| 复杂地形上湍流扩散的数值模拟 |
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| 引用本文： | 桑建国. 1988: 复杂地形上湍流扩散的数值模拟. 气象学报, (2): 219-226. DOI: 10.11676/qxxb1988.027 |
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| 作者姓名： | 桑建国 |
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| 作者单位： | 1.北京大学地球物理系 |
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| 摘 要： | 本文采用准静力大气热力——动力学方程组和平流扩散方程的数值解方法,模拟了汾河河谷地区的流场、温度场和浓度场。所得结果和1984年春该地区进行的一次SF6示踪试验资料做了对比。计算浓度场采用了三种方法:一般网格的数值模式、套网格数值模式和正态模式。和实测值的比较表明,套网格模式给出较好的计算结果,并且不需要增加过多的计算时间。
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| 收稿时间： | 1986-05-20 |
| 修稿时间： | 1987-04-20 |
NUMERICAL SIMULATION OF TURBULENT DIFFUSION OVER A COMPLEX TERRAIN |
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| Sang Jianguo. 1988: NUMERