In ship-model extrapolation the frictional resistance of the ship surface is generally taken to be equal to that of the flat plate having the same length and area. Experiments carried out at several laboratories with models of different size show dearly that each model should have its own extrapolation curve. In spite of general agreement that this is so, the flat-plate extrapolation curve is still generally used. On the other hand it is not easy to derive mathematical relations for ship-form frictional resistance or to make extensive experiments for this purpose. It is obvious that a first step towards departing from the flat-plate resistance basis should be to study the effect of transverse curvature on frictional resistance.
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October 01 1959
The Axial Frictional Resistance of Long Cylinders in Turbulent Flow
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Karhan, K.. "The Axial Frictional Resistance of Long Cylinders in Turbulent Flow." J Ship Res 3 (1959): 24–28. doi: https://doi.org/10.5957/jsr.1922.214.171.124
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