滴灌梯形迷宫滴头流道水力性能的响应曲面法优化  

Optimization of hydraulic performance for drip irrigation trapezoidal labyrinth channel of emitter using response surface methodology

作　　者：刘春景[1,2] 唐敦兵[1] 郑加强[3] 周宏平[3] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]蚌埠学院机电系,蚌埠233030 [3]南京林业大学机电学院,南京210037

出　　处：《农业工程学报》2011年第2期46-51,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(50775111);安徽省高等学校优秀青年基金资助项目(2010SQRL117)

摘　　要：滴灌滴头水力性能优化是滴灌技术不断发展的需要。采用响应曲面法研究了梯形迷宫滴头流道的流道宽度、长度、深度、转角和流道单元数等5个关键参数对滴头水力性能(流态指数和流量系数)的影响与最佳水平。试验结果表明,所测试梯形迷宫滴头最优流道宽度、长度、深度、转角和流道单元数分别为1.55 mm、2.33 mm、1.55 mm、46.32°和20,优化后滴头的流态指数为0.4993、流量系数为0.4441,较优化前流态指数提高了5.624%,滴头水力性能得到了改善。The hydraulic performance of drip irrigation emitter was affected by five parameters,the width,length,depth,angle and unit number of the trapezoidal labyrinth channel.In order to investigate these parameters,three-level Box-Benhnken design was carried out.By solving the quadratic regression model equation using appropriate statistic methods,the optimum parameters were determined.The width,length,depth,angle and unit number were 1.55 mm,2.33 mm,1.55 mm,46.32° and 20,respectively.The flow index was 0.4993 and the flux coefficient was 0.4441.The hydraulic performance of drip irrigation emitter can be improved by 5.624% when optimum parameters were adopted.

关 键 词：灌溉 水力学 优化 响应曲面法 

分 类 号：S275.6[农业科学—农业水土工程]