基于嵌套网格技术对控制动作下水下拖曳系统水动力特性的分析  

Hydrodynamic analysis of underwater towed system under control actions based on nested grid technique

作　　者：杨显原 吴家鸣[1] YANG Xian-yuan;WU Jia-ming(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《船舶力学》2022年第7期988-1001,共14页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51979110);国家重点研究发展计划项目(2018YFC1406600)。

摘　　要：本文运用重叠网格嵌套滑移网格技术,对匀速拖曳工况中水翼作正弦摆动、两侧导管桨交替正反转以及拖曳缆绳正弦收放等不同周期性控制动作下水下拖曳系统的水动力特性进行数值分析,研究水下拖曳系统控制动作与控制力、运动姿态、阻力以及拖曳缆绳拖曳力等特性及其相互之间的关系。分析结果表明,水下拖曳系统在控制动作下呈现出复杂的运动学与动力学特性,利用文中的水动力模型可以对水下拖曳系统水动力特性进行有效的预报。The hydrodynamic characteristics of an underwater towed system under different periodic control actions in uniform towing condition, such as sinusoidal oscillating of hydrofoil, forward-reversal alternation of the ducted propellers at sides and sinusoidal control of the towing cable, were simulated by using overlapping grid nested sliding grid techniques. In this paper, the control actions, control force, movement posture and resistance of the underwater towed system and the relationship between them were studied. The results show that the underwater towed system presents complex kinematic and dynamic characteristics, and the hydrodynamic characteristics of underwater towed system can be effectively predicted by using the hydrodynamic model in this paper.

关 键 词：水下拖曳系统 重叠网格 嵌套技术 控制动作 CFD 

分 类 号：TV131.2[水利工程—水力学及河流动力学]