船舶摩擦抵抗に就ての一考察

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By the analysis of the past towing experimental results with the smooth flat plates and the actual ships, the formula (1) is obtained as the equation for the calculation of the frictional resistance of the ship and the formula (2) for the model ; and it is found that the tota1 resistance of the ships, estimated by the Froude's method, using the formula (1), (2) and the model tests, are in excellent agreement with the thrust measurement trial results and the towing experimental results of the actual ships. (1) C_∫=0.00235+0.165/R^<0.3125>(2) C_∫=0.00235+0.165/R^<0.3125>-1600/R where C_∫ : Mean frictional resistance coefficient : F/1/2ρAV^2 R : Reynolds' number : VL/v. F : Frictional resistance in pounds. L : Length of ship in feet. V : Speed of ship in feet per second. A : Area of wetted surface in square feet. p : Density of water in pounds×second^2×feet^<-4>. v : Coefficient of kinematio viscosity in feet^2 per second.
社団法人日本船舶海洋工学会の論文
1936-08-20