不均一流れにおける推進器の性能の計算

概要

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The characteristics of marine propellers are usually discussed under the assumption that the flow is uniform and parallel to the propeller axis. But the actual velocity field in which a propeller is working, has neither the same direction as the propeller axis, nor the homogeneous distribution of velocities on the disc area. And the effect of these asymmetry or nonhomogeneity are occasionally in question. Of these, the effects of oblique flow have been investigated considerably, but the effects of non-homogeneous flow have not been discussed. The author, calculating the characteristics of blade elements in a non-homogeneous flow and integrating these over the whole propeller under the reasonable assumptions, has gained the theoretical formulas on the characteristics of propeller in non-homogeneous flow. The coefficients of forces and moments are numerically calculated using the open-characteristics of series-model propellers and represented graphycally.
社団法人日本船舶海洋工学会の論文
1949-07-25