分叉角与回转半径对双向流道灌水器水力性能影响模拟研究

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原文链接

国家科技期刊平台
NETL
NSTL
万方数据
维普

中文摘要：为研究双向流道灌水器水力性能,将其结构单元作为研究对象,以分叉角和回转半径两个结构参数为影响因素,采用正交试验设计16种结构参数组合方案,利用计算流体动力学软件Ansysfluent对流道内部流体的流动状态进行数值模拟,通过量纲分析建立流道结构参数与流道单元局部水头损失的回归模型.结果表明:双向流道单元局部水头损失与分叉角、回转半径和流道流速有关,分叉角与局部水头损失呈负相关关系,回转半径和速度与局部水头损失呈正相关关系;当入口流速为固定值时,分叉角为32.4°、回转半径为1.72 mm,流道单元局部水头损失最大;当设置10个流道单元时,交叉排列方式组合的灌水器流态指数较优.

外文标题：Simulation study on influence of fork angle and turning radius on hydraulic performance of bidirectional channel emitter

外文摘要：In order to study the hydraulic performance of bidirectional channel emitter,its structural unit was taken as the research object,with two structural parameters,fork angle and turning radius were used as the influen-cing factors.The orthogonal experimental design method was used to design 16 kinds of structural parameter combi-nation schemes.The flow state of the fluid inside the flow channel was simulated by the computational fluid dynam-ics software Ansysfluent,and the regression model of the flow channel structure parameters and the local head loss of the flow channel unit was established by dimensional analysis.The results showed that the local head loss was re-lated to the fork angle,turning radius and flow velocity,the fork angle was negatively correlated with the local head loss,and the turning radius and flow velocity were positively correlated with local head loss.When the inlet flow ve-locity was fixed,the fork angle was 32.4° and the turning radius was 1.72 mm,the local loss of the runner unit was the largest.When 10 channel units were set,the flow index of the emitter with cross arrangement was better.

外文关键词：

drip irrigation emitterbidirectional flow channellocal head lossnumerical simulationdimen-sional analysis

作者：

王亚林、符剑平、吕从聪、钟韵、朱士江

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作者单位：

三峡大学水利与环境学院,湖北宜昌 443000

关键词：

滴灌灌水器双向流道局部水头损失数值模拟量纲分析

基金：

国家自然科学基金湖北省教育厅科学技术重点项目湖北省水利重点科研项目三峡库区地质灾害教育部重点实验室开放基金

项目编号：

52209164D20221206HBSLKY2021212022KDZ20

出版年：

2024

DOI：

10.7606/j.issn.1000-7601.2024.01.28

干旱地区农业研究

西北农林科技大学

干旱地区农业研究

CSTPCD北大核心

影响因子：1.021

ISSN：1000-7601

年,卷(期)：2024.42(1)

参考文献量17