方案摘要
方案下载应用领域 | 其他 |
检测样本 | 其他 |
检测项目 | |
参考标准 | 暂无 |
The unsteady lift generated by the flow of turbulence over the trailing edge of an airfoil can be an effective source of dipole sound. The objective of the present research was to experimentally measure the velocity field behind an asymmetric 45 degree beveled trailing edge in order to develop an understanding of the flow mechanisms responsible for the generation of trailing edge noise. Particle Image Velocimetry (PIV) data were acquired in the near wake region of the trailing edge at a chord Reynolds number of 1.9x106. The time averaged velocity statistics are indicative of a wake flow containing semi-periodic vortex shedding. These large scale shedding motions are commonly responsible for the tonal noise produced by the trailing edge. A phase average decomposition of the velocity field with respect to this shedding process was utilized to separate the small scale turbulent motions responsible for broadband sound production. This analysis has shown that the characteristics of the small scale turbulence are dependent on the phase of the vortex shedding process.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
相关产品
汽车光学检测系统AIS
PT403型波长可调谐皮秒激光器
ANL系列高能量高重复频率DPSS纳秒激光器
APL4206 系列高能量皮秒激光放大器
UltraFlux FF/FT 5000 高能量可调谐飞秒激光器系统
UltraFlux FT300型波长可调谐飞秒激光器系统
Ekspla 超高功率激光器系统SYLOS 2A
LaVision PTUx 可编程时间控制单元
LaVision 用于粒子成像测速PIV的相机
LaVision StrainMaser 全场应变测试系统组件
LaVision 用于数字图像相关DIC的相机
LaVision StrainMaster 数字图像相关分析软件包
LaVision 标定板
LaVision StrainMaster 形变应变成像测量系统
LaVision StrainMaster DVC 体视全场应变测量系统
关注
拨打电话
留言咨询