深V型无人艇附加质量计算及其影响

来源期刊:中南大学学报(自然科学版)2011年第z1期

论文作者:孙寒冰 邹劲 庄佳园 吴恭兴

文章页码:567 - 573

关键词:无人艇;深V型滑行艇;附加质量;Hess-Smith方法

Key words:unmanned surface vehicle; deep-V planing-hull; added mass; Hess-Smith method

摘    要:针对某深V艇型无人艇惯性类水动力的计算方法进行研究,采用Hess-Smith方法计算三维物体在流体中运动的附加质量并经椭球算例验证。在实际计算中根据该艇模型试验测得的升沉及纵倾角得到其入水体积及形状,充分考虑滑行艇航速对附加质量的影响。建立无人艇6自由度运动方程,分别使用经验公式和Hess-Smith方法得到的2组附加质量值对无人艇运动状态进行仿真计算,并将结果与实艇海试结果进行对比。对比结果表明:附加质量对无人艇的运动状态有一定影响,在计算滑行艇附加质量时,考虑航速影响的仿真结果更加接近真实情况。

Abstract: A computation method for calculating added mass of an unmanned surface vehicle (USV) maneuvering in water was developed using Hess-Smith method, which was verified by the ellipsoid. Based on the results of model tests, the trim angle and the draft were obtained to calculate water entry shape of the USV, so that the influence of speed to added mass was considered. Then the six-degree-of-freedom dynamic equations were established according to theory mechanics, and different parameters of USV motion were achieved with the results of the empirical formula and Hess-Smith method respectively. Finally, the results were compared with the sea-experiments results of USV. The results show that the added mass has a considerable effect on USV motion and the simulation result considering speed effect is more approach to the actual situation, the feasibility of the method is verified.

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