奥里油海上溢油扩散的数值模拟及信息熵预测

Numerical simulation and information entropy forecast on diffusion of spilled orimulsions at sea

利用CFD商业软件PHOENICS3.6.1对奥里油在恒定流情况下在海面和海下的稳态扩散进行数值模拟,通过对扩散的浓度场分布规律的分析,并与经验数据对比,表明奥里油在海下的扩散与其它类型油的扩散有所不同,在扩散的初期油的浓度与水深呈正比例关系衰减,在后期浓度则随水深呈指数型衰减。并应用信息熵理论对污染带的浓度分布进行预测,结果和数值模拟的结果吻合良好,表明用信息熵预测奥里油海上溢油扩散的浓度分布是可行的。

Numerical simulation on the constant diffusion of spilled orimulsions at sea and under sea surface in steady flow condition are made by use of CFD commercial software PHOENICS3. 6.1. By analysis of the concentration distribution and by contrast with experiential data, the results show that the diffusion of spilled orimulsions under sea surface is different from other types of oils. At the beginning of diffusion, the orimulsion concentration will decrease in direct proportion to water depth, while at the end of diffusion it will decrease exponentially with water depth. By application of information entropy theory to forecast the concentration distribution in the contaminant zone, the results are in good agreement with the numerical simulation results, which shows that it is feasible to apply information entropy theory to forecast the diffusion of spilled orimulsions at sea.