Investigation on Components of Added Resistance in Short Waves
Investigation on Components of Added Resistance in Short Waves
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DOI：
10.2534/jjasnaoe.8.171
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
M. Kuroda;M. Tsujimoto;T. Fujiwara;S. Ohmatsu;K. Takagi
中科院分区：
文献类型：
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作者：
M. Kuroda;M. Tsujimoto;T. Fujiwara;S. Ohmatsu;K. Takagi
为了准确估计船舶在实际海况中的航速衰减，必须准确计算船舶在波浪中的附加阻力。特别是在短波中，附加阻力是导致大型船舶航速降低的主要因素之一。短波附加阻力的计算方法有多种。然而，这些方法被提出用于钝的和低速的船舶，例如，油轮，散货船等。这些方法给出与实验数据的较好的协议，高速船舶。为了改进估算方法，首先对吃水和频率的影响进行了数值研究。此后，进行了固定运动的墙侧模型实验。根据这些结果提出了一个新的公式，它给出了良好的协议与实验结果。
In order to estimate decrease of ship speed in actual seas, it is important to calculate added resistance in waves with accuracy. Especially added resistance in short waves is one of the predominant factors inducing the decrease of speed for a large ship in relation to wave spectrum. Various calculation methods have been proposed for the added resistance in short waves. However those methods are proposed for blunt and low-speed ships, for example, tanker, bulk carrier, etc. Those methods give poor agreement with experimental data for fine and high-speed ships. To improve the estimation method, firstly numerical investigation on the effect of draft and frequency was carried out. Thereafter experiments of wall-sided models with motion fixed were conducted. From these results a new formula is proposed, which gives good agreement with the experimental results.