2023 年 23 巻 3 号 p. 208-213
In order to improve the effects of an energy-saving duct installed in front of a propeller of a ship, a measurement system of the flow inside the duct is to be developed. For that purpose in a ship model basin the transparent material close to the refractive index of water is required. In this study, a measurement of a flow field behind a model made by a transparent material, CYTOP, has been carried out by PIV system. From the test in a small circulating water tank, it is found that the flow field measured by the model of CYTOP can be measured for the mainstream velocity with difference of 2.5% or less. From the study CYTOP is one of the promising materials for using the flow field measurement by the refractive index matching method in a ship model basin.