离散相模型和经验模型在海面溢油模拟中的应用  

Application of Discrete Phase Model and Empirical Model in Oil Spill Simulation of Sea Surface

作　　者：陈茜[1,2] 余建星 李志刚[1,3,4] 吴朝晖 蒋梅荣[1,3,4] 杨政龙[1,2] CHEN Xi;YU Jianxing;LI Zhigang;WU Zhaohui;JIANG Meirong;YANG Zhenglong(State Kay Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Collaborative Innovation Center for Advanced Ship and Deep Sea Exploration,Shanghai 200240,China;Offshore Oil Engineering Company Limited,Tianjin 300451,China;CNOOC Research Institute,Beijing 100028,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]高新船舶与深海开发装备协同创新中心,上海200240 [3]海洋石油工程股份有限公司,天津300451 [4]中海油研究总院,北京100028

出　　处：《中国海洋平台》2019年第2期47-53,58,共8页China offshore Platform

基　　金：国家重点基础研究发展计划资助(2014CB046803);国家自然科学基金(51239008);国家科技重大专项(2016ZX05028005-004);工信部海洋工程装备科研项目(E-0815C003)

摘　　要：采用基于Fluent离散相模型(Discrete Phase Model,DPM)的海面小泄漏量溢油扩散预报模型,进行海面持续溢油扩散的数值模拟研究。结果表明:在持续泄漏模式下,泄漏点附近原油浓度最大,沿流速方向浓度逐渐降低,流场方向对原油扩散主方向有较大影响;在相同时刻,随着流速增大,原油迁移距离增加,随着湍流强度增大,粒子随机走动增大,离散尺度增大。此外,根据FAY三阶段油膜扩展、油粒子模型以及近年来发展的两阶段法,建立全面的经验性海面溢油预报模型,并根据水面小泄漏量持续溢油试验数据,验证离散相模型与经验模型的正确性。两种模型在各时刻原油流向迁移距离及油膜面积平均相对误差不超过10%,模型合理可靠,均可用于海面溢油扩散预报研究。Based on the Fluent discrete phase Deformable Part Model (DPM), the oil spill dispersion forecasting model for small leakage on the sea surface is studied. The results show that the concentration of the crude oil near the leakage point is the highest, and it decreases gradually along the direction of flow velocity. The flow field direction has great influence on the main direction of crude oil diffusion. The migration distance of the crude oil increases with the increase of flow velocity, and the particle random walk and discrete scale increase with the increase of turbulence intensity. According to “three stages” oil film expansion, oil particle model and two stage model developed in recent years, a comprehensive empirical sea oil spill forecasting model is established. The correctness of the discrete phase model and empirical model is verified according to the test data of the oil spill of small leakage on the sea. Under the test conditions, the average relative error of the migration distance and oil film area of two models at each time is less than 10%. The model is reasonable and reliable, which can be used for the prediction of oil spill on the sea.

关 键 词：离散相模型 FLUENT 海面溢油 油粒子模型 两阶段法 

分 类 号：X55[环境科学与工程—环境工程]