海上溢油应急处理的仿真和三维可视化

Simulation of Oil Spill Emergency Response at Sea and 3D Visualization

为完善海上搜救模拟器中的溢油仿真模块,在对近海潮流进行数值模拟的基础上,通过对溢油扩展、漂移、蒸发和乳化数学模型的组合计算,首先实现了近海溢油运动过程的实时仿真。随后结合海浪的真实感绘制算法,使用OSG(Open Scene Graph)纹理烘焙和平面折射技术,实现了海上溢油扩散过程的三维可视化。对现有海上溢油应急处理技术进行研究,针对溢油机械回收设备中常用的围油栏建模,为实现海上溢油被围油栏拦截过程的动态仿真,提出了一种围油栏与溢油间的碰撞检测算法,最后实现了围油栏拦截溢油的实时动态仿真与三维可视化,其仿真结果对解决实际溢油污染问题具有实用价值。

The oil spill simulation module of marine search and rescue simulator is improved through implementing the real time simulation of offshore oil spill motion process combining the model calculations of oil spread,drift,evaporation and emulsification with the numerical calculation of tidal current in coastal areas.The 3D visualization of oil spill at sea is developed by using the Rendering to Texture and Planar Refraction techniques of OSG in conjunction with the realistic rendering algorithm of ocean waves.Existing oil spill emergency response technologies are studied.A model of conventional mechanical recovery facility of oil spill,oil containment boom,is established.For dynamically simulating oil interception by oil containment boom,an algorithm of collision detection between oil containment boom and spilled oil is put forth.Real time dynamic simulation and 3D visualization of interception process are finally implemented.The simulation results have an important and practical value to deal with oil spill pollution.