螺旋流对环形射流泵性能影响的数值模拟

董景明; 杜贞钰; 陈晨; 徐国立

doi:10.13433/j.cnki.1003-8728.20200639

螺旋流对环形射流泵性能影响的数值模拟

doi: 10.13433/j.cnki.1003-8728.20200639

大连海事大学轮机工程学院, 辽宁大连 116026

基金项目:

国家自然科学基金项目 51979022

详细信息

作者简介:
董景明(1983-), 副教授, 硕士生导师, 研究方向为船舶与海洋工程技术研究, dmudjm@dlmu.edu.cn

中图分类号: TB752⁺.3
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- 文章访问数: 134
- HTML全文浏览量: 58
- PDF下载量: 19
- 被引次数: 0
出版历程
- 收稿日期: 2021-04-30
- 刊出日期: 2023-04-25

Numerical Investigation on Influence of Spiral Flow on Performance of Annular Jet Pump

Marine Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China

摘要

摘要: 为了提高环形射流泵的输送效率, 本文提出了一种利用导叶结构形成螺旋流的螺旋流环形射流泵。利用数值模拟的方法研究不同工作压力下的螺旋流环形射流泵和原型泵的速度、压力和湍动能分布计算结果, 来分析螺旋流对环形射流泵的性能影响。数值模拟结果表明: 在工作压力为130 kPa时, 螺旋流使环形射流泵的流量比增加了43.1%, 压力比降低了22.8%。螺旋流降低了环形射流泵喉管内的静压, 更容易引起空化。螺旋流使得环形射流泵的效率在工作压力低于160 kPa时大于原型泵。螺旋流环形射流泵内具有更大的湍动能分布区域。随着工作压力升高, 两种结构的环形射流泵湍动能分布差别减小。导叶阻力对螺旋流环形射流泵的效率有着重要的影响。
- 环形射流泵 /
- 螺旋流 /
- 数值模拟 /
- 压力 /
- 速度 /
- 湍动能
Abstract: To improve the transport efficiency of the annular jet pump (AJP), a spiral flow annular jet pump (S-AJP) with guide vane structure to form a spiral flow was proposed in this paper. The numerical simulation was conducted to study the velocity, pressure and turbulent kinetic energy distribution of the S-AJP and the AJP under different working pressures, and the influence of spiral flow on the performance of the S-AJP is analyzed. The simulation results show that when the working pressure is 130 kPa, the spiral flow increases the flow ratio of the AJP by 43.1% and the pressure ratio decreases by 22.8%. The spiral flow reduces the static pressure in the throat of the S-AJP and causes cavitation more easily. The spiral flow makes the efficiency of the S-AJP higher than the AJP when the working pressure is lower than 160 kPa. Compared with the AJP, the S-AJP has a larger turbulent kinetic energy distribution area. As the working pressure increases, the difference of the turbulent kinetic energy distribution between the two structures of the AJP decreases. The resistance of guide vane has an important effect on the efficiency of the S-AJP.
- annular jet pump /
- spiral flow /
- numerical simulation /
- pressure /
- velocity /
- turbulent kinetic energy

HTML全文

图 1 螺旋流环形射流泵结构示意图

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图 2 导叶设计示意图

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图 3 网格划分

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图 4 原型泵监测点位置

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图 5 螺旋流环形射流泵与原型泵流量比对比

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图 6 螺旋流环形射流泵流量比增幅

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图 7 不同工作压力下螺旋流环形射流泵与原型泵的速度分布对比

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图 8 螺旋流环形射流泵的流线图

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图 9 螺旋流环形射流泵与原型泵压力比对比

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图 10 螺旋流环形射流泵压力比降幅

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图 11 不同工作压力下静压分布对比

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图 12 不同工作压力下轴线处压力系数分布

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图 13 螺旋流环形射流泵与原型泵效率对比

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图 14 螺旋流环形射流泵效率变化量

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图 15 不同工作压力下湍动能分布

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表 1 螺旋流环形射流泵结构参数

结构	尺寸
吸入管直径D_s/mm	32
工作管直径D_p/mm	38.6
喉管直径D_t/mm	24
出口管直径D_d/mm	44.8
收缩角α/(°)	40
扩散角β/(°)	6
导叶数S	4
导叶角度γ/(°)	75
导叶长度L/mm	100

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表 2 网格无关性检验(点A)

网格数	速度/(m·s^-1)	误差/%	压力/Pa	误差/%
966 516	1.693 039	-	74 918.3	-
1 103 020	1.773 392	4.70	74 805.23	-0.150
1 170 748	1.768 425	0.28	74 800.62	0.006
1 262 636	1.762 468	0.33	74 789.33	0.015

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表 3 网格无关性检验(点B)

网格数	速度/(m·s^-1)	误差/%	压力/Pa	误差/%
966 516	4.778 689	-	103 594.3	-
1 103 020	4.762 734	0.33	103 482.2	-0.100
1 170 748	4.757 817	0.10	103 452.1	-0.030
1 262 636	4.764 512	0.14	103 489.5	0.036

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表 4 网格无关性检验(点C)

