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。
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.
出处
《空气动力学学报》
CSCD
北大核心
2014年第5期700-704,共5页
Acta Aerodynamica Sinica
基金
国家自然科学基金(51279182,51109185)
浙江省自然科学基金(LQ12E09001)
海洋工程国家重点实验室开放基金(1203)
科技部星火计划项目(2013GA700253)
浙江省科技厅中小企业工业设计项目(2013D40037)
关键词
螺旋桨尾流
流动分离
水动力螺距角
环量
LDV
LDV
propeller wake
flow separation
hydrodynamic pitch angle
total attachment vortex circulation
LDV
