多功能水下作业支持船操纵运动仿真

发布时间：2018-06-26 13:30

  本文选题：船舶操纵性 + 水动力导数　； 参考：《江苏科技大学》2016年硕士论文

【摘要】：船舶操纵性是直接关系船舶航行安全及船舶营运经济性的重要指标,提高船舶操纵性是船舶设计研发的重要内容。传统船舶动力主要采用常规螺旋桨与舵配合,船员往往根据自身经验对船舶进行操纵,船员经验不足或经验适用性低,会带来安全隐患和经济损失。目前,船舶操纵性研究对象多为常规舵桨推进类型船舶,针对侧推器、全回转推进器船舶的操纵性研究成果较少,因此,针对配备此类推进器的船舶进行操纵运动仿真研究十分有意义。本文以配备首侧推器及全回转导管螺旋桨的某型多功能水下作业支持船为研究对象,从提高该型多功能水下作业支持船操纵性的角度出发,展开一系列的研究,主要研究内容如下:(1)基于CFD的船舶操纵运动水动力导数求解。首先以DTMB5415船型为对象进行数值仿真计算,将仿真计算结果与船模试验数据对比验证网格划分及边界条件设定的合理性,其次对仿真计算得到的离散点利用傅里叶级数拟合后求解水动力导数,验证数据处理的正确性,最后采用同一仿真算法及参数设置求解目标船型的水动力导数。(2)船舶操纵运动仿真平台的搭建。以Matlab/Simulink为平台,利用第二章介绍的经验公式搭建船舶平面运动仿真平台。搭建平台过程中针对全回转导管螺旋桨的推力和力矩处理,考虑偏转角度对纵向力、横向力以及回转力矩的影响。(3)船舶操纵运动仿真。首先对(操纵方式与本文目标船型一致的)某型港作拖轮进行Z形试验与回转运动仿真,以验证搭建的船舶操纵运动平台的可靠性。针对本文目标船型,通过改变平台的输入参数,实现Z形试验及回转运动仿真。其中针对Z形试验仿真进行5/5??、10/10??、15/15??、20/20??四种不同标准值的仿真;对回转运动仿真探究了螺旋桨偏转角度、转速、环境载荷等参数对定常回转直径的影响。本文最后探究了侧推器对船舶回转运动的辅助作用。本文建立的船-机-桨模型可以为多功能水下作业支持船的操纵性仿真研究提供借鉴,对船舶驾驶人员在实际操船过程中提供一定参考价值,也为模拟船舶在风、流中的操纵性研究提供一定的理论基础。
[Abstract]:Ship maneuverability is an important index which is directly related to the safety of ship navigation and the economy of ship operation. To improve ship maneuverability is an important part of ship design and development. Traditional ship power is mainly used with conventional propeller and rudder. The crew often manipulate the ship according to its own experience. The crew's experience is insufficient or the experience is low. At present, most of the research objects of ship maneuverability are conventional propeller propeller type ships, and there are few research results on the maneuverability of all rotary thrusters. Therefore, it is of great significance to study the maneuverability simulation of ships equipped with such propellers. In order to improve the maneuverability of the multi-function underwater operation support ship, a series of studies are carried out from the angle of improving the maneuverability of the multi-functional underwater operation support ship. The main research contents are as follows: (1) the solution of the hydrodynamic conductance of the ship maneuvering based on CFD. First, the numerical imitation is carried out with the DTMB5415 ship as the object. The simulation results are compared with the ship model test data to verify the rationality of the grid division and the setting of the boundary conditions. Secondly, the discrete points obtained by the simulation calculation are fitted with Fourier series to solve the hydrodynamic derivatives, and the correctness of the data processing is verified. Finally, the same simulation algorithm and parameters are used to solve the target ship shape. Hydrodynamic derivative. (2) build the simulation platform of ship maneuvering motion. Based on the Matlab/Simulink platform, the ship plane motion simulation platform is set up by the empirical formula introduced in second chapters. The thrust and moment of the propeller for the full gyration pipe are set up in the platform process, and the longitudinal force, lateral force, and rotary moment are taken into consideration. Influence. (3) simulation of ship maneuvering motion. First, the Z shape test and rotary motion simulation of a type of tugboat (which is in line with the target ship type of this article) is carried out to verify the reliability of the ship maneuvering platform. The Z shape test and the rotary motion simulation are realized by changing the input parameters of the ship's target ship. The simulation of Z shape test is carried out for four different standard values of 5/5?? 10/10?? 15/15??? 20/20?? the influence of the parameters of propeller deflection angle, speed, environment load on the constant gyration diameter is explored. Finally, the auxiliary effect of the side thruster on the rotational motion of the ship is explored. The ship engine paddle model established in this paper is established in this paper. The model can provide reference for the simulation of the maneuverability of multi-functional underwater vehicle support ship, and provide some reference value for the ship drivers in the actual process of ship operation, and also provide a theoretical basis for the simulation of the maneuverability of ships in the wind and flow.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U661.33
，

本文编号：2070533