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.
王新坤, 李亚飞. 单翼迷宫灌水器进口流场数值模拟与结构优化[J]. 排灌机械工程学报, 2009, 27(1): 60-63.
Wang Xinkun,Li Yafei. Numerical calculation and structural optimization for inlet flow field of single wing labyrinth drip irrigation emitter. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(1): 60-63.
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