网格数	速度/(m·s^-1)	误差/%	压力/Pa	误差/%
966 516	1.967 904	-	113 005.9	-
1 103 020	1.969 599	0.086	113 018.8	0.011 4
1 170 748	1.970 223	0.060	113 028.1	0.008 0
1 262 636	1.971 177	0.048	113 038	0.008 7

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参考文献(24)

[1]	刘冰, 韦尧尧, 赵振江, 等. 砂粒直径对射流泵性能影响规律[J]. 煤矿机械, 2021, 42(3): 53-56. doi: 10.13436/j.mkjx.202103016 LIU B, WEI Y Y, ZHAO Z J, et al. Influence law of sand particle diameter on performance of jet pump[J]. Coal Mine Machinery, 2021, 42(3): 53-56. (in Chinese) doi: 10.13436/j.mkjx.202103016
[2]	向清江, 何培杰, 陆宏圻. 射水抽气器最大吸气流量[J]. 农业机械学报, 2006, 37(3): 145-148. https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200603037.htm XIANG Q J, HE P J, LU H Q. Maximal flow rate of gas suction by water jet air ejector[J]. Transactions of the Chinese Society for Agricultural Machinery, 2006, 37(3): 145-148. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-NYJX200603037.htm
[3]	曾庆龙, 龙新平, 肖龙洲, 等. 环形射流泵结构优化设计[J]. 排灌机械工程学报, 2014, 32(2): 98-102. doi: 10.3969/j.issn.1674-8530.12.1217 ZENG Q L, LONG X P, XIAO L Z, et al. Structure optimization of annular jet pumps[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(2): 98-102. (in Chinese) doi: 10.3969/j.issn.1674-8530.12.1217
[4]	肖龙洲, 蔡标华, 胡洋. 不同吸入角度环形射流泵回流区域研究[J]. 流体机械, 2020, 48(2): 48-52. https://www.cnki.com.cn/Article/CJFDTOTAL-LTJX202002011.htm XIAO L Z, CAI B H, HU Y. Numerical investigation on the recirculation zone in annular jet pump at different angles of the suction chamber[J]. Fluid Machinery, 2020, 48(2): 48-52. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-LTJX202002011.htm
[5]	董星, 王瑞红. 水井钻机泵吸反循环钻进用泵的研究[J]. 矿山机械, 2002, 30(2): 13-14. http://www.cnki.com.cn/Article/CJFDTotal-KSJX200202006.htm DONG X, WANG R H. Research on pumps for drilling with pumping reverse circulation[J]. Mining & Processing Equipment, 2002, 30(2): 13-14. (in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-KSJX200202006.htm
[6]	龙新平, 邹佳林, 徐茂森, 等. 改进型环形射流泵输送不同果蔬试验[J]. 农业工程学报, 2017, 33(7): 36-42. LONG X P, ZOU J L, XU M S, et al. Experiment on using modified annular jet pump to deliver different fruits and vegetables[J]. Transactions of the Chinese Society of Agricultural Engineering, 2017, 33(7): 36-42. (in Chinese)
[7]	徐茂森, 龙新平, 祝叶, 等. 射流式马铃薯输送泵性能试验[J]. 农业工程学报, 2016, 32(11): 48-53. https://www.cnki.com.cn/Article/CJFDTOTAL-NYGU201611007.htm XU M S, LONG X P, ZHU Y, et al. Performance experiment of jet potato pump[J]. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(11): 48-53. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-NYGU201611007.htm
[8]	朱海燕, 邓金根, 何玉发, 等. 水力射流降低井底压差技术[J]. 中国石油大学学报(自然科学版), 2013, 37(2): 50-56. doi: 10.3969/j.issn.1673-5005.2013.02.008 ZHU H Y, DENG J G, HE Y F, et al. Reducing bottom-hole differential pressure by hydraulic jet[J]. Journal of China University of Petroleum, 2013, 37(2): 50-56. (in Chinese) doi: 10.3969/j.issn.1673-5005.2013.02.008
[9]	郭兰超. 环形射流泵在气田中提高气井携液能力的数值模拟分析[D]. 青岛: 山东科技大学, 2018. GUO L C. Numerical simulation of annular well jet pump enhancing gas well water carrying capacity in gas field[D]. Qingdao: Shandong University of Science and Technology, 2018. (in Chinese)
[10]	刘冰, 魏文强, 唐勇, 等. 煤层气井排煤粉环空射流泵的数值模拟[J]. 石油机械, 2014, 42(3): 80-83. doi: 10.3969/j.issn.1001-4578.2014.03.018 LIU B, WEI W Q, TANG Y, et al. Numerical simulation of annular jet pump for pulverized coal discharge in CBM well[J]. China Petroleum Machinery, 2014, 42(3): 80-83. (in Chinese) doi: 10.3969/j.issn.1001-4578.2014.03.018
[11]	马洪新, 李翔, 王磊, 等. 挖沟机抽吸扬泥系统设计与研究[C]//2014年第三届中国海洋工程学术年会论文集. 宁波: 中国造船工程学会, 2014: 362-369. MA H X, LI X, WANG L, et al. Design and research of pump system with mud suction for trencher[C]//Editorial Department of "China Shipbuilding", China Shipbuilding Engineering Society. Ocean Engineering Proceedings. Ningbo: Chinese Society of Shipbuilding Engineering, 2014: 362-369. (in Chinese)
