Derivation and application of hydraulic equation for variable-rate contour-controlled sprinklers

CORC > 水土保持研究所 > 中国科学院水利部水土保持研究所 > 水保所知识产出(1956-2013)

	Derivation and application of hydraulic equation for variable-rate contour-controlled sprinklers
	Han Wenting ; Wu Pute
刊名	AFRICAN JOURNAL OF BIOTECHNOLOGY
	2011
卷号	10 期号:79 页码:18214-18221
关键词	Variable-rate sprinkler precision irrigation contour-controlled wetted area irrigation uniformity square wetted area sprinkler hydraulic equation
英文摘要	The variable-rate contour-controlled sprinkler (VRCS) for precision irrigation can throw water on a given shaped area and the flow rate is also varied with the throw distance of the sprinkler for the purpose of high uniformity irrigation. Much of past research work were concentrated on the mechanical availability of variable-rate application and the design of VRCS main construction without considering the theoretical operation principles of VRCS. This study aimed to develop the mathematic models describing the relationship between hydraulic parameters of VRCS and these models will be the theoretical guidance for the design of VRCS. The hydraulic operational equation that describes the internal connection of flow rate, rotating speed and throw distance of VRCS was derived using mathematical theory of limitation and double integral. The derived operational equation indicates that the flow rate of VRCS is proportional to the product of rotating speed and square throw distance. The square wetted area sprinklers were used to illustrate the application of the operational equation of VRCS. The theoretical throw distance equation for the square wetted area sprinkler was built. With the operational equation and theoretical throw distance equation, the theoretical flow rate and rotating speed equations of the square wetted area sprinkler were derived. These results of this study provide fundamental principles for the design of VRCS.
收录类别	SCI
语种	英语
公开日期	2012-05-28
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/4661]
专题	水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式 GB/T 7714	Han Wenting,Wu Pute. Derivation and application of hydraulic equation for variable-rate contour-controlled sprinklers[J]. AFRICAN JOURNAL OF BIOTECHNOLOGY,2011,10(79):18214-18221.
APA	Han Wenting,&Wu Pute.(2011).Derivation and application of hydraulic equation for variable-rate contour-controlled sprinklers.AFRICAN JOURNAL OF BIOTECHNOLOGY,10(79),18214-18221.
MLA	Han Wenting,et al."Derivation and application of hydraulic equation for variable-rate contour-controlled sprinklers".AFRICAN JOURNAL OF BIOTECHNOLOGY 10.79(2011):18214-18221.