KVLCC2在斜浪中的运动响应与附加阻力研究

Study on the Motion Response and Added Resistance of KVLCC2 in Oblique Waves

利用切片理论研究KVLCC2船模在波浪上的运动响应和附加阻力,有助于研究船舶耐波性,同时也能丰富切片理论的研究成果。以KVLCC2船模为研究对象,利用切片理论,研究了KVLCC2船模在斜浪中的响应幅值算子曲线、波浪增阻以及运动响应。结果表明,基于切片理论的计算值与实验值总体上吻合良好,证明了切片理论对于船舶在波浪中的计算有较高的精度。相同波长下高航速的垂荡响应明显大于低速,这意味着船舶需要提供更多的能量来克服垂荡运动所引起的能量损耗。当船舶在迎浪和艏斜浪中航行时,降低航速可以有效地减小附加阻力;而当船舶在艉斜浪中航行时,适当增大航速可以一定程度上减小附加阻力。

Using the strip theory to study the motion responses and additional resistance of KVLCC2 ship model on waves is helpful to study the seakeeping performance of the ship,and can also enrich the research results of the slice theory.The KVLCC2 ship model is taken as the research object,and strip theory is used to study the RAO curves,added resistance,and motion response of the KVLCC2 ship model in oblique waves.The results indicate that the calculated values based on the slice theory are generally in good agreement with the experimental values.The heave response at high speeds is significantly greater than that at low speeds at the same wavelength,which means that the ship needs to provide more energy to overcome the energy loss caused by heave motion.When the ship is sailing in waves and bow waves,reducing the speed can effectively reduce the added resistance.When the ship is sailing in oblique waves at the stern,increasing the speed appropriately can reduce the added resistance to a certain extent.