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作 者:冯毅 詹明珠[3] 韦红刚 李平书 于海[1,2] FENG Yi;ZHAN Mingzhu;WEI Honggang;LI Pingshu;YU Hai(Shanghai Key Laboratory of Ship Engineering,Shanghai 20011,China;Marine Design and Research Institute of China,Shanghai 200011,China;Shanghai Merchant Ship Design&Research Institute,Shanghai 201203,China)
机构地区:[1]上海市船舶工程重点实验室,上海200011 [2]中国船舶及海洋工程设计研究院,上海200011 [3]上海船舶研究设计院,上海201203
出 处:《中国造船》2020年第S02期349-357,共9页Shipbuilding of China
摘 要:以轴支架双桨船型作为研究对象,使用CFD软件NUMECA\FineMarine计算不同尺度下的阻力和伴流,并分析了带轴支架船体阻力、波形和伴流的尺度效应。结果表明,基于CFD的方法,通过改变模型长度来研究带轴支架船体的尺度效应是可行的.由于附体局域雷诺数与船体雷诺数相差很大,当船体雷诺数大于10^(8)之后,附体阻力增量才基本稳定.无论是轴向伴流均值还是伴流峰幅值都随雷诺数的增加而降低,使得实船尾部的螺旋桨进速大于船模尺度下的进速.CFD software NUMECA\FineMarine was used to calculate the resistance and wake field at different scales of a twin-screw ship. Scale effect of the hull with shaft-brackets on the resistance, waveform and wake were analyzed. The results show that the CFD method is feasible to study the scale effect of the hull with shaft-brackets by changing the length of the model. Due to the great difference between the local Reynolds number of appendages and that of the hull, when the Reynolds number of the hull is greater than 10^(8), the resistance of the attached area is basically stable. Both the average value and the peak amplitude of the axial wake decrease with the increase of the Reynolds number, which makes the advance speed of the propeller at the stern of the ship greater than that of the ship model.
分 类 号:U661.1[交通运输工程—船舶及航道工程]
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