低レイノルズ数領域でのプロペラブレード表面の圧力とタフト測定に基づく流体解析

概要

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The influence of propeller blade wake is emphasized at the performance design of propeller. The propeller wakes mainly consist of the wing tip vortex generated at the tip of blade and the vortex sheet from the trailing edge of the blade, which describe the helix in the wake. The source of these wakes is the surface of the blade, so the conditions of the flow on the surface are largely concerned with formation of the wake and the performance of propeller. Then the propeller blade was made under the condition of low Reynolds number flow, and the flow on surface is studied by empirical means of direct pressure measurement and tuft method. An exist of separation flow was revealed by the pressure measurement and the appearance of the cross flow on the blade could be observed by tuft method.
2009-03-05