波浪周期对系泊船舶运动影响试验研究

系泊船舶泊稳是港口设计和营运过程中的重要问题,系泊船舶泊稳标准从实质上讲就是限制系泊船舶的运动量。较长周期波浪作用下的系泊船舶泊稳问题愈来愈受到各方的关注,选取了一艘10万吨级散货船进行横向不规则波作用下的系泊模型试验,在同一波高下变化入射波浪周期,通过系列试验,分析波浪周期对系泊船舶横移、横摇和升沉运动的影响。研究结果表明,系泊船舶横移运动量总体上均随着波浪周期的增大而增大,横移运动对波浪周期的响应敏感程度是变化的;系泊船舶横摇和升沉运动量均随着波浪谱峰周期的增大先增大然后减小,当波谱谱峰周期与相应的船舶固有周期接近时,横摇和升沉运动量均出现了一次峰值。

Experimental investigation on the influence of wave period on the motion of a moored ship

The motion of a moored ship is an important issue during the port design and operation and the essence of mooring stability requirement is to constrain the motion of a moored ship.The mooring condition under relatively long period waves has gained more and more attention.In this paper,the mooring model test is performed with a 100000 ton bulk carrier in irregular transverse waves.The effect of the wave period on the sway,roll and heave motion of a moored ship is analyzed according to the results of series of model tests in which the wave period varies.The test results show that the sway motion increases with the wave period increasing as a whole,but the sensitivity degree of the sway motion response to the wave period is variable.The roll and heave motion all first increase and then decrease with the wave period increasing.When the wave spectrum peak period is close to the natural roll or heave period,the peak values of the roll or heave motion occur.