摘要
航行体尾空泡状态及演化会对上游流场产生干扰,进而对航行体流体动力特性产生影响。本文基于势流理论,发展了适用于混合边界条件的二维轴对称边界元数值计算程序,在此基础上分析了稳态及非稳态尾空泡流场,获得了不同尾空泡状态对上游物面压力的影响规律,说明了尾空泡瞬态收缩过程对上游航行体物面压力的扰动机理,基于数值计算结合实验数据说明了压力扰动的衰减规律。
The status and dynamic development of tail cavity attached to an underwater vehicle have an influence on the upstream flow,and further affect hydrodynamic characteristics of the vehicle.Based on potential flow theory,an axisymmetric boundary element code,suitable for mixed boundary condition,was developed.The steady and transient flow of tail cavity was calculated,and the pressure distribution at different cavity numbers was obtained,illustrating influence mechanism of acceleration in the flow field on upstream pressure.Based on numerical calculation and experiment results,the characteristic of pressure disturbance attenuation was discussed.
作者
尤天庆
权晓波
刘元清
鲍文春
王占莹
YOU Tian-qing;QUAN Xiao-bo;LIU Yuan-qing;BAO Wen-chun;WANG Zhan-ying(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《船舶力学》
EI
CSCD
北大核心
2021年第9期1182-1188,共7页
Journal of Ship Mechanics
基金
装发部共用技术项目(41406040402)
自然科学基金项目(U20B2005)。
关键词
势流
尾空泡
边界元
水下航行体
potential flow
tail cavity
boundary element method
underwater vehicle
