層流平板境界層内の油点速度と摩擦力の関係について

概要

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Oil dots on a solid body within flow field move under the action of skin friction, gravity, pressure, etc. If the accurate relationship of oil dot velocity and local skin friction is obtained, we can easily measure local skin frictions of any type of surface of body including propeller blades and membrane wings whose skin frictions are difficult to be measured by conventional methods. The paper studies correlation between oil dot velocity and local skin friction of flat plate laminar boundary layer experimentally. Movements of oil dots of silicone oil on a flat plate located in a wind tunnel were recorded by VTR camera. Experimental results confirm the linear correlation of oil dot velocity and local skin friction for each oil dot, but the correlation is much different between the oil dots. The difference is considered to be resulted from the initial conditions of oil dots, so it is concluded there is enough possibility of measurement of skin friction by tracking oil dot movements.
社団法人日本船舶海洋工学会の論文
1993-03-29