叠片式砂过滤器水力特性模拟计算(英文)  

Computational simulation of hydraulic characteristics for laminated sand filter

作　　者：肖新棉[1] 董文楚[2] 潘林[1] 余利锋[1] 

机构地区：[1]华中农业大学工程技术学院,武汉430070 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《农业工程学报》2008年第8期1-5,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：The fund subsidizing project of transformation for agricultural science and technology achievements(02EFN216800692)

摘　　要：针对微灌工程中灌水器堵塞的问题,通过大量的水力性能测试和反冲洗性能试验,探讨了叠片式砂过滤器当滤管直径一定时的最佳叠片数,提出叠片式砂过滤器的水力性能特性方程和过滤水头损失公式,试验证实所建立的叠片式砂过滤器的水头损失公式比原有经验公式的计算精度高,即在设计流速条件下误差仅为3.18%,为开发研究新型砂过滤器提供参考。Aiming at the problem of emitter jamming in micro-irrigation engineering, the optimal number of laminated sand filter was discussed with stated filter diameter, through abundant hydraulic characteristics tests and back flushing tests. Equations of hydraulic characteristics in sand filter lamination and formulas of filtrated head-loss are put forward in the study. The results of experiments show that the suggested formulas of filtrated head-loss are more precise than the former empirical formulas： the relative error is 3.18% with specified velocity. This study offers references for research and development of new types of sand filter.

关 键 词：微灌 砂过滤器 叠片 水力特性 

分 类 号：S275.5[农业科学—农业水土工程]