[J].核动力工程, 2008, 29(1):35-38.
Long Xinping, Cheng Qian, Han Ning, et al. Numerical simulation of optimal nozzletothroat clearance of jet pump [J]. Nuclear Power Engineering, 2008, 29(1):35-38.(in Chinese)
[4] Mallela R, Chatterjee D. Numerical investigation of the effect of geometry on the performance of a jet pump [J]. Journal of Mechanical Engineering Science, 2011, 225(7):1614-1625.
[5] 龙新平,姚鑫,杨雪龙.多孔喷嘴射流泵流动模拟与涡结构分析[J].排灌机械工程学报,2012,30(2):136-140,152. 浏览
Long Xinping, Yao Xin, Yang Xuelong. Flow simulation and vortex structure analysis of multinozzle jet pumps[J]. Journal of Drainage and Irrigation Machinery Engineering, 2012,30(2):136-140,152. (in Chinese) 浏览
[6] Elhayek M D, Hammoud A H. Prediction of liquid jet pump performance using computational fluid dynamics[C]//Proceedings of the 4th WSEAS International Conference on Fluid Mechanics and Aerodynamics. Elounda, Greece:[s.n.], 2006:148-153.
[7] Pope S B. Turbulent Flows [M]. Cambridge: Cambridge University Press, 2000.
[8] 陶文铨.数值传热学[M]. 2版.西安:西安交通大学出版社,2001.
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