[12]	徐茂森. 射流式鱼泵输送性能及鱼类损伤与行为研究[D]. 武汉: 武汉大学, 2018. XU M S. Investigation on transportation performance of jet fish pump and related injury and behavior of fish[D]. Wuhan: Wuhan University, 2018. (in Chinese)
[13]	刘永才, 程火金, 彭龙洲, 等. 大洋采矿射流泵扬矿系统计算机仿真计算[J]. 北京科技大学学报, 1996, 18(3): 259-262. http://www.cqvip.com/QK/90748X/199603/2387161.html LIU Y C, CHEN H J, PENG L Z, et al. Computer simulation on jet-pump lifting system of ocean mining[J]. Journal of University of Science and Technology Beijing, 1996, 18(3): 259-262. (in Chinese) http://www.cqvip.com/QK/90748X/199603/2387161.html
[14]	龙新平, 鄢恒飞, 张松艳, 等. 喉管长度对环形射流泵性能影响的数值模拟[J]. 排灌机械工程学报, 2010, 28(3): 198-201+206. https://www.cnki.com.cn/Article/CJFDTOTAL-PGJX201003005.htm LONG X P, YAN H F, ZHANG S Y, et al. Numerical simulation for influence of throat length on annular jet pump performance[J]. Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(3): 198-201+206. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-PGJX201003005.htm
[15]	XIAO L Z, LONG X P, YANG X L. Numerical investiga-tion on the influence of nozzle lip thickness on the flow field and performance of an annular jet pump[J]. Journal of Harbin Institute of Technology (New Series), 2014, 21(3): 59-67.
[16]	肖龙洲, 龙新平. 吸入室角度对环形射流泵空化性能的影响[J]. 浙江大学学报(工学版), 2015, 49(1): 123-129. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC201501024.htm XIAO L Z, LONG X P. Influence of inclined angle on cavitation performance of annular jet pump[J]. Journal of Zhejiang University (Engineering Science), 2015, 49(1): 123-129. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC201501024.htm
[17]	XIAO L Z, LONG X P, LI X H, et al. Numerical investigation on the recirculation in annular jet pumps[J]. Journal of Mechanical Science and Technology, 2013, 27(6): 1603-1609. doi: 10.1007/s12206-013-0406-2
[18]	徐茂森, 龙新平, 杨雪龙, 等. 喷嘴位置对新型环形射流泵性能的影响[J]. 排灌机械工程学报, 2014, 32(7): 563-566+582. https://d.wanfangdata.com.cn/conference/8185216 XU M S, LONG X P, YANG X L, et al. Effects of nozzle location on new type annular jet pump performance[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(7): 563-566+582. (in Chinese) https://d.wanfangdata.com.cn/conference/8185216
[19]	邓晓刚, 张贤明. 环形水气自振射流泵基本性能及频率数值分析[J]. 机械科学与技术, 2014, 33(5): 741-745. https://www.cnki.com.cn/Article/CJFDTOTAL-JXKX201405023.htm DENG X G, ZHANG X M. Numerical analysis of the characteristics and frequency of the annular water-air self-excited oscillation jet pump[J]. Mechanical Science and Technology for Aerospace Engineering, 2014, 33(5): 741-745. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXKX201405023.htm
[20]	邓晓刚, 曹柳. 环形水气自激振荡射流泵提高传能效率分析与计算[J]. 机械科学与技术, 2018, 37(3): 396-401. https://www.cnki.com.cn/Article/CJFDTOTAL-JXKX201803012.htm DENG X G, CAO L. Analysis and numerical simulation of entrainment efficiency in annular water-air self-oscillating jet pump[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(3): 396-401. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXKX201803012.htm
[21]	WANG X D, CHEN Y L, LI M Q, et al. Numerical study on the working performance of a streamlined annular jet pump[J]. Energies, 2020, 13(17): 4411.
[22]	韩喜俊. 局部起旋装置流场特性及能耗效率研究[D]. 太原: 太原理工大学, 2004. HAN X J. Research on the characteristics of flow field, energy consumption and effectiveness of the local generator[D]. Taiyuan: Taiyuan University of Technology, 2004. (in Chinese)
[23]	张土乔, 马健, 蔡钦, 等. 浅水环境中垂向圆形纯射流的数值模拟[J]. 浙江大学学报(工学版), 2006, 40(12): 2163-2167. https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC200612030.htm ZHANG S Q, MA J, CAI Q, et al. Simulation of vertical round turbulent jets in shallow water[J]. Journal of Zhejiang University (Engineering Science), 2006, 40(12): 2163-2167. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC200612030.htm
[24]	杨雪龙. 环形射流泵内部流动机理及结构优化研究[D]. 武汉: 武汉大学, 2014. YANG X L. Research on the flow mechanism and structure optimization of annular jet pumps[D]. Wuhan: Wuhan University, 2014. (in Chinese)