| 机翼湍流尾流Tr-PIV测量分析 |
| |
| 引用本文： | 翟树成,张军,洪方文,赵峰.机翼湍流尾流Tr-PIV测量分析[J].舰船科学技术,2011,33(2). |
| |
| 作者姓名： | 翟树成 张军 洪方文 赵峰 |
| |
| 作者单位： | 中国船舶科学研究中心,江苏无锡,214082 |
| |
| 摘 要： | 采用Tr-PIV(Time-resolved Particle Image Velocimetry)技术对机翼湍流尾流场的非定常现象进行了测量分析。试验获得了流场瞬时速度场的基本结构演化、流场的湍流强度分布、涡量场、雷诺应力场以及湍流空间相关系数;通过功率谱分析对速度场进行了相位分解,获取了相位平均下的湍流积分尺度。基于泰勒冻结假设及采用以时代空的方法获得了湍流时间积分尺度,同时直接采用速度场空间相关方法获得湍流空间积分尺度,并对二者作了比较分析,讨论了该假设的适用性。
|
| 关 键 词： | Tr-PIV 机翼 湍流流场 相关分析 |
Measurement and analysis of turbulent flow behind airfoil by Tr-PIV |
| |
| ZHAI Shu-cheng,ZHANG Jun,HONG Fang-wen,ZHAO Feng.Measurement and analysis of turbulent flow behind airfoil by Tr-PIV[J].Ship Science and Technology,2011,33(2). |
| |
| Authors: | ZHAI Shu-cheng ZHANG Jun HONG Fang-wen ZHAO Feng |
| |
| Institution: | ZHAI Shu-cheng,ZHANG Jun,HONG Fang-wen,ZHAO Feng(China Ship Scientific Research Center,Wuxi214082,China) |
| |
| Abstract: | The measurement and analysis of unsteady flow field behind a airfoil is done by TR-PIV.The based structure of instant flow field is presented and the turblence intensity,reynolds stress field and turbulent correlation coefficient for turbulent field were also acquired.A phase averaged decomposition of the velocity field by the analysis of auto-power spectrum was utilized to calculate the phase averaged turbulent length scale.Comparing the turbulent correlation length scale applying the Taylor hypothesis and... |
| |
| Keywords: | Tr-PIV foil turbulent flow correlation analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
