A study of high efficiency wing considering its transient fluid-dynamic characteristics

本文对提高船舶舵、鳍等机翼在过渡状态下的性能进行了基础性研究。通过在机翼上增加驼峰或附加部件来提高机翼的定常性能，研究了过渡状态下机翼的性能以及这些部件对机翼性能的影响。在实验测量中，已经测量了作用于在水流中运动的机翼上的力。本文还对类似条件下的机翼绕流进行了数值模拟。在此基础上，研究了机翼性能的变化及其影响因素。

A fundamental study to enhance performance of a wing under transitional condition, such as a rudder or a fin of a ship, has been conducted. By applying humps or some additional parts on wing, which enhance the wing performance in steady state, wing performance under transitional conditions and its variation given by the parts on the wing have been investigated. Forces acting on a wing that moved in a water flow have been measured in experimental measurements. Numerical simulations of flow around a wing in the similar conditions have also been conducted. Based on these results, variations of wing performance and their elements have been investigated.