プロペラの基礎理論III : discrete loading functionによるプロペラ揚力面の二つの解決

概要

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Two numerical methods are given for calculating the hydrodynamic forces acting on a screw propeller in both uniform and nonuniform flow. The principle and techniques follow lifting surface theory of wings using discrete loading functions. The methods are developed with the purpose of obtaining more accurate pressure distributions in the neighbourhood of leading-edge than others. One is doublet-lattice method and the other is quasi-finite-panel method. In the former Lan's theory is applied to the selections of both loading and upwash points. In the latter the radial pressure distribution is assumed to be stepwise constant while the distribution is assumed to be given by Birnbaum's elementary functions in chordwise. The hydrodynamic forces is evaluated by introducing leading-edge suction in relation to induced drag in the lifting-surface conception.
独立行政法人海上技術安全研究所の論文
1977-11-30