Test research on the resistance performance of high-speed trimaran planing hull
Test research on the resistance performance of high-speed trimaran planing hull
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DOI：
10.2478/pomr-2013-0040
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发表时间：
2013-12
期刊：
影响因子：
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通讯作者：
Weijia Ma;Huawei Sun;Jin Zou;Heng Yang
中科院分区：
文献类型：
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作者：
Weijia Ma;Huawei Sun;Jin Zou;Heng Yang
摘要 为鉴定三体滑行船的高速航行能力，并考察其阻力和船型特性，进行了船模试验，测量了不同排水量和重心位置下的阻力、纵倾和垂荡。然后利用测试结果研究防喷带对阻力和适航性的影响。此外，在模型试验中还比较了不同滑行面，有助于研究台阶对船体阻力及其移动位置的影响。此外，还对带台阶和不带台阶的单体船和三体滑行船的阻力特性进行了比较。试验结果表明：两个辅助舷侧增加了高速运动时的气动升力，提高了水动力性能；三体滑行船体还具有优异的纵向稳定性和低兴波作用；当Fr∇>8时，其运动仍然稳定，并出现两个明显的阻力峰值和航行状态的两次变化（第二次变化较小）；防浪带有利于高速时的适航性。无台阶的三体滑行船在第二个阻力峰值之前的阻力和航行行为的变化趋势与无台阶的单体滑行船相同。但当两个船体均存在台阶时，变化趋势不同；更具体地，带台阶的三体滑行船体只有一个阻力峰值，其阻力随着速度的增加而增大，并且随着台阶数的增加，阻力以增加的速度提高。
ABSTRACT In order to identify high-speed navigation ability of trimaran planing hull, as well as investigate the characteristics of its resistance and hull form, ship model tests were conducted to measure resistance, trim and heaving under different displacements and gravity centre locations. The test results were then used to study the influence of spray strips on resistance and sea-keeping qualities. Moreover, different planing surfaces were compared in the model tests which helped to look into influence of steps on hull resistance and its moving position. Also, the resistance features of monohull and trimaran planing hulls, both with and without steps, were compared to each other. From the tests it can be concluded that: the two auxiliary side hulls increase aerodynamic lift at high-speed motion, which improves the hydrodynamic performance; the trimaran planing hull has also excellent longitudinal stability and low wave-making action; when Fr∇ > 8, its motion is still stable and two distinct resistance peaks and two changes of sailing state (the second change is smaller) appear; spray strips are favourable for sea-keeping qualities at high speed. The change trends before the second resistance peak as to the resistance and sailing behaviour of trimaran planing hull without steps are the same as for monohull planing hull without steps. but when steps in both hulls exist the change trends are different; more specifically: trimaran planing hull with steps has only one resistance peak and its resistance increases along with its speed increasing, and the resistance is improved at the increasing speed as the number of steps increases.