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Finite water depth effect on wave-body problems solved by Rankine source method
Feng, Aichun; Tang, Peng; You, Yunxiang; Liu KZ(刘开周)
作者部门水下机器人研究室
关键词Finite Water Depth Rankine Source Method Continuous Source Panel Runge-kutta
发表期刊Journal of Ocean University of China April 2017, Volume 16, Issue 2, pp
ISSN1672-5182
2017
卷号16期号:2页码:191-199
收录类别SCI ; CSCD
WOS记录号WOS:000396071600003
CSCD记录号CSCD:5975370
产权排序4
资助机构National Natural Science Foundation of China (No. 11372184).
摘要Finite water depth effect for wave-body problems are studied by continuous Rankine source method and non- desingularized technique. Free surface and seabed surface profiles are represented by continuous panels rather than a discretization by isolated points. These panels are positioned exactly on the fluid boundary surfaces and therefore no desingularization technique is required. Space increment method is applied for both free surface source and seabed source arrangements to reduce computational cost and improve numerical efficiency. Fourth order Runge-Kutta iteration scheme is adopted on the free surface updating at every time step. The finite water depth effect is studied quantitatively for a series of cylinders with different B/T ratios. The accuracy and efficiency of the proposed model are validated by comparison with published numerical results and experimental data. Numerical results show that hydrodynamic coefficients vary for cylinder bodies with different ratios of B/T. For certain set of B/T ratios the effect of finite water depth increases quickly with the increase of motion frequency and becomes stable when frequency is relatively large. It also shows that water depths have larger hydrodynamic effects on cylinder with larger breadth to draft ratios. Both the heave added mass and damping coefficients increase across the frequency range with the water depths decrease for forced heave motion. The water depths have smaller effects on sway motion response than on heave motion response.
语种英语
WOS标题词Science & Technology ; Physical Sciences
WOS类目Oceanography
关键词[WOS]DESINGULARIZED METHOD ; SURFACE ; MOTIONS ; MASS
WOS研究方向Oceanography
引用统计
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/20218
专题水下机器人研究室
通讯作者Tang, Peng
作者单位1.Department of Civil and Environmental Engineering National University of Singapore, Singapore
2.College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, P. R. China
3.School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, P. R. China
4.State key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, P. R. China
推荐引用方式
GB/T 7714
Feng, Aichun,Tang, Peng,You, Yunxiang,et al. Finite water depth effect on wave-body problems solved by Rankine source method[J]. Journal of Ocean University of China April 2017, Volume 16, Issue 2, pp,2017,16(2):191-199.
APA Feng, Aichun,Tang, Peng,You, Yunxiang,&Liu KZ.(2017).Finite water depth effect on wave-body problems solved by Rankine source method.Journal of Ocean University of China April 2017, Volume 16, Issue 2, pp,16(2),191-199.
MLA Feng, Aichun,et al."Finite water depth effect on wave-body problems solved by Rankine source method".Journal of Ocean University of China April 2017, Volume 16, Issue 2, pp 16.2(2017):191-199.
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