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FLOW CHARACTERISTICS IN ENERGY DISSIPATION UNITS OF LABYRINTH PATH IN THE DRIP IRRIGATION EMITTERS WITH DPIV TECHNOLOGY
Authors:LIU Hai-sheng  LI Yun-kai College of Water Conservancy  Civil Engineering  China Agricultural University  Beijing  China LIU Yan-zheng Beijing Vocational College of Agriculture  Beijing  China YANG Pei-ling  REN Shu-mei College of Water Conservancy  Civil Engineering  China WEI Run-jie Beijing Lifangti  i Sci-Tech Development Limited Company  Beijing  China XU Hong-bing R  D Center for Plastic Manufacturing  Beijing Chemical Engineering Resear
Affiliation:[1]College of water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China [2]Beijing Vocational College of Agriculture, Beijing 102442, China [3]College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China [4]Beijing Lifangtiandi Sci-Tech Development Limited Company, Beijing 100089, China [5]R and D Center for Plastic Manufacturing, Beijing Chemical Engineering Research Institute, Beijing 100013, China
Abstract:The energy dissipation mechanism and anti-clogging properties of drip irrigation emitters are closely related to flow characteristics of the fluid in its flow paths,and flow field tests using modern flow visual technologies were carried out by a large number of designers.The Digital Particle ImageVelocimetry(DPIV) system was built for un-disturbed flow tests in the labyrinth path.In this article,the flow field was measured in the flow path section,the structural unit and the local region near sawtooth.Under...
Keywords:drip irrigation emitter  labyrinth path  Particle Image Velocimetry (PIV)  flow characteristics  energy dissipation
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