摘要
为研究并优化喷嘴的结构参数,结合离心式喷嘴的结构特点,在原有喷嘴结构的基础上增加旋流槽.利用VOF模型以及双方程湍流模型对原始结构喷嘴以及新增旋流槽结构的改进喷嘴,分别进行数值模拟.分析了两种喷嘴内部的液体流动特性及喷雾场中的喷雾特性和变化规律.结果表明,增加旋流槽结构能够有效减轻喷嘴内部出口处的涡流现象,降低喷嘴内压强;喷射液体的轴向速度减小,喷射束更发散,雾化锥角变大.
In order to study and optimize the nozzle structure parameters,combined with the structural characteristics of the centrifugal nozzle,swirl grooves were added on the original nozzle structure.The VOF model and realizable k-εmodel were used to simulate the nozzle with original structure and the improved nozzle with newly added swirl groove respectively.The liquid flow characteristics inside the two nozzles and the spray characteristics and changing laws in the spray field were analyzed.The results showed that the swirl grooves can effectively reduce the vortex phenomenon at the outlet inner the nozzle,the pressure inside the nozzle was reduced;the axial velocity of the ejected fluid decreases;the spray beam was more divergent and the spray cone angle was larger.
作者
杨玉昆
金向阳
白鹏程
施法
王莎莎
董子昂
林晶
王加国
YANG Yu-kun;JIN Xiang-yang;BAI Peng-cheng;SHI Fa;WANG Sha-sha;DONG Zi-ang;LIN Jing;WANG Jia-guo(College of Light Industry,Harbin University of Commerce,Harbin 150028,China;Fujian Provincial Key Laboratory of Virtual Manufacturing Technology,Quanzhou 362000,China;Heilongjiang QianSheng Ice and Snow Equipment Manufacturing Co.,Ltd.,Harbin 150028,China)
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2021年第6期724-730,共7页
Journal of Harbin University of Commerce：Natural Sciences Edition
基金
2020年度哈尔滨商业大学“青年创新人才”支持计划(No.2020CX54)
虚拟制造技术福建省高校重点实验室开放研究课题(No.Xnzz1902).
关键词
旋流槽
双方程湍流模型
VOF模型
雾化
优化设计
喷嘴
swirl grooves
two-equation turbulence model
VOF model
spray
optimization design
nozzle
