摘要
为实现航海模拟器视景系统中破碎浪的仿真,对近岸区域容易产生的崩碎波和卷碎波进行建模。采用光滑粒子动力学(Smooth Particle Hydrodynamics,SPH)方法对流体进行建模,以容易产生浪花的港区岸壁、码头等为目标模拟区域进行抽象确定边界。基于SPH流体的粒子无序性和同时间步长位置相对固定等特点,对链表搜索法进行改进,提出前向链表搜索法,对SPH模型的近邻搜索算法进行了改进,使得粒子搜索时间复杂度大大降低,提高了粒子近邻搜索的效率。所建立的破碎浪模型具有较好的实时性效果。
For simulating breaking waves in visual system of marine simulator,a model of breaking waves,especially of plunging breakers and spilling breakers in port area,is constructed.Smooth Particle Hydrodynamics（SPH） method,the representative Lagrangian method for fluid flow simulations with complex boundaries,is used.Based on the randomness and relative steadiness during each time step,an improved nearest neighbor search method,named Forward List Search Method,is used to improve neighbor searching efficiency greatly.The constructed model of breaking waves works effectively on line.
出处
《中国航海》
CSCD
北大核心
2012年第1期23-26,30,共5页
Navigation of China
基金
国家重点基础研究发展计划资助"973"项目(2009CB320805)
