单翼迷宫灌水器进口流场数值模拟与结构优化

doi:10.3969／j.issn.1674—8530.2009.01.014

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (266 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Through the survey about the clog for using emitters,it is found that clog happens in the inlets and their neighboring regions.From the investigation about the structure characteristic,the hydraulic performance analysis and numerical simulation of the internal flow field for the inlet of single wing labyrinth drip irrigation emitter,which are extensively used now,we conclude that there are disadvantages in the design of the emitter multi-inlets safety control,filtration,anti-clogging functions and so on.CAD is used to modify the structure and size.CFD is used to optimize hydraulic performances of single wing labyrinth drip irrigation emitters.It is found that there is a similar flow rate among the five inlets,and well-proportioned flow velocity distribution in the inlets.As a result,there is no ultra-low velocity region,the sediment of the inlets region is reduced,the anti-clogging ability of the emitter is improved,and the safeguard function of the multi-inlets is realized.

Key words： inlet of drip irrigation emitter hydraulic performance numerical calculation structural optimization CFD

Received: 17 June 2008 Published: 30 January 2009

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Xin-Kun
	Li-Ya-Fei

Cite this article:

WANG Xin-Kun,Li-Ya-Fei. Numerical calculation and structural optimization for inlet flow field of single wing labyrinth drip irrigation emitter[J]. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(1): 60-63.

URL:

http://zzs.ujs.edu.cn/pgjx/EN/10.3969／j.issn.1674—8530.2009.01.014 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2009/V27/I1/60

[1]Madramootoo C A,Khatri K C,Rigby M.Hydraulic performances of five different trickle irrigation emitters[J].Canadian Agricultural Engineering,1988,30(1):1-4.

[2]Yildirim G,Agiralioglu N.Linear solution for hydraulic analysis of tapered micro-irrigation laterals[J].Journal of Irrigation and Drainage Engineering,2004,130(1):78-87.

[3]张新燕,陈凤,李华莹.单翼迷宫贴壁式滴灌带水力性能初步试验研究[J].干旱地区农业研究,2004,22(4):225-228.Zhang Xinyan,Chen Feng,Li Huaying.The Research of the hydraulic properties in drip irrigation tape resisting blockage[J].Agricultural Research in the Arid Areas,2004,22(4):225-228.(in Chinese)

[4]王建东,李光永,邱象玉,等.流道结构形式对滴头水力性能影响的试验研究[J].农业工程学报,2005,21 (增刊):100-103.Wang Jiandong,Li Guangyong,Qiu Xiangyu,et al.Effects of flow passage forms on hydraulic performance of emitters[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21 (s1):100-103.(in Chinese)

[5]李永欣,李光永,邱象玉,等.迷宫滴头水力特性的计算流体动力学模拟[J].农业工程学报,2005,21(3):12-16.Li Yongxin,Li Guangyong,Qiu Xiangyu,et al.Mode-ling of hydraulic characteristics through labyrinth emitter in drip irrigation using computational fluid dynamics[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21 (3):12-16.(in Chinese)

[6]闫大壮,杨培岭,任树梅.滴头流道中颗粒物质运移动态分析与CFD 模拟[J].农业机械学报,2007,38(6):71-74.Yan Dazhuang,Yang Peiling,Ren Shumei.Study on dynamic analysis of particle movement in drip emitter based on CFD[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(6):71-74.(in Chinese)

[7]李云开.滴头分形流道设计及其流动特性的试验研究与数值模拟[D].北京:中国农业大学水利与土木工程学院,2005.

[8]魏正英,赵万华,唐一平,等.滴灌灌水器迷宫流道主航道抗堵设计方法研究[J].农业工程学报,2005,21 (6):1-7.Wei Zhengying,Zhao Wanhua,Tang Yiping,et al.Anti-clogging design method for the labyrinth channels of drip irrigation emitters[J].Transactions of the Chinese Society of Agricultural Engineering,2005,21 (6):1-7.(in Chinese)

[9]Nilsson H,Davidson L.Validations of CFD against detailed velocity and pressure measurements in water turbine runner flow[J].International Journal for Numerical Methods in Fluids,2003,41:863-879.

[10]Palau S G,Arviza V J,Bralts V F.Hydraulic flow behaviour through an in-line emitter labyrinth using CFD techniques[C].ASAE/CSAE Annual International Mee-ting.Ottawa:[s.n.],2004.

[11]Palau S G,González A P,Arviza V J.Numerical mo-deling of cavitating flows for simple geometries using FLUENT V6.1[J].Spanish Journal of Agricultural Research,2007,5(4):460-469.

[12]石祥钟,于佐东,肖英奎.水力机械CAD-CFD系统设计方法[J].农业与技术,2005,25(3):142-144.Shi Xiangzhong,Yu Zuodong,Xiao Yingkui.The CAD-CFD system design method for hydro-machine[J].Agriculture & Technology,2005,25(3):142-144.(in Chinese)

[13]任涛,闫永强,梁武科.CFD技术在离心泵优化设计中的应用[J].排灌机械,2007,25(1):26-28.Ren Tao,Yan Yongqiang,Liang Wuke.Application of CFD to optimization design for centrifugal pump[J].Drainage and Irrigation Machinery,2007,25(1):26-28.(in Chinese)