Application of computational fluid dynamics simulation for submarine oil spill  

作　　者：YANG Zhenglong YU Jianxing LI Zhigan CHEN Haicheng JIANG Meirong CHEN Xi 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,School of Civil Engineering,Tianjin University,Tianjin 300072,China [2]Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China [3]Offshore Oil Engineering Co.Ltd.,China National Offshore Oil Corporation(CNOOC),Tianjin 300451,China [4]CNOOC Research Institute Co.Ltd.,China National Offshore Oil Corporation(CNOOC),Beijing 100028,China

出　　处：《Acta Oceanologica Sinica》2018年第11期104-115,共12页海洋学报（英文版）

基　　金：The National Basic Research Program(973 Program)under contract No.2014CB046803;the National Natural Science Foundation of China under contract No.51239008;the National Science and Technology Major Project under contract No.2016ZX05028005-004

摘　　要：Computational fluid dynamics （CFD） codes are being increasingly used in the simulation of submarine oil spills. This study focuses on the process of oil spills, from damaged submarine pipes, to the sea surface, using numerical models. The underwater oil spill model is developed, and a description of the governing equations is proposed, along with modifications required for the particalization of the control volume. Available experimental data were introduced to evaluate the validity of the CFD predictions, the results of which proved to be in good agreement with the experimental data. The effects of oil leak rate, leak diameter, current velocity, and oil density are investigated, by the validated CFD model, to estimate the undersea leakage time, the lateral migration distance, and surface diffusion range when the oil reaches the sea surface. Results indicate that the leakage time and lateral migration distance increase with decreasing leak rates and leak diameter, and increase with increasing current velocity and oil density. On the other hand, a large leak diameter, high density, high leak rate, or fast currents result in a greater surface diffusion range. The findings and analysis presented here will provide practical predictions of oil spills, and guidance for emergency rescues.Computational fluid dynamics （CFD） codes are being increasingly used in the simulation of submarine oil spills. This study focuses on the process of oil spills, from damaged submarine pipes, to the sea surface, using numerical models. The underwater oil spill model is developed, and a description of the governing equations is proposed, along with modifications required for the particalization of the control volume. Available experimental data were introduced to evaluate the validity of the CFD predictions, the results of which proved to be in good agreement with the experimental data. The effects of oil leak rate, leak diameter, current velocity, and oil density are investigated, by the validated CFD model, to estimate the undersea leakage time, the lateral migration distance, and surface diffusion range when the oil reaches the sea surface. Results indicate that the leakage time and lateral migration distance increase with decreasing leak rates and leak diameter, and increase with increasing current velocity and oil density. On the other hand, a large leak diameter, high density, high leak rate, or fast currents result in a greater surface diffusion range. The findings and analysis presented here will provide practical predictions of oil spills, and guidance for emergency rescues.

关 键 词：oil spill computational fluid dynamics （CFD） oil particles current velocity 

分 类 号：U698.7[交通运输工程—港口、海岸及近海工程] U674.76[交通运输工程—船舶与海洋工程]