摘要
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
出处
《流体机械》
CSCD
北大核心
2008年第3期5-10,共6页
Fluid Machinery
