排灌机械工程学报2013，Vol.31Issue(8)：719-723,5.DOI:10.3969/j.issn.1674-8530.2013.08.013
微灌用网式过滤器数值模拟与结构优化
Numerical simulation and structural optimization of screen filter in micro-irrigation
摘要
Abstract
The research of micro-irrigation screen filter was mainly concentrated in hydraulic performance test.Computational fluid dynamics software Fluent 6.3 was adopted to simulate the flow and analyze the hydraulic performance of a 2 inches AZUD micro-irrigation screen filter.The screen was predigested as a porous media,and the models were built by 3D software Pro/E.Results show that the simulated results and experiment results agree well with each other.The maximum relative deviation was 8％,and averaged relative deviation was 4.4％.The filter internal flow distribution,the balance of screen velocity distribution and the filter life have been improved by optimizing inlet and outlet location,inlet and outlet angle and filter shapes under the same filter area and inlet diameter.Optimization results show that the head loss is reduced by 69％ and the maximum speed difference between both sides on screen filter surface is decreased from 1.0 m/s to 0.1 m/s.关键词
网式过滤器/多孔介质/水头损失/数值模拟/结构优化Key words
screen filter/ porous media/ head loss/numerical simulation/structural optimization分类
农业科技引用本文复制引用
王新坤,高世凯,夏立平,许鹏..微灌用网式过滤器数值模拟与结构优化[J].排灌机械工程学报,2013,31(8):719-723,5.基金项目
国家863计划项目(2011AA100506) （2011AA100506）
农业科技成果转化资金资助项目(2011GB2C100015) （2011GB2C100015）
