| 气流过山运动的非线性浅水理论 |
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| 引用本文： | 顾伟,伍荣生.气流过山运动的非线性浅水理论[J].气象学报,1995,53(1):30-37. |
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| 作者姓名： | 顾伟 伍荣生 |
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| 作者单位： | 南京大学大气科学系 |
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| 摘 要： | 用一个两层密度不同的流体所组成的非线性浅水模型讨论了过山气流的变化特征。结果表明：在背风坡下游,如果弗罗德数Ｆｒ大于１,则在不同的条件下将会出现波状的、水跃的以及“破裂”的气流,如果Ｆｒ小于１,将只会出现“破裂”气流;在山地上空,地形波关于地形分布是非对称的。
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| 关 键 词： | 非线性 浅水模式 过山气流 |
| 收稿时间： | 1992/10/12 0:00:00 |
| 修稿时间： | 1992/12/18 0:00:00 |
NONLINEAR SHALLOW-WATER MODEL OF FLOW OVER MOUNTAIN |
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| Gu Wei and Wu Rongsheng.NONLINEAR SHALLOW-WATER MODEL OF FLOW OVER MOUNTAIN[J].Acta Meteorologica Sinica,1995,53(1):30-37. |
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| Authors: | Gu Wei and Wu Rongsheng |
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| Institution: | Department of Aimosphend Sciences Nanjing University, Nanjing, 210008;Department of Aimosphend Sciences Nanjing University, Nanjing, 210008 |
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| Abstract: | his paper uses the shallow-water model to discuss the characteristics of the rotating flow over the mountain. The results show that the flow has such features as follows : If Froude numer Fr is greater than 1, then there exist wave-type flow, "jumping flow" or "breaking" flow respectively on the backward of the mountain, While if Froude number Fr is less than 1, then exist the "breaking" flow only. Mountain wave is asymmetric with regard to symmetric mountain. |
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| Keywords: | Nonlinear Shallow water model Flow over mountain |
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