中文摘要：

利用2D-LDV设备,通过优化布置测试点,获得了均匀来流下螺旋桨尾流场三维流动数据。展示了宏观的流场动态以及微观的流动信息,如尾涡和梢涡在流场中的分布情况、尾涡部流动的剪切效应、梢涡部的绕流及流动分离状态。计算了水动力螺距角以及螺旋桨附着涡的总环量。试验显示了LDV技术在流动细节测试方面的优势,获得的定量信息可以为相关研究人员提供技术支持。

英文摘要：

Based on the characteristics of the propeller wake symmetry in circumferential direction,the circumferential ve-locity distribution of propeller wake in uniform flow is measured through 2D-LDV devices at two test points arranged on a cross-section behind the propeller at a circumferential interval of 90°.The shear effect of tail vortex flow,the flow around and the flow separation condition of the tip vortex are also obtained in order to show information of the dynamic macroscopic and microcosmic flow field.Finally,the hydrodynamic pitch angle and total attachment vortex circulation of the propeller are calculated and analyzed to get their space distribution.