内河船舶航行三维仿真关键技术研究

Key Technology of 3-dimensional Simulation for Inland Vessel′s Navigation

针对枯水期水深不足会影响内河通航安全与通航效率的问题,提出了河床三维建模的快速生成方案。同时,结合粘性液体力学及细胞自动机理论,利用顶点缓存保存河水平面格网中的所有顶点并利用细胞自动机演化规则实时更新水平面格网中各点高程值达到模拟出船行波效果。实验结果表明,建立河床三维模型的方法比较快速,用新方法模拟出的船行波的仿真效果较为真实,在普通PC机或笔记本电脑上能满足三维仿真的实时需求。

Inland river depth changes with the seasons.The river depth in low flow period affects the safety and efficiency of inland vessel′s navigation.A quick and effective solution for generating 3-dimensional riverbed was presented to solve the problems.Meanwhile,combining with the fluid dynamics theory and cellular automata theory,water wave with the navigation of vessels was simulated when all vertexes in river water plane grid were saved by vertex buffer and elevation value in water plane grid was dynamically updated by cellular automata.Experimental results show that the solution for generating 3D model of riverbed is rapid and efficient;the simulation of water wave is authentic by using this new algorithm.They can even satisfy the requirements of real time animation under generic PC or laptop.