1. Measurement of Pressure distribution and cavity Shape on Conventional and Highly Skewed Propeller Model

概要

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This paper describes two kinds of highly advanced measurement techniques developed by Ship Research Institute recently and the measurement results by these techniques. One of them is the measurement of pressure distribution on the blades of propeller models working in uniform flow and non-uniform flow behind wire mesh screen under non-cavitating condition. The other is the measurement of cavity thickness distribution on the propeller, i.e. a conventional and a highly skewed propeller of the Seiun-maru, on which various full scale measurements had been conducted. Two measurements showed that a highly skewed propeller has different hydrodynamic characteristics from that of a conventional one not only on pressure distribution but also on cavity volume clearly. Concerning the pressure measurement, the wavy distributions were obtained especially at the suction side of a highly skewed propeller. On the other hand, the second derivatives on time of cavity volume measured at a highly skewed propeller were smaller than that at a conventional one. Those accurate measurements have provided a number of invaluable data to validate the numerical techniques on propeller and cavitation.
社団法人日本船舶海洋工学会の論文