小间距的旁靠驳船间水动力干扰数值与试验研究(英文)  

Numerical and Experimental Study on Hydrodynamic Interactions between Two Side-by-side Barges in Close Proximity

作　　者：徐亮瑜[1] 杨建民[1] 李欣[1] 许鑫[1] 

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240

出　　处：《船舶力学》2014年第3期248-261,共14页Journal of Ship Mechanics

基　　金：Supported by Youth innovation fund of State Key Laboratory of Ocean Engineering(No.GKZD010059-21)~~

摘　　要：当海上多船联合作业时,船体之间会发生水动力干扰。当间距较小时,两船的水动力参数与间距内部波面升高在某些频率处存在强烈的共振现象,而基于理想流体的经典势流理论对此共振结果的模拟存在较大失真。为了弥补此项问题,文章采用加盖阻尼法(damping lid method)对3 m间距旁靠布置的两艘相同驳船的水动力干扰现象进行研究。通过在间距内部的自由液面边界条件上添加阻尼耗散项,使间距内部的过大波面升高被显著抑制,从而得到更接近实际的数值计算结果。在此基础上开展模型试验研究,通过对比模型试验与数值模拟结果发现,当无量纲阻尼参数ε取为0.026时,两船之间自由液面升高、两船的运动响应与平均漂移力计算结果均与试验结果吻合较好。Aiming at the hydrodynamic interaction between two vessels in side by side configuration, the conventional potential theory based on the ideal fluid assumption overestimates the hydrodynam-ic results and wave elevations in the gap near the resonance region. This paper investigates the hy-drodynamic performances of two identical barges with close proximity in side by side configuration using the damping lid method. With this method, the wave exaggeration in the gap is suppressed ef-fectively and more realistic numerical results are obtained. Corresponding experiment are carried out to validate the numerical results and comparison between the test results and calculation shows good agreement. Wave elevations in the gap, motion responses and drift forces of the two barges can all achieve satisfactory agreement when the unique non-dimensional damping parameter ε is set to 0.026.

关 键 词：旁靠 水动力干扰 漂移力 加盖阻尼法 

分 类 号：U661.32[交通运输工程—船舶及航道工程]