流体机械

2008, No.429(03) 5-10

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中空压力旋流喷嘴内流场特性研究
Research on the Inner Flow Field of a Hollow Cone Pressure Swirl Nozzle

王晓琦,尹俊连,张海平,仇性启
WANG Xiao-qi,YIN Jun-lian,ZHANG Hai-ping,QIU Xing-qi (China University of Petroleum

摘要(Abstract):

针对切向进液的压力旋流喷嘴,利用实验测量结合数值模拟的方法研究其内流场特性。采用高速摄像仪跟踪记录并测量内部空气心和外部雾化锥角大小;采用LDV激光测试系统测量出口速度场。由此对比验证了VOF多相流模型、RNGκ-ε湍流模型适用于此类旋流喷嘴数值模拟计算。随后分析得到喷嘴内部不同截面的压力场、密度场和速度场分布图;拟合准势流区和似固体区切向速度沿23mm截面半径变化关系式,所得结果对解释旋流喷嘴内部流场形态提供参考依据。
Computational fluid dynamics,high-speed camera and LDV System are combined to simulate and test the inner flow field of a hollow cone pressure swirl nozzle so as to verify Volume-of-Fluid simulation method on this type of nozzle.Moreover,the processed results show fields of pressure,density and velocity.Tangential velocities regression equations on areas of sub-potential flow and similar solid region are also matched.So the study offers meaningful reference for expressing inner flow situation of swirl nozzle

关键词(KeyWords): 旋流喷嘴;空气心;FLUENT
swirling nozzle;air core diameter;FLUENT

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作者(Author): 王晓琦,尹俊连,张海平,仇性启
WANG Xiao-qi,YIN Jun-lian,ZHANG Hai-ping,QIU Xing-qi (China University of Petroleum

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