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首页> 外文期刊>Journal of marine science and technology >Unsteady finite-depth effects during resistance tests on a ship model in a towing tank
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Unsteady finite-depth effects during resistance tests on a ship model in a towing tank

机译：在拖曳油箱中对船舶模型进行阻力测试期间的非恒定有限深度效应

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摘要

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.
机译：本文涵盖了Doctors等人研究的扩展。 （J Ship Res 52（4）：263-273，2008）关于在相对浅水的情况下对船模进行拖曳阻力试验的恒速阶段中波浪阻力的振荡。我们在这里证明了不稳定的影响非常明显，对于水深与模型长度之比为0.25的拖曳油箱，在典型比例的情况下，基本上不可能获得稳态阻力曲线。在接近单位深度弗劳德数的速度区域中，这种说法尤其正确。但是，从积极的方面来看，这里我们表明，当以一种通常的方式考虑形状因数时，非稳态线性化的波阻理论的应用可以很好地预测测得的总电阻。最后，提出了将结果简单地应用于拖运试验的计划和分析的应用。

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  • 来源
    《Journal of marine science and technology》 |2009年第3期|387-397|共11页
  • 作者

    Alexander H. Day; David Clelland; Lawrence J. Doctors;

  • 作者单位

    Department of Naval Architecture and Marine Engineering, The Universities of Glasgow and Strathclyde, Glasgow G4 OLZ, Scotland;

    Department of Naval Architecture and Marine Engineering, The Universities of Glasgow and Strathclyde, Glasgow G4 OLZ, Scotland;

    School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    unsteady wave resistance; towing tank; model tests; shallow water;

    机译：不稳定的波阻;牵引箱模型测试;浅水;

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