| 对流涡自组织过程的数值研究 |
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| 引用本文： | 薛具奎,胡隐樵.对流涡自组织过程的数值研究[J].高原气象,2002,21(4):354-358. |
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| 作者姓名： | 薛具奎 胡隐樵 |
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| 作者单位： | 1. 西北师范大学,物理与电子工程学院,甘肃,兰州,730070;中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000
2. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
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| 摘 要： | 利用一个简化的浅对流模式，从非线性热力学观点出发，分析了热对流涡的自组织过程，揭示了系统熵收支与对流涡的形成及发展过程的关系。结果表明，系统失稳构成了对流涡形成的触发过程；在对流涡的发展过程中，涡的非线性自组织是对流涡组合兼并的动力学原因，而与这一过程相对应的负熵流是引起涡自组织并最终维持对流涡有序结构的非线性热力学原因。
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| 关 键 词： | 自组织过程 对流涡 数值模拟 负熵流 边界条件 初始条件 |
| 文章编号： | 1000-0534(2002)04-0354-05 |
| 修稿时间： | 2001年4月13日 |
Numerical Study For Convection Cells Self-Organization |
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| XUE Ju kui ,HU Yin qiao.Numerical Study For Convection Cells Self-Organization[J].Plateau Meteorology,2002,21(4):354-358. |
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| Authors: | XUE Ju kui HU Yin qiao |
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| Institution: | XUE Ju kui 1,2,HU Yin qiao 2 |
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| Abstract: | For a shallow convection boundary layer system, convection cells self organizing process is studied according to the nonlinear thermodynamic theory. The relationship between the entropy budget and cells organization process is revealed clearly. As a result, the catastrophic lose of stability in the system triggered the occurence of cells. The cells pairing and merger process can be dynamicly viewed as cells nonlinear self organization. While in corresponence with this process, the negative entropy flow gained from the environment is the basic thermodynamic reason of the cells self organization and final maintain of ordered structure cells. |
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| Keywords: | Convection cell Numerical simulating Self organization |
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