供应船纵向加速度导数的估算方法  

Method for Estimating Longitudinal Acceleration Derivatives of Supply Vessels

作　　者：赵小仨 罗薇[1,2] 柯枭冰 徐海祥[1,2] 

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [2]武汉理工大学交通学院,武汉430063

出　　处：《中国航海》2014年第4期88-91,共4页Navigation of China

摘　　要：由于作为海洋研究和开发的重要载体的供应船的控制技术决定着船舶能否按预定位置航行或停泊,因此,解决控制技术中的一个关键问题即确定船舶数学模型中的水动力导数很重要。采用CFD商用软件FLUENT,结合动网格技术,对系列供应船的纵荡运动进行数值模拟,得到系列船舶的纵向水动力,进而获得相应的纵向加速度导数,并分析数值计算结果的合理性。在此基础上,采用偏最小二乘的回归方法,得出供应船纵向加速度导数关于船型参数和呆木参数的估算公式。The accuracy of ship model parameters is of critical importance to oceanographic research support ships which need motion control to move or stop according to given plan. The dynamic characteristics of a series of oceanographic research support ships are studied through numerical simulation of surge motion of ships, using commercial CFD software FLUENT and dynamic mesh technology, The hydrodynamic longitudinal derivatives of the ships are determined in the process. After the rationality of the results of the numerical calculation has been checked, the formula relating the ship longitudinal acceleration derivative to ship hull form and deadwood parameters are obtained by partial least square regression method.

关 键 词：水路运输 供应船 纵向加速度导数 数值计算 回归公式 

分 类 号：U661[交通运输工程—船舶及航道工程]