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Cavitation Tunnel Tests For Propeller Noise of a FRV and Comparisons with Full-Scale Measurements

机译:空化隧道测试FRV的螺旋桨噪声和与全尺寸测量的比较

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摘要

This study presents the results of cavitation tunnel tests carried out with model propeller of a Fisheries Research Vessel (FRV) and those of noise measurements with its full-scale propeller to validate the low-noise performance of this propeller. The tests involve the simulation of a target wake using a wake screen and the determination of the nature and extent of the observed cavitation behind the simulated wake. The measurements for the noise levels of the model propeller and their analyses are also part of the study. The net noise levels of the model propeller are extrapolated to full-scale using the scaling law recommended by the 18th ITTC Cavitation Committee. The extrapolated results are compared with the criteria recommended by the International Council for the Extrapolation of the Sea (ICES) as well as against the full-scale measurements carried out with this vessel in Japan.
机译:这项研究介绍了用渔业研究船(FRV)的模型螺旋桨进行的气穴试验的结果,以及使用其满量程螺旋桨进行的噪声测量的结果,以验证该螺旋桨的低噪声性能。这些测试包括使用尾流屏幕对目标尾流进行模拟,并确定模拟尾流后观察到的空化的性质和程度。模型螺旋桨噪声水平的测量及其分析也是研究的一部分。使用第18届ITTC空化委员会建议的比例定律,将模型螺旋桨的净噪声水平外推至满量程。将推断的结果与国际海洋推断理事会(ICES)推荐的标准进行比较,并与在日本使用该船进行的满量程测量进行比较。

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