Water Entry Problems Simulated by an Axisymmetric SPH Model with VAS Scheme  

物体入水的轴对称光滑粒子流体动力学数值模拟研究

作　　者：Xiaoting Huang Pengnan Sun Hongguan Lyu A-Man Zhang 黄晓婷;孙鹏楠;吕鸿冠;张阿漫(School of Ocean Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China.)

机构地区：[1]School of Ocean Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China [3]College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China.

出　　处：《Journal of Marine Science and Application》2022年第2期1-15,共15页船舶与海洋工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12002404 and 52171329);the Natural Science Foundation of Guangdong Province(Grant Nos.2019A1515011405 and 2022A1515012084);the Guangzhou Basic and Applied Basic Research Project(Grant No.202102020371);the Fundamental Research Funds for the Central Universities,Sun Yat-sen University.

摘　　要：Water entry of marine structures has long been an important problem in ocean engineering.Among the different techniques to predict fluid-structure interactions during water entry,smoothed particle hydrodynamics(SPH)method gradually becomes a promising method that is able to solve the impact pressure and the splashing fluid jets simultaneously.However,for three-dimensional(3D)problems,SPH method is computationally expensive due to the huge number of particles that are needed to resolve the local impact pressure accurately.Therefore,in this work an axisymmetric SPH model is applied to solve different water entry problems with axisymmetric structures including spheres and cones with different deadrise angles.Importantly,the Volume Adaptive Scheme(VAS)is added to guarantee the homogeneousness of particle volumes during the simulation.The axisymmetric SPH model with VAS scheme will be introduced in detail and the numerical results will be sufficiently validated with experimental data to demonstrate the high robustness and accuracy of the SPH model for solving 3D axisymmetric water entry problems in an efficient way.

关 键 词：ENTRY Smoothed particle hydrodynamics SLAMMING Ocean engineering 

分 类 号：P75[天文地球—海洋科学]