基于涡流原理的新型挖藕喷头的流场研究  

Study on Flow Field of a New Digging Lotus Based on the Vortex Theory

作　　者：何竞飞[1,2] 陈建庚[1,2] 王艾伦[1,2] 张营营[1,2] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083 [2]中南大学机电工程学院,湖南长沙410083

出　　处：《计算机仿真》2015年第4期184-187,329,共5页Computer Simulation

基　　金：湖南省科技厅社会发展科技支撑计划项目(2013SK2010);发明专利:无损涡旋挖藕喷头(201410190175.3)

摘　　要：提出了一种新型的挖藕机喷头—旋流挖藕喷头。喷头的主要作用在于有效地弥补了传统挖藕机喷头在使用过程中的射流压力不足、不能达到理想冲击效果的问题。针对当前存在于挖藕机喷头上的射流压力损失严重的长期存在的难点技术,提出了旋流射流的方法,实现了减小挖藕机喷头射流流场中水环境围压对射流压力的衰减的作用,并对旋流射流进行原理上的分析,运用Fluent仿真软件对旋流射流流场进行仿真,通过控制变量的方法分析对比不同喷头结构参数得到的仿真结果,得出最佳压力分布效果。最后,得到最佳压力分布效果的挖藕喷头结构参数给出最优设计效果。In this paper, we propose a new type of digging lotus that swirl nozzle dig lotus, which can well make up for the problem of the lack of jet pressure and can not achieve the desired effect of the impact. For the serious losses of pressure of the jet nozzle currently exist in the lotus digging machine, this paper introduces the swirl jet method in which flow field can reduce the attenuation on the jet pressure by the flow field confining pressure. Firstly the theoretical analysis of swirl jet is made; then the Fluent simulation software is used to analyse flow field of the swirling jet. By the comparison of the simulation results of different nozzle structural by the method of control variables, the optimum pressure distribution results are obtained. Finally, according to the optimum pressure distribution results, the optimal parameters of the digging lotus nozzle are obtained.

关 键 词：涡流 挖藕喷头 流场 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]