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排灌机械工程学报  2019, Vol. 37 Issue (3): 270-276    DOI: 10.3969/j.issn.1674-8530.17.0153
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射流脉冲三通结构参数数值模拟与优化
徐胜荣,王新坤*,肖思强,樊二东
江苏大学国家水泵及系统工程技术研究中心, 江苏 镇江 212013
Numerical simulation and optimization of structural parameters of jet-pulse tee
XU Shengrong, WANG Xinkun*, XIAO Siqiang, FAN Erdong
National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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摘要 基于CFX数值模拟技术,对射流脉冲三通的内部结构进行设计.首先通过控制变量法,得到了射流三通的稳定振荡区间,其中各关键结构参数的设计范围分别为分流劈距20~45 mm,位差1.1~2.1 mm,侧壁倾角6°~16°.在该结构范围内进行4因素3水平正交试验设计,4组因素分别为位差比、侧壁倾角、劈距比、喷嘴深宽比,3组水平分别为脉冲频率、水头振幅和流量振幅,得到了各因素对性能指标的影响主次顺序和最优模型设计方案.对比优化模型与普通模型的脉冲效果,模拟结果表明优化模型的脉冲频率提高了0~2.5 Hz,水头振幅提高了0~20 kPa.对普通三通和射流三通的脉冲效果进行水力性能试验,其中射流三通的脉冲频率为2.0~4.0 Hz,比模拟结果偏小,水头振幅为17~53 kPa,比模拟结果偏大.与普通三通相比,不同压力条件下,射流三通的单侧出口流量均较大,说明射流三通能够提供稳定的脉冲水流.
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徐胜荣
王新坤*
肖思强
樊二东
关键词射流脉冲三通   数值模拟   振荡区间   正交试验   脉冲水流     
Abstract: Based on CFX technology, the internal structure of jet pulse tee was designed in this paper. Firstly, the stable oscillation range of the jet pulse tee was obtained by Control Variates. The design range of the key structural parameters was as follows: the split distance was 20-45 mm, the potential difference was 1.1-2.1 mm and the side wall angel was 6 ?-16 ?. The four factors and three levels orthogonal was designed within the scope of the structure, four factors were split distance ratio, side wall angel, potential difference ratio and depth-to-width ratio and three levels were pulse frequency, pressure amplitude and flow amplitude. The influencing factors in decreasing order of importance and optimal design was obtained. The simulation results show that the pulse frequency of the optimal model increased 0-2.5 Hz and the pressure amplitude increased 0-20 kPa by comparing with the ordinary model. The hydraulic performance test of the common tee and the jet pulse tee was carried out. The pulse frequency of the jet pulse tee was 2.0-4.0 Hz which was smaller than the simulation results, and the pressure amplitude was 17-53 kPa which was larger than the simulation results. Compared with the common tee, the flow rate of the jet pulse tee outlet was larger under different pressure conditions, which indicates that the jet pulse tee can provide stable pulse flow.
Key wordsjet-pulse tee   numerical simulation   oscillation range   orthogonal test   pulse flow   
收稿日期: 2017-07-05;
基金资助:江苏省科技计划项目(BE2018373);国家自然科学基金资助项目(51579116)
引用本文:   
徐胜荣,王新坤*,肖思强等. 射流脉冲三通结构参数数值模拟与优化[J]. 排灌机械工程学报, 2019, 37(3): 270-276.
XU Sheng-Rong,WANG Xin-Kun-*,XIAO Si-Qiang et al. Numerical simulation and optimization of structural parameters of jet-pulse tee[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(3): 270-276.
 
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