排灌机械工程学报Issue(1)：66-71,6.DOI:10.3969/j.issn.1674-8530.12.0110
施肥泵活塞关键结构参数对性能影响的数值模拟
Numerical simulation of effects of piston key structural parameters on performance of jet fertilizer pump
摘要
Abstract
According to the problems in the existing jet fertilizer pumps,a new type of the pump was proposed and its 3D solid model was generated in Pro/E software,the flow in it was simulated by using CFD software-Fluent.An orthogonal experimental design with 4 factors each at 4 levels was applied in the new fertilizer pump,the 4 factors include 3 key structural parameters of the piston and driving pres-sure for the pump,and the observed performance indexes are the averaged piston moving velocity and switching frequency.The internal flow field and piston moving process were analyzed by means of veloci-ty contours at a series of typical instances during the discharging period of the piston.The effects of those parameters on the two observed indexes were evaluated by using the range analysis and variance a-nalysis.The results show that the driving pressure and piston stroke can significantly affect the averaged piston moving velocity and switching frequency.The averaged piston moving velocity and switching fre-quency have been correlated to those four parameters with a stronger linear dependence by using the mul-tivariable method.These linear multivariable regression models can provide a theoretical basis for the structural design and quantitative analysis in the design of jet fertilization pumps.关键词
施肥泵/活塞/正交试验/数值模拟/多元回归方法Key words
fertilizer pump/piston/orthogonal experiment/numerical simulation/multivariable method分类
农业科技引用本文复制引用
王新坤,夏立平,高世凯,许鹏..施肥泵活塞关键结构参数对性能影响的数值模拟[J].排灌机械工程学报,2014,(1):66-71,6.基金项目
国家863计划项目（2011AA100506）；农业科技成果转化资金资助项目 （）
