Unsteady finite-depth effects during resistance tests on a ship model in a towing tank

Unsteady finite-depth effects during resistance tests on a ship model in a towing tank
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拖曳水池中船模阻力测试过程中的非稳态有限深度效应

DOI:
10.1007/s00773-009-0057-2
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发表时间:
2009
影响因子:
2.6
通讯作者:
Day A
Day A
中科院分区:
工程技术4区
文献类型:
--
作者:
Day A

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本文涵盖了医生等人的研究的延伸。(J Ship Res 52(4):263-273,2008)关于在相对浅水的情况下在船模上的拖曳罐阻力测试的恒定速度阶段期间波浪阻力的振荡。我们在这里证明,非定常效应是非常突出的,而且在水深与模型长度之比为0.25的典型比例的拖曳水池中,基本上不可能获得稳态阻力曲线。这种说法在深度弗劳德数为1的速度区域中尤其正确。然而,在积极的一面,我们在这里表明,非定常线性波阻理论的应用提供了一个很好的预测测得的总阻力,当一个帐户的形状因子在通常的方式。最后,一个简单的应用程序的结果的规划和分析的拖曳水池试验。
This paper covers an extension of the study of Doctors et al. (J Ship Res 52(4):263–273, 2008) on oscillations in wave resistance during the constant-velocity phase of a towing-tank resistance test on a ship model to the case of relatively shallow water. We demonstrate here that the unsteady effects are very prominent and that it is essentially impossible to achieve a steady-state resistance curve in a towing tank of typical proportions for a water-depth-to-model-length ratio of 0.25. This statement is particularly true in the speed region near a depth Froude number of unity. However, on the positive side, we show here that an application of unsteady linearized wave-resistance theory provides an excellent prediction of the measured total resistance, when one accounts for the form factor in the usual manner. Finally, a simple application of the results to the planning and analysis of towing-tank tests is presented.
阻力、推进力和振动
DOI: --
发表时间: 1988
期刊:
影响因子: --
作者:
E. Lewis
通讯作者: E. Lewis
拖曳水池中船模阻力测试过程中的不稳定效应
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
L. Doctors;A. Day;D. Clelland
通讯作者: D. Clelland
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发表时间: 1964
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作者:
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通讯作者: J. Wehausen
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发表时间: 1934
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作者:
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通讯作者: W. Wigley
静水中不稳定运动的船波阻力理论
DOI: --
发表时间: 1970
期刊:
影响因子: --
作者:
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通讯作者: A. N. Shebalov