摘要
为了研究喷水推进器在来流含气条件下的空化特性,以轴流式喷水推进器为研究对象,通过CREO软件对喷水推进器过流部件和船底流体水域进行三维建模并装配,对其进行结构网格划分,应用计算流体力学软件CFX对喷水推进器在不同来流含气条件下的空化流场进行了定常和非定常数值计算,同时结合喷水推进器推力性能试验,对比分析了来流含气条件对喷水推进器空化特性的影响.计算结果表明,在来流含气条件下发生空化时,增加进口含气率在一定程度上可以提高喷水推进器抗空化性能并能减缓流场流动的不稳定性.
In order to study the cavitation characteristics of the water-jet propulsion under the condition of incoming flow containing air,we took the axial flow water-jet propulsion as the research object,and used the CREO to perform 3D modeling and assembling of the water-jet propulsion flow components and the ship bottom fluid water area.Combined with the thrust performance test of the water-jet propulsion,the structure grid of the water-jet was divided,and the computational fluid dynamics software CFX was used to conduct steady and abnormal cavitation flow fields of the water-jet propulsion under different air-containing conditions.The constant value was calculated,and the influence of the incoming air condition on the cavitation characteristics of the water-jet propulsion was compared and analyzed.The calculation results show that when cavitation occurs under the condition of incoming air,the increase in inlet air content can improve the anti-cavitation performance of the water jet to a certain extent and can reduce the flow instability of the flow field.
作者
潘中永
张帅
刘月伟
PAN Zhongyong;ZHANG Shuai;LIU Yuewei(National Research Center of Pumps,Jiangsu University,Zhenjiang 212013,China)
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2022年第3期18-25,共8页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(51879120)。
关键词
喷水推进器
气液两相流
空化
数值模拟
water-jet propulsion
gas-liquid two phase flow
cavitation
numerical simulation
