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A review of numerical modeling research on the marine oil spill 被引量:4
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作者 蔡扬 牟林 +4 位作者 李欢 宋军 迟永祥 管承扬 李程 《Marine Science Bulletin》 CAS 2013年第2期71-86,共16页
Recently, as the oceanic activities are more and more frequently carried out, marine oil spill accidents bring to enormous harm to the economy and society in China, especially in the Offshore China. Marine oil spill i... Recently, as the oceanic activities are more and more frequently carried out, marine oil spill accidents bring to enormous harm to the economy and society in China, especially in the Offshore China. Marine oil spill is one kind of serious disasters which severely damages the marine environment. Aiming at the improvement of the emergency response system and response ability for the oil spill, the relative technologies on oil spill response are developed. This paper briefly introduces the developments and achievements of the oil spill numerical models, including the oil spill spreading model, the oil spill transport model, the oil particle model as well as the oil spill weathering model, which provide the theoretic criterions for the future work on the oil spill predicting and response. 展开更多
关键词 oil spill spreading model transport model weathering model oil particlemodel
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采用多元颗粒模型对圆柱形颗粒在移动床中流动的离散单元法直接数值模拟 被引量:11
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作者 陶贺 钟文琪 金保昇 《中国电机工程学报》 EI CSCD 北大核心 2012年第17期13-19,137,共7页
为了研究活性焦颗粒在移动床内的流动特性,通过离散单元法直接数值模拟方法对活性焦即圆柱形颗粒在移动床内的流动进行了数值模拟。采用多元颗粒模型来描述圆柱形颗粒,即圆柱形颗粒通过几个叠加在一起的球元构成。建立了圆柱形颗粒的碰... 为了研究活性焦颗粒在移动床内的流动特性,通过离散单元法直接数值模拟方法对活性焦即圆柱形颗粒在移动床内的流动进行了数值模拟。采用多元颗粒模型来描述圆柱形颗粒,即圆柱形颗粒通过几个叠加在一起的球元构成。建立了圆柱形颗粒的碰撞机制,分析了圆柱形颗粒在流动时的受力情况,并通过实验验证多元颗粒模型的可靠性。从宏观和微观2个方面,比较圆柱形颗粒2种构建方式(2球元和3球元)下的模拟结果。结果表明:2球元和3球元构建的圆柱形颗粒在动能、转动动能、变形量、碰撞力、碰撞次数等微观方面的差别较大。且通过比较颗粒位置图和下料率可以看出,3球元圆柱形颗粒的模拟结果与实际结果更加相符,因此,选择3球元作为圆柱形颗粒的构建方式。 展开更多
关键词 圆柱形颗粒 多元颗粒模型 构建方法 移动床 离散单元法直接数值模拟
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