二次元物体に対する局部表面摩擦の直接測定

概要

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In order to measure the local skin friction of a two-dimensional body we made a friction measuring balance. The balance is connected with a surface element which moves by the tangential force acting on it. The element is made flush with the surface of the body set in the circulating water channel. Measurements of skin friction were carried out for two conditions-one with a tripping wire set near the leading edge of the body, and the other without it. In the case with a tripping wire, the values measured by the balance indicate those of turbulent skin friction througout the whole surface. In the other case the values thus obtained give those of laminar skin friction over the accelerating region. These experimental results are in good agreement with the calculated values. The form factor for the frictional resitance of the body is 0.09 from experiments and 0.11 from calculations.
社団法人日本船舶海洋工学会の論文
1969-07-30