用于研究湍流的层析粒子成像测速(Tomo-PIV)的开发

2019/07/09   下载量: 2

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应用领域 航空航天
检测样本 航空
检测项目
参考标准 暂无

利用德国LaVision公司的由ImagerProX4M相机和DaVis8.2软件平台构成的层析PIV系统,对湍流的流场结构进行了实验研究。

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This research dissertation focuses on the developments of tomographic PIV (tomo-PIV)
for the measurement of turbulent flows (Elsinga et al. 2006). It is based on the
tomographic reconstruction of a volumic intensity distribution of tracer particles from
projections recorded on cameras. The corresponding volumic distributions are correlated
to obtain 3D displacement fields. The present work surveys the state of advancement of
the research conducted on this technique and the main issues it has been confronted with
so far. The main research focus was on tomographic reconstruction. Indeed, its main
limitation is the appearance of ghost particles, ie reconstruction noise, which occurs
when high tracer concentrations are required for high spatial resolution measurements.

上一篇 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
下一篇 用组合粒子图像PIV和跟踪测速PTV技术研究砂砾动力学

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