关键词：
迷宫灌水器;流道结构;漩涡;流态指数;水力性能
摘 要：
以矩形流道灌水器以及加齿后矩形流道模型为研究对象,借助CFD流体分析软件FLUENT对不同尺寸的流道模型进行压力流量模拟分析,将分析后的结果以流道内最小过流断面为控制因素,进一步利用TECPLOT软件分析灌水器内速度流场的变化。结果表明,单齿型矩形流道迷宫灌水器的水力性能优于矩形流道迷宫灌水器;在同一种尺寸的矩形流道内加齿,随着齿高的增加,流量系数和流态指数均减小;当流道内加齿处的过流断面比保持一致时,流道的流量系数随尺寸的增加而增大;并且流道尺寸越大,加齿后流态指数降低程度越大,越有利于提高灌水器的灌水质量;相比于矩形流道灌水器,单齿型矩形流道具有较好的消能效率,为进一步研制高水力性能的灌水器提供一定的理论基础。
译 名：
Numerical Analysis of Hydraulic Performance of Single Tooth Rectangular Labyrinth Emitter
作 者：
MA Yan-chao;LI Zhi-qin;JIN Long;WANG Chao;College of Water Conservancy Engineering,Taiyuan University of Technology;
关键词：
labyrinth emitter;;flow channel structure;;vortex;;flow index;;hydraulic performance
摘 要：
The rectangular channel emitters and the rectangular channel model with tooth added are chosen as study objects,and the pressure-flow relationship of the flow channel model with different dimensions is analyzed by means of CFD simulation by using the fluid analysis software FLUENT. Taking the minimum flow section as the control factor,the change of water velocity flow field in the emitter is further studied by using TECPLOT software. The results show that: the hydraulic performance of single-tooth labyrinth emitter rectangular channel is better than that of rectangular channel labyrinth emitter. Under the same size rectangular channel,the flow coefficient and flow exponent decrease after adding tooth height. When the flow area of the section where the flow channel adds tooth remains consistent,the flow coefficient of flow channel increases with the increase of size. Moreover,the larger the size of the flow channel after adding tooth,the greater the degree index decreased,which is beneficial to improve the quality of irrigation emitter. Compared with the rectangular channel emitters,the flow channel with adding tooth has better energy dissipation efficiency. The study result will provide theoretical basis for the further development of high hydraulic performance emitter.
