排灌机械工程学报
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排灌机械工程学报  2018, Vol. 36 Issue (11): 1098-1103    DOI: 10.3969/j.issn.1674-8530.18.1246
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非对称结构文丘里施肥器数值模拟
王海涛, 王建东*, 杨彬, 莫彦
中国水利水电科学研究院水利研究所, 北京 100048
Numerical simulation of Venturi injector with non-axis-symmetric structure
WANG Haitao, WANG Jiandong*, YANG Bin, MO Yan
Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
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摘要 基于有关学者提出的非对称结构(偏心向上)文丘里施肥器结构参数和室内试验测试数据,采用CFD数值模拟方法,研究分析了非对称结构与对称结构文丘里施肥器在吸肥量、内部流体运动及空化等性能指标上存在差异的内在原因.结果表明:模拟结果与室内测试结果吻合,即相同吸肥量条件下,非对称结构文丘里施肥器较对称结构表现出明显降低能耗的优势,可减少25%~35%的压力损失;对称结构文丘里施肥器喉部负压呈环状分布于喉管四周,非对称结构施肥器负压则呈半环状,位于喉管下部,因而相应空化区域较小,同等压差损失下有利于提高吸肥量;非对称文丘里施肥器收缩段与扩散段在喉管上部流线过渡平滑,多方向速度碰撞少,能量损耗相对小,在扩散段产生的回旋区较小.
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王海涛
王建东*
杨彬
莫彦
关键词非对称结构   文丘里施肥器   数值模拟   吸肥量   空化     
Abstract: Based on the structural parameters of Venturi injector with non-axis-symmetric structure(eccentricity upward)proposed by some researchers and related laboratory measurement data, CFD numerical simulation method was used to analyze the reason why there were differences in performance variables such as fertilizer flow rate, internal flow field and cavitation parameter in the Venturi injectors with non-axis-symmetrical and axis-symmetrical structures. Results showed that the simulated performance agreed well with the laboratory test data. At the same fertilizer flow rate, the Venturi injector with non-axis-symmetric structure has a significantly lower energy loss compared with that with axis-symmetrical structure, especially the pressure loss could be reduced by(25-35)%. The negative pressure zone in the Venturi injector with axis-symmetrical structure is distributed around the throat, but in the injector with non-axis-symmetric structure, however, it is in the half ring, located in the lower part of the throat. As a result, the cavitation zone is smaller and beneficial to increase of suction flow rate under the same pressure difference. In the non-axis-symmetrical Venturi injector, the contraction and diffusion parts are connected smoothly in the upper part of throat, so that the collisions between fluid particles in various directions are little, the resulted energy loss is relatively small, and the reverse flow region in the diffuser is also in a small size.
Key wordsasymmetric structure   Venturi injector   numerical simulation   suction amount   cavitation   
收稿日期: 2018-05-28;
基金资助:

“十二五”国家科技支撑计划项目(2014BAD12B05);中国水科院基本科研业务费项目(ID0145B602017)

引用本文:   
王海涛,王建东*,杨彬等. 非对称结构文丘里施肥器数值模拟[J]. 排灌机械工程学报, 2018, 36(11): 1098-1103.
WANG Hai-Tao,WANG Jian-Dong-*,YANG Bin et al. Numerical simulation of Venturi injector with non-axis-symmetric structure[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(11): 1098-1103.
 
[1] 李光永. 世界微灌发展态势——第六次国际微灌大会综述与体会[J]. 节水灌溉, 2001(2): 24-27.
[2] LI Guangyong. The development trend of micro irrigation in the world—summary and experience of the sixth international micro irrigation conference[J]. Water saving irrigation, 2001(2):24-27.(in Chinese)
[3] 韩启彪,冯绍元,黄修桥,等. 我国节水灌溉施肥装置研究现状[J]. 节水灌溉, 2014(12):76-79,83.
[4] HAN Qibiao, FENG Shaoyuan, HUANG Xiuqiao, et al. Research on fertilizer injection units in saving-water irrigation in China[J]. Water saving irrigation, 2014(12):76-79,83.(in Chinese)
[5] 韩启彪,黄兴法,刘洪禄,等. 6种文丘里施肥器吸肥性能比较分析[J]. 农业机械学报, 2013,44(4):113-117,136.
HAN Qibiao, HUANG Xingfa, LIU Honglu, et al. Comparative analysis on fertilization performance of six Venturi injectors[J]. Transactions of the CSAM, 2013,44(4):113-117,136.(in Chinese)
[6] 孔令阳,范兴科. 文丘里施肥器吸肥性能试验研究[J]. 节水灌溉, 2013(7):4-6.
[7] KONG Lingyang, FAN Xingke. Experimental study on fertilizer suction performance of Venturi injector[J]. Water saving irrigation, 2013(7):4-6.(in Chinese)
[8] 王海涛, 陈晏育, 王建东,等. 微灌用文丘里施肥器综合性能试验研究[J]. 排灌机械工程学报, 2018, 36(4):340-346,353. 浏览
WANG Haitao, CHEN Yanyu, WANG Jiandong, et al. Experimental study on comprehensive working perfor-mance of Venturi injector[J]. Journal of drainage and irrigation machinery engineering, 2018,36(4):340-346,353.(in Chinese)
[9] 刘永华,沈明霞,蒋小平,等. 水肥一体化灌溉施肥机吸肥器结构优化与性能试验[J]. 农业机械学报, 2015,46(11): 76-81,48.
LIU Yonghua, SHEN Mingxia, JIANG Xiaoping, et al. Structure optimization of suction device and performance test of integrated water and fertilizer fertigation machine[J]. Transactions of the CSAM, 2015,46(11):76-81,48.(in Chinese)
[10] 严海军,陈燕,初晓一,等. 文丘里施肥器结构参数优化对吸肥性能的影响[J]. 排灌机械工程学报, 2013,31(2):162-166,179. 浏览
YAN Haijun, CHEN Yan, CHU Xiaoyi, et al. Influence of optimization of structural parameters on injection performance of Venturi injector[J]. Journal of drainage and irrigation machinery engineering, 2013,31(2):162-166,179.(in Chinese)
[11] 程千, 黄修桥, 李浩,等. 文丘里施肥器空化特性数值模拟[J]. 排灌机械工程学报, 2018,36(1):88-92. 浏览
CHENG Qian, HUANG Xiuqiao, LI Hao, et al. Numerical simulation of cavitation characteristics of Venturi injector[J]. Journal of drainage and irrigation machine-ry engineering, 2018,36(1):88-92.(in Chinese)
[12] 范兴科, 孔令阳. 滴灌系统中文丘里施肥器的选配方法[J]. 灌溉排水学报, 2014,33(1):26-29.
FANG Xingke, KONG Lingyang. The selection of Venturi injector in the drip irrigation system[J]. Journal of irrigation and drainage, 2014,33(1):26-29.(in Chinese)
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