摘要
Pressure-sensitive paint(PSP)is a global pressure measurement technique.Compared with pressure transducers,PSP has significant advantages such as high spatial resolution and a lack of contact when applied to fast-rotating blades.However,due to the limitations of other pressure measurement techniques,the validation of PSP measurements on fast-rotating blades is generally difficult.In this work,a comprehensive study including PSP measurement,force balance measurement,and simulation was conducted on a 1 m-diameter propeller at the China Aerodynamic Research and Development Center.First,our computational fluid dynamics(CFD)code was validated by comparing the calculated aerodynamic thrust with the results from force balance measurements.Then,the pressure distributions on the propeller blade obtained by PSP were carefully compared with the CFD results under different working conditions.The results of PSP measurements,force balance measurements,and CFD showed good agreement,and the PSP measurement errors were estimated to be less than 5% of the dynamic pressure at the blade tip.Finally,the variations in pressure distribution under different rotating speeds and free-stream velocities were discussed.
压敏涂料(PSP)是一种全局压力测量技术.与压力传感器相比,PSP具有空间分辨率高、非接触式测量等显著优点.然而,由于其他压力测量技术的限制,在快速旋转的叶片上验证PSP测量通常比较困难.本文在中国空气动力研究与发展中心对直径为1 m的螺旋桨进行了综合研究,包括PSP测量、气动力天平测量和数值模拟.首先通过将计算的气动拉力与天平测量结果进行比较来验证文章给出的数值模拟(CFD)算法.然后,将PSP测量得到的螺旋桨叶片上的压力分布与不同工况下的CFD结果进行比较.PSP测量、天平测量和CFD的结果显示出良好的一致性,PSP测量误差估计小于叶尖动压的5%.最后讨论了不同转速和来流速度下压力分布的变化.
作者
Chunhua Wei
Lingrui Jiao
Fan Tong
Zhengwu Chen
Yingzheng Liu
Di Peng
魏春华;焦灵睿;仝帆;陈正武;刘应征;彭迪(China Aerodynamic Research and Development Center,Mianyang 621000,China;Key Lab of Education Ministry for Power Machinery and Engineering,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Gas Turbine Research Institute,Shanghai Jiao Tong University,Shanghai 200240,China)
基金
supported by the Foundation of the State Key Laboratory of Aerodynamics(Grant No.SKLA2019040302)
the National Natural Science Foundation of China(Grant No.11872038).
