Research on Strongly Nonlinear Fluid-Structure Interactions by Wave Impact and Its Applications

波浪冲击强非线性流固耦合研究及其应用

• 批准号: 21246128
• 负责人: KASHIWAGI Masashi
• 金额: $ 24.88万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21246128/
• 关键词: 流体・構造連成問題; 数値流体力学; 波浪衝撃; 非線形境界要素法; ランンキンパネル法; 有限要素法; 流体構造連成問題; ランキンパネル法; 非定常波形解析; 波浪中抵抗増加; 青波衝撃; 圧力計測; 高速度カメラ; CIP法

The CIP-based Cartesian-grid calculation method for strongly nonlinear wave and rigid-body interaction problems was extended to treat the case of elastic-body motions in waves. A hybrid method was also developed, combining a 3D Rankine panel method for the hydrodynamic analysis and a finite-element method for computing elastic vibration modes, and the effect of elastic modes on wave-induced ship motions was investigated. Furthermore, a time-domain nonlinear calculation method based on the boundary element method was studied, which enabled us to simulate the interaction of wave impact and elastic motion of a vertical plate.Experimental studies were also done, measuring complicate fluid motion near the ship bow caused by the green-water impact by use of a high-speed camera.

将基于CIP的强非线性波浪和刚体相互作用问题的笛卡尔网格计算方法推广到处理波浪中弹性体运动的情况。将三维朗肯面法用于水动力分析和有限元方法用于计算弹性振型，并研究了弹性振型对波浪诱导船舶运动的影响。在此基础上，研究了一种基于边界元方法的时域非线性计算方法，模拟了波浪冲击与垂直板弹性运动的相互作用，并进行了实验研究，利用高速摄像机测量了绿水冲击下船头附近复杂的流体运动。

项目成果

Prediction of Radiation Forces By Means of a CIP-based Cartesian Grid Method

• 发表时间: 2011
• 作者: G. He;T. Isshiki;M. Kashiwagi;Changhong Hu

Hydrodynamic Consideration on Added Resistance and Ship-generated Unsteady Waves

附加阻力和船生非定常波的水动力考虑

• 发表时间: 2011
• 期刊: Proc. of 26th International Workshop on Water Waves and Floating Bodies
• 作者: Masashi Kashiwagi;Takuma Sasakawa and Tomoki Wakabayashi
• 通讯作者: Takuma Sasakawa and Tomoki Wakabayashi

Numerical Study on Ship Motions and Added Resistance in Waves by Strongly Nonlinear Three-Dimensional Code

强非线性三维代码对船舶运动和波浪附加阻力的数值研究

• 发表时间: 2010
• 期刊: Proc. of 5th Asia-Pacific Workshop on Marine Hydrodynamics - APHydro2010
• 作者: Hisako Kubo;Masashi Kashiwagi and Changhong Hu
• 通讯作者: Masashi Kashiwagi and Changhong Hu

Response of Vertical Elastic Plate due to Solitary Wave

垂直弹性板对孤立波的响应

• 发表时间: 2010
• 作者: Mohsen FARAHAT;Tsuyoshi HIRAJIMA;新屋貴浩;Guanghua He and Masashi Kashiwagi
• 通讯作者: Guanghua He and Masashi Kashiwagi

３次元ランキンパネル法を用いた船の流力弾性応答解析法について

关于三维朗肯面板法船舶水弹性响应分析方法

• 作者: A.Kuramoto;T.Toyama;T.Takeuchi;Y.Nagai;M.Hasegawa;T.Yoshiie;Y.Nishiyama;原 拓也
• 通讯作者: 原 拓也