Theory of non-linear wave forces acting on an offshore structure in a shallow water and comparison with experiments

浅水中海上结构的非线性波浪力理论及与实验的比较

基本信息

  • 批准号:
    12450406
  • 负责人:
  • 金额:
    $ 6.72万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2000
  • 资助国家:
    日本
  • 起止时间:
    2000 至 2002
  • 项目状态:
    已结题

项目摘要

Non-linear wave forces act essential role on non-linear responses of an offshore structure such as a tension leg platform. It has not been established yet to theoretically estimate them in case of higher than 3^<rd> order. It is mainly because of secular terms which appear in a free-surface condition in case of perturbation approach. Molin shown that numerical filtering is useful to avoid them, but his method cannot apply to the problem in case of shallow water. In this research we have formulated 3^<rd> order wave force acting on a circular cylinder in shallow water, and studied general mathematical behavior of the secular terms. Another important and interesting subject of a secular terms is a wave drift added mass, which is very important to estimate slow drift oscillation of a moored floating body in irregular waves, as well as a wave drift damping. We have formulated the problem by a perturbation method with two small parameters which are wave slope and motion frequency. Secular terms appear in the higher order problems, similarly to the 3^<rd> order wave force problem. We have firstly obtained radiation conditions to set unique solutions. The obtained solutions were compared with the measured date obtained by newly developed experimental set-up.
非线性波浪力对张力腿平台等海洋结构物的非线性响应起着至关重要的作用。在高于3阶的情况下,理论上估计它们还没有建立<rd>。这主要是因为在摄动法中,自由表面条件下出现了长期项。莫林表明,数值滤波是有用的,以避免他们,但他的方法不能适用于问题的情况下,浅水。本文建立了<rd>作用在浅水中圆柱上的三阶波浪力公式,并研究了长期项的一般数学行为。长期项的另一个重要和有趣的主题是波浪漂移附加质量,这对于估计系泊浮体在不规则波中的慢漂移振荡以及波浪漂移阻尼非常重要。我们已经制定了两个小参数,这是波的斜率和运动频率的摄动方法的问题。与3阶波浪力问题类似,高阶问题中也出现了长期<rd>项。我们首先得到了辐射条件,以设置唯一的解决方案。所得到的解决方案进行了比较,通过新开发的实验装置获得的测量数据。

项目成果

期刊论文数量(40)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Weiguang Bao (Ikou Sano) and Takeshi Kinoshita: "Wave-drift damping in slow surge-sway-yaw coupling motions of a cylinder array"Journal of Marine Science and Technology. (printing).
Weiguang Bao (Ikou Sano) 和 Takeshi Kinoshita:“圆柱体阵列的缓慢浪涌-摇摆-偏航耦合运动中的波漂移阻尼”海洋科学与技术杂志。
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KINOSHITA Takeshi其他文献

KINOSHITA Takeshi的其他文献

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{{ truncateString('KINOSHITA Takeshi', 18)}}的其他基金

Studies on the concept of green space and the method for sustainable area revitalization in the United Kingdom
英国绿色空间概念及可持续区域振兴方法研究
  • 批准号:
    23580032
  • 财政年份:
    2011
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Study on forecast and evading of Freak wave
畸形波预报与规避研究
  • 批准号:
    19106016
  • 财政年份:
    2007
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (S)
Bioprospecting targeted for domestic higher plant resource in search of anti-microbial chemical leads
针对国内高等植物资源进行生物勘探,寻找抗菌化学先导化合物
  • 批准号:
    15590022
  • 财政年份:
    2003
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
On secular terms which appear in perturbation problems of non-linear wave forces acting on offshore structures, and solutions of the problems compared with model tests
海上结构物非线性波浪力扰动问题中出现的长期项及其与模型试验的比较
  • 批准号:
    15360461
  • 财政年份:
    2003
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Ethnopharmacognosical Study on A Southeast Asian Aurantioideae Medicinal Plant Murraya paniculata: Correlation between Its Chemical Diversity and Medicinal Use in Traditional Medicine
东南亚橙科药用植物九里香的民族生药学研究:其化学多样性与传统医学用途的相关性
  • 批准号:
    12672064
  • 财政年份:
    2000
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Basic studies on possible application of anti-oxidative fraction and constituents of crude drug origin to preventive medicine
抗氧化部位及药材来源成分在预防医学中的可能应用基础研究
  • 批准号:
    10671998
  • 财政年份:
    1998
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Ethnobotanical survey in Philippine tropical rain forest : in search of new medicinal and useful gene resources
菲律宾热带雨林民族植物学调查:寻找新的药用和有用基因资源
  • 批准号:
    09041192
  • 财政年份:
    1997
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
Nonlinear hydrodynamic forces acting on an offshore structure n waves
波浪作用在海上结构上的非线性水动力
  • 批准号:
    07455401
  • 财政年份:
    1995
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
A New Approach to Synthesis of Isoflavonoids Having Boneresorption Activity
具有骨吸收活性的异黄酮类化合物的合成新方法
  • 批准号:
    05671767
  • 财政年份:
    1993
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Study on motions of a sailing boat
帆船运动的研究
  • 批准号:
    04452215
  • 财政年份:
    1992
  • 资助金额:
    $ 6.72万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)

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海上风机平台上的强非线性波浪力及Ringing响应的计算方法
  • 批准号:
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Inspection of the excessive revision of the auditory cortex on the ear ringing animal observed by optical recording
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嘶嘶的狗和鸣响的汽车——用一种新颖的图音干扰范式研究语言产生过程中的词汇处理
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    LP0454001
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    2004
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    $ 6.72万
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