本文關鍵詞： MIKE21 廣西近海 溢油 風場 模擬　出處：《長沙理工大學》2013年碩士論文　論文類型：學位論文

【摘要】：隨著經濟的發(fā)展，廣西近海海域的溢油污染風險不斷增大。溢油事故一旦發(fā)生，不僅對海域的污染范圍廣，而且對海洋生物、海岸環(huán)境以及人類自身都會造成危害，同時也制約了當?shù)亟洕陌l(fā)展。對此，研究廣西近海海域溢油事故發(fā)生后油膜的漂移擴散情況是具有重要的理論和實際意義的。本文應用MIKE21軟件，建立了廣西近海二維溢油模型。采用不同溢油影響因子的工況組合，研究廣西近海溢油的行為歸宿。主要研究內容包括： （1）利用MIKE21HD模塊模擬廣西近海海域的潮流特性，根據(jù)實測資料對其進行驗證，其結果是適用于實際情況的，可以為溢油模塊提供水動力數(shù)據(jù)。 （2）利用MIKE21OS模塊加載廣西近海水動力數(shù)據(jù)，建立廣西近海二維溢油模型，基于“油粒子”思想模擬溢油的漂移、風化等過程�！坝土Ｗ印蹦Ｐ途褪前延湍し稚榇罅康牧Ｗ�，每個粒子代表著一定體積的溢油。粒子的隨機走動模擬了油膜的漂移過程，風化作用可以通過粒子的質量損失和熱量交換來表示。 （3）通過油膜的漂移方向、影響范圍等角度，詳細研究風況、潮流、溢油事故發(fā)生位置以及溢油量等因素對海上溢油的影響。研究發(fā)現(xiàn)，風場是油膜漂移方向的最大影響因素。選取不同氣象條件、不同事故發(fā)生位置等工況組合，，結合廣西近海二維溢油模型進行模擬分析。
[Abstract]:With the development of economy, the risk of oil spill in the coastal waters of Guangxi is increasing. Once the oil spill accident occurs, it will not only cause a wide range of pollution to the sea area, but also endanger marine life, coastal environment and human beings themselves. At the same time, it also restricts the development of the local economy. Therefore, it is of great theoretical and practical significance to study the oil film drift and diffusion after the oil spill accident in the offshore waters of Guangxi. This paper applies MIKE21 software, The two-dimensional oil spill model of Guangxi offshore is established. The behavior of Guangxi offshore oil spill is studied by using different operating condition combination of oil spill factors. The main research contents are as follows:. 1) the MIKE21HD module is used to simulate the tidal current characteristics in the offshore waters of Guangxi, and the results are verified according to the measured data. The results are applicable to the actual situation and can provide hydrodynamic data for the oil spill module. Using the MIKE21OS module to load the hydrodynamic data of Guangxi offshore waters, a two-dimensional oil spill model is established, and the process of oil spill drift and weathering is simulated based on the idea of "oil particle". The "oil particle" model is to disperse the oil film into a large number of particles. Each particle represents a certain volume of oil spills. The random walk of particles simulates the drift process of the oil film and the weathering can be expressed by the mass loss and heat exchange of the particles. 3) from the angle of drift direction and influence range of oil film, the influence of wind condition, tidal current, location of oil spill accident and oil spill amount on oil spill at sea are studied in detail. Wind field is the biggest influence factor of oil film drift direction. Different meteorological conditions, different accident location and other working conditions are selected to simulate and analyze the oil spill model in Guangxi coastal waters.
【學位授予單位】：長沙理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U698.7

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