波浪场中利用PIV装置研究杆件升力形成机理

Research on mechanism of bar lift force by using PIV system in wave field

利用全流场无扰动瞬时粒子成像测速方法 ( PIV) ,并通过测力传感器 ,对波浪场中的水平杆件受力及其周围流场进行了同步测量 .通过对杆件周围流场的同步资料分析 ,得出升力是由于杆件后尾流中涡的不对称释放引起的 ,有一定的规律性 ,同时又有着随机性 .

As for the horizontal bar lift and the surrounding current field in wave field, a PIV (particle image velocimetry) system method is introduced in synchro test. The synchronous data are analysed and discussed. It is identified that the lift force is caused by vox non symmetric release of the back flow of the bar, and the lift force has regularity and randomness. Combining the project the area is divided by the vox′s formation and drop.