Free Surface Effects on Viscous Hydrodynamic Forces Acting on Offshore Structure

自由表面对作用于海上结构的粘性水动力的影响

基本信息

  • 批准号:
    07455403
  • 负责人:
  • 金额:
    $ 4.67万
  • 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:
    1995
  • 资助国家:
    日本
  • 起止时间:
    1995 至 1996
  • 项目状态:
    已结题

项目摘要

We carried out the research project of the free surface effects on the viscous force acting on an off shore structure from July of 1995 to March of 1997. As the basic study for this topics we have carried out following theoretical and experimental studies.(1) A numerical study on the wave forces acting on a circular cylinder.(2) An experimental study on the viscous hydrodynamic forces acting ob a inclined circular cylinder.(3) An theoretical and experimental study on the viscous damping forces for the slow drift oscillation of a horizontal submerged cylinder.On the basis of these studies two application researches were carried out as follows ;(4) The field experiment and numerical prediction on dynamics of a floating structure moored in deep ocean.(5) An theoretical and experimental study on the thruster assisted mooring system controlled by H* controller.The main conclusions obtained from these researches are as floolws ;(1) The viscous wave forces obtained using the numerical simulat … More ion method developed in the research shows good agreements with experiments.(2) The viscous hydrodynamic force acting on an inclined circular cylinder does not depend on the inclined angle when the inclined angle is taken into consideration into the nondimension form.(3) The slow drift damping force acting on a circular cylinder obtained from two-harmonic oscillation tests coincides with that from forced oscillation tests in waves, but for a rectangular cylinder the latter one is larger than the former.(4) An estimation technique for the hydrodynamic forces on an offshore structure has been developed in this study, in which the interference effects and Reynolds effects are taken into consideration. Hydrodynamic forces of an offshore structure estimated using the method show good agreements with those obtained from total model tests.(5) Motions of an offshore structure predicted using the viscous hydrodynamic forces obtained on the basis of this study and linear theory agreed well with those measured in the field test.(6) The dynamic positioning system based on a mathematical model for motions developed in this study can control the displacement of an offshore structure very accurately. Less
我们于1995年7月至1997年3月进行了自由面对作用在一个离岸海岸结构上的粘性力的影响的研究项目。作为本课题的基础研究,我们开展了以下理论和实验研究。(1)作用在圆柱上波浪力的数值研究。(2)倾斜圆柱体粘性水动力的实验研究。(3)对水平圆柱体慢漂振动的粘性阻尼力进行了理论和实验研究,并在此基础上开展了以下两方面的应用研究:(4)深海系泊浮体动力学的现场实验和数值预报。(5)对H* 控制器控制的推力器辅助系泊系统进行了理论和实验研究,主要结论如下:(1)数值模拟得到的粘性波浪力与实验结果吻合较好, ...更多信息 本研究所建立的离子分析方法与实验结果吻合较好。(2)当倾斜角以无量纲形式考虑时,作用在倾斜圆柱上的粘性水动力与倾斜角无关。(3)由双谐振动试验得到的作用于圆柱的慢漂阻尼力与波浪中强迫振动试验得到的慢漂阻尼力一致,但对于矩形柱,后者大于前者。(4)本研究发展了一种海洋结构物上的水动力估算方法,其中考虑了干扰效应和雷诺效应。用该方法估算的海洋结构物水动力与全模型试验结果吻合较好。(5)根据本文研究和线性理论得到的粘性水动力,对海洋结构物的运动进行了预测,结果与现场实测结果吻合良好。(6)本文所开发的基于运动数学模型的动力定位系统,可以非常精确地控制海洋结构物的位移。少

项目成果

期刊论文数量(20)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Changhong Hu,W.Koterayama: "Wave Force on Horizontal Cylinders at Low Keulegan-Carpenter and Reynolds Numbers" International Journal of Offshore and Polar Engineering. Vol.6,No.2. 124-130 (1996)
胡长虹,W.Koteayama:“低 Keulegan-Carpenter 和雷诺数下水平圆柱上的波浪力”国际近海和极地工程杂志。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Changhong Hu and W.Koterayama: "Wave Force on Horizontal Cylinders at Low Keulegan-Carpenter and Reynolds Numbers" International Journal of Offshore and Polar Engineering. Vol.6, No.2. 124-130 (1996)
Changhong Hu 和 W.Koteayama:“低 Keulegan-Carpenter 和雷诺数下水平圆柱上的波浪力”国际近海和极地工程杂志。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
K.Hoshino,S.Kato,W.Koterayama: "Estimation Method of Viscous Forces Acting on Floating Structures" Proc.of 7th International Offshore and Polar Engineering Conference. (1997)
K.Hoshino,S.Kato,W.Koterayama:“作用于浮动结构的粘性力的估计方法”第七届国际近海与极地工程会议论文集。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
W. Koterayama and Changhong Hu: "Wave Forces on Horizontal Cylinders at Low Keulegan-Carpenter and Reynolds Numbers" Proc. of the 5th Int. Offshore and Polar Engineering Conference. Vol. 3. 189-195 (19954年)
W. Koterayama 和 Changhong Hu:“低 Keulegan-Carpenter 数和雷诺数下的波浪力”,第五届国际海上和极地工程会议论文集。 189-195 (19954)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
M.Nakamura,H.Kajiwara W.Koterayama: "Model Experiments on Thruster Assisted Mooring System Controlled by H∞ Controller" Proc.of 6th International Offshore and Polar Engineering Conference. Vol.2. 464-468 (1996)
M.Nakamura、H.Kajiwara W.Koterayama:“H∞控制器控制的推进器辅助系泊系统模型实验”Proc.of 6th International Offshore and Polar Engineering Conference Vol.2 464-468(1996)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

KOTERAYAMA Wataru其他文献

KOTERAYAMA Wataru的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('KOTERAYAMA Wataru', 18)}}的其他基金

Research and Development on a Training Simulator for Reentry Operations of a Deep-sea Drilling Ship and Its Assisting System
深海钻井船再入作业训练模拟器及其辅助系统的研制
  • 批准号:
    19206094
  • 财政年份:
    2007
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
A Study on Development of Control System for Long Riser
长立管控制系统开发研究
  • 批准号:
    16206086
  • 财政年份:
    2004
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
A Study on Dynamics of Flexible Marine Riser
柔性海洋立管动力学研究
  • 批准号:
    13355037
  • 财政年份:
    2001
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Development of Roll Control System for a Towed Vehicle
牵引车侧倾控制系统的开发
  • 批准号:
    11555264
  • 财政年份:
    1999
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Study on motion control of vehicle for sea bottom survey
海底调查车运动控制研究
  • 批准号:
    09305067
  • 财政年份:
    1997
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Development of CAD System for Control System of Autonomous Underwater Vehicle
自主水下航行器控制系统CAD系统开发
  • 批准号:
    08555250
  • 财政年份:
    1996
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Study on momentum, heat flux and substance exchange between atmosphere & ocean
大气间动量、热通量及物质交换研究
  • 批准号:
    06302067
  • 财政年份:
    1994
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Co-operative Research (A)
Development of Dynamic Positioning System for Deep Sea Floating Structure
深海浮式结构动力定位系统研制
  • 批准号:
    04302038
  • 财政年份:
    1992
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for Co-operative Research (A)
Field Observation of Orbital Motion in Waves
波浪轨道运动的现场观测
  • 批准号:
    02452188
  • 财政年份:
    1990
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
The Slow-drift Oscillation of Floating Structure
漂浮结构的慢漂振荡
  • 批准号:
    61460155
  • 财政年份:
    1986
  • 资助金额:
    $ 4.67万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了