摘要
采用计算流体力学方法和重叠网格技术建立了两栖车水中航行运动的数值模型,计算其在静水环境中、不同航速下运动的水动力性能,包括阻力、垂荡和纵摇性能。此外,研究了防浪板在不同航速下的受力特性,包括纵向、垂向受力以及板上不同位置的力矩。基于可实现的k-ε湍流模型和重叠网格技术建立的CFD数值模型可以较好的实现两栖车水中运动模拟与性能预报,与拖曳试验结果的对比证实了该模型的有效性。由于高航速下两栖车抬首现象严重,防浪板顶部承受力矩较大,工程设计中需重点加强顶部连接杆件。
The computational fluid dynamics method and overlapping grid technology were employed to establish the numerical model.The hydrodynamic performance of vehicle’s movement in a still sea state at different speeds was calculated,including resistance,heave and pitch.In addition,the wave board design of the amphibious vehicle was beneficial to the wave suppression effect and the stability during the water entry and sailing.This paper studied the force characteristics of the wave board at different speeds,including longitudinal force,vertical force and the torque on the board.The results show that the CFD numerical model based on the realizable k-εturbulence model and overlapping grid technology can realize the motion simulation and performance prediction of amphibious vehicle;The amphibious vehicle’s head uplifting phenomenon is serious under high speed;The top torque of wave board is large,and it is necessary to strengthen the top link rod in the engineering design.
作者
王少新
王涵
金国庆
巩秋野
李鹏宇
WANG Shaoxin;WANG Han;JIN Guoqing;GONG Qiuye;LI Pengyu(School of Naval Architecture,Dalian University of Technology,Dalian 116024,China;Dalian Yuhai Jiayi Consulting Technology Corporation,Dalian 116000,China;Harbin First Machinery Group Corporation,Harbin 150056,China)
出处
《兵器装备工程学报》
CAS
北大核心
2020年第1期1-6,共6页
Journal of Ordnance Equipment Engineering
基金
科技部国家重点研发计划重点专项基金项目(2016YC0802705).
关键词
两栖车
CFD
重叠网格
防浪板
amphibious vehicle
CFD
overset mesh
wave board
