上海交通大学学报(自然版) ›› 2016, Vol. 50 ›› Issue (01): 115-122.

• 交通运输 • 上一篇    下一篇

限宽水域中船舶平面运动机构试验及水动力导数数值模拟

刘晗a,马宁a,b*,邵闯a,顾解忡a,b   

  1. (上海交通大学 a.船舶海洋与建筑工程学院; b.海洋工程国家重点实验室,上海 200240)
  • 收稿日期:2015-06-15 出版日期:2016-01-29 发布日期:2016-01-29
  • 基金资助:
    国家重点基础研究发展计划(973)项目(2014CB046806),教育部财政部重大科研专项——船舶数字化智能设计系统二期(GKZY010004)

Numerical Simulation of Planar Motion Mechanism Test and Hydrodynamic Derivatives of a Ship in Laterally Restricted Water

LIU Hana,MA Ninga,b,SHAO Chuanga,GU Xiechonga,b   

  1. (a. School of Naval Architecture, Ocean and Civil Engineering; b. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2015-06-15 Online:2016-01-29 Published:2016-01-29

摘要: 摘要: 为探究有限宽度水域中大型船舶的水动力特性,基于计算流体力学(CFD)技术对限宽水域中的平面运动机构(PMM)试验进行数值模拟.在对有限水域宽度的PMM试验的动态模拟上,开发了混合动网格技术,数值计算结果与循环水槽PMM试验结果对比证明采用该方法有效.继而模拟不同宽度水域中的PMM试验,分析船舶水动力随运动速度变化的关系.结果表明,限宽水域中水动力随运动速度变化的非线

关键词: 计算流体力学, 限宽水域, 混合动网格技术, 平面运动机构试验, 水动力导数

Abstract: Abstract: To investigate the hydrodynamic characteristics of a large ship in laterally restricted water, this paper simulated the PMM test based on the computational fluid dynamics(CFD) technique. In order to realize the dynamic simulation of the planar motion mechanism(PMM) test limited by water width, a hybrid dynamic mesh technique was proposed. The proposed method was validated by comparing the numerical results with results of the PMM test in a circulating water channel. The PMM tests for different widths were simulated to analyze the relationship between hydrodynamic forces and motional velocities. The results show that the nonlinear feature of hydrodynamic forces becomes more remarkable in laterally restricted waters. The acceleration derivatives increase whereas the damping derivatives decrease, and a slight increment appears in the absolute values of rotational derivatives. The second order derivatives change drastically.

Key words: computational fluid dynamics (CFD), laterally restricted water, hybrid dynamic technique, planar motion mechanism(PMM) test, hydrodynamic derivatives

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