摘要
船海工程领域中的高速水动力问题及其涉及的复杂流-固耦合过程普遍具有大变形、动边界、强对流、多介质等特征,一直是研究的热点和难点。而传统的网格算法在捕捉边界或界面大变形时存在一定局限性,亟待开发新一代无网格数值模拟技术。其中,光滑粒子流体动力学(SPH)作为拉格朗日无网格粒子方法,在捕捉多相界面和流-固耦合界面时具有较高的精度和强鲁棒性。近年来,随着SPH理论及方法的不断完善,SPH在理论完备性及计算稳定性方面取得了许多新的进步和突破,在模拟高速水动力方面的优势不断凸显,开始广泛应用于船海工程问题。为此,围绕水面航行器的高速水动力、航行体的跨介质水动力、水下爆炸与结构毁伤等问题,针对SPH理论及方法在上述领域取得的研究进展进行综述,讨论现有方法面临的问题与挑战,并展望未来需要开展的研究工作,旨在为后续相关研究提供参考。
High-speed hydrodynamics and its corresponding complex fluid-structure interactions(FSI) are challenging topics associated with naval architecture and ocean engineering, typically characterized by large deformations, moving boundaries, strong convection and multiple fluid media. Since traditional mesh-based numerical methods possess limited ability to accurately simulate such strongly nonlinear problems, it is imperative to develop meshless numerical schemes with high fidelity and robustness to tackle this dilemma. As one of the most promising truly meshless methods, smoothed particle hydrodynamics(SPH) shows apparent advantages in high-speed hydrodynamics problems thanks to its Lagrangian nature. In the present paper, the attention is particularly focused on the latest advances of several SPH techniques with respect to the following high-speed hydrodynamics problems: vessel-induced waves and wakes, the water entry process of projectiles,and underwater explosion and its resulting structural damage;in addition, the future prospects of SPH are provided in the last part of the paper.
作者
钟诗蕴
孙鹏楠
吕鸿冠
彭玉祥
张阿漫
ZHONG Shiyun;SUN Pengnan;LYU Hongguan;PENG Yuxiang;ZHANG Aman(School of Ocean Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 519082,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《中国舰船研究》
CSCD
北大核心
2022年第3期29-48,共20页
Chinese Journal of Ship Research
基金
国家自然科学基金资助项目(12002404,52171329)
广州市基础与应用基础研究资助项目(202102020371)。
关键词
高速水动力
光滑粒子流体动力学
计算力学
流-固耦合
high-speed hydrodynamics
smoothed particle hydrodynamics
computational mechanics
fluid-structure interaction
