太原理工大学学报Issue(4)：465-469,5.DOI:10.16355/j.cnki.issn1007-9432tyut.2015.04.021
流量对矩形迷宫灌水器旋涡的影响分析
The Effect of Flow on the Vortex of Rectangular Labyrinth Emitter
摘要
Abstract
Plugging in drip irrigation emitters directly influences the efficiency of the system , and even makes the system scrapped .Plugging mainly starts from the area of vortex ,so this paper uses the area of vortex as the research object .On the basis of the calculation software FLUENT and the model of k‐ε,the flow in rectangular labyrinth ,strength of vortex and pressure variation were analyzed ,and treated by TECPLOT and AUTOCAD .The results show that :1)The flow in rectangular labyrinth emitter is constituted by the main flow area with higher flow‐rate and closed area of vortex ;2)The area of vortex on one hand can enhance the efficiency and anti‐clogging ,on the other hand it can plug the emitter ;3)The flow variation has no effect on the flow in the area of vortex .There is a positive correlation between flow area of the vortex and strength of vortex .The position of central point deviates the boundary and goes dow nstream as the flow increases .T he maximum flow should be used in optimization of the area of vortex in channel .4)The pressure in the vortex decreases from the boundary to the center of vortex and is the lowest in the center of the vortex .The rate of pressure drop speeds up with the increase of the flow .关键词
迷宫灌水器/流场/堵塞/旋涡Key words
labyrinth emitter/flow field/plugging/vortex分类
农业科技引用本文复制引用
..流量对矩形迷宫灌水器旋涡的影响分析[J].太原理工大学学报,2015,(4):465-469,5.基金项目
国家自然科学基金项目地面灌溉技术参数优化研究 （）
