Abstract
The fluctuating pressures were measured on a flat plate above the cavitating propeller and the behavior of unsteady cavity was observed in detail at the same time, in order to make clear what is essential to estimating the pressure signals in full scale from model experiments.As a result, the shape of pressure signals became very close to that in full scale when the pressure impulses induced by collapse of unsteady cavity were superposed on the fluctuating pressure. Accordingly, collapse of unsteady cavity should be taken into account in model experiments in order to simulate the fluctuating pressure in full scale. Further studies are necessary on simulation of collapse of unsteady cavity or simulation of flow field in full scale.
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