PIV MEASUREMENT OF TOTAL VELOCITY OF AN INFLOW AHEAD OF A ROTATING PROPELLER ATTACHED TO A SHIP MODEL

摘要

How to measure the full speed of the propeller flow inlet in accordance with one embodiment of the invention the propeller shaft and side by side , and setting a plurality of vertical cross-sectional view perpendicular to the surface of the water ; Comprising the steps of: illuminating each of the front vertical section of the inflow into the propeller plane the laser light; Each of the vertical section by a CCD camera acquiring the particle image; Extracting a velocity field in a vertical cross-section using the algorithm of the PIV particle image obtained cross-correlation method; And a step to a combination of the axial velocity component to get the full speed of the cross-section of FIG distribution obtained with respect to the respective longitudinal section .