基于CFD的滑行艇兴波与姿态模拟分析  

Simulation and Analysis of Wave-making and Attitudes of Planing Hull by CFD

作　　者：王慧 朱仁传[1] 杨云涛 黄山 WANG Hui;ZHU Renchuan;YANG Yuntao;HUANG Shan(State Key Laboratory of Ocean Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Hydrodynamics,China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室,上海200240 [2]中国船舶科学研究中心水动力学重点实验室,无锡214082

出　　处：《中国造船》2020年第3期1-14,共14页Shipbuilding of China

摘　　要：滑行艇高速航行时伴有强非线性的喷溅,姿态变化剧烈。论文基于CFD,应用重叠网格技术,对滑行艇从排水、过渡到滑行阶段的兴波、航行姿态和水动力特性进行模拟研究。CFD模拟给出了不同航速下的航行姿态与阻力,与Savitsky公式及相关试验进行了比较;获得了不同横剖面处的压力与方尾后中心线处波高的分布规律。研究表明CFD方法计及了粘性的影响,与Savitsky半经验公式相比,能准确模拟滑行姿态,细致描述滑行艇高速滑行兴波与喷溅,为准确地掌握滑行艇水动力特性提供支撑。High-speed planing hull moves usually with strong nonlinear spray and drastic changes of attitude.Based on the CFD methods with overset grid technology,simulations of wave-making,navigation attitudes,and hydrodynamic characteristics of a planing hull from the displacement stage,the transition to the planing stage are conducted.Navigation attitudes and resistance results of the planing hull from CFD simulation at different speeds are compared with the Savitsky formula and relevant experimental data.The laws of pressure distribution at different cross-sections and wave elevation at the center line after transom are obtained.Due to the CFD method takes account of the influence of viscosity,compared with Savitsky’s semi-empirical formula,the accurate attitudes and the wave-making and spray of the planing hull in detail can be obtained from CFD simulations.It supports us to accurately grasp the hydrodynamic characteristics of the planing hull.

关 键 词：滑行艇 RANS 重叠网格技术 Savitsky公式 航行姿态 静水阻力 压力分布 

分 类 号：U661.31[交通运输工程—船舶及航道工程]