円柱体および円筒体の付加質量

概要

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It is important to determine the added mass of objects to estimate the hydrodynamic force on floating fisheries banks. The following is a report on experimental results obtained for the added masses of cylinders and circular pipes which are limited in length. The apparatus used in this experiment is essentially a torsion pendulum which has been improved by the authors. The values of added masses are calculated from the difference between the periods of this pendulum in water and in air. By using a phosphore bronze plate to which strain gages were affixed for this pendulum, it was possible to pick up the torsion electrically and to put record into computer. In this way, the experiment was simplified and the treatment of the data was very efficient. Objects used in this experiment were cylinders varying in diameter and length and circular pipes varying in diameter, length, and thickness.We were able to determine the added masses of these objects.
日本水産學會の論文