Abstract
3D velocity component of swirling flow behind a rod-like material with orientation and without orientation in a vertical pipe have been measured by stereoscopic-PIV. Four optical sensors are attached to the main vertical pipe in order to detect the orientation. As a result, in the case of rod-like material with orientation, the velocity of Y component turns to negative values from positive values as X direction increases. That is caused by a possibility that a large-scale swirl occurs by the vibration of a rod-like material. Z component has peak value near the oriented material. The value is decrease the peak moves to the pipe center as the horizontal position reaches the center. The turbulence level of Z component, at the lower side of a rod-like material is larger than the middle and upper sides. The influence of turbulence of Y component under a rod-like material.
