Experimental Study on Spray Shape, Spray Drag and Flow Field of Surface-Piercing Vertical Strut Advancing at High Speed

概要

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In order to understand the nature and flow structure of the spray, some experiments of strut with circular arc cross section are performed in a towing tank. Measurement of the spray is not so easy as that of flow field around a ship model because of its delicate and unsteady nature. As touch sensors are not applicable for the measurement of spray, an image processing technique using LASER is applied in the present study. The shape of the spray and the velocity on the spray surface are measured as well as the wave height in the near field of the strut. Based on the measurement of mass flux and impulsive pressure of the spray distributed in a vertical cross section behind the strut, a spray drag due to the momentum loss is estimated and discussed. Results of some theoretical calculations are compared with the measurements.
独立行政法人海上技術安全研究所の論文
1993-11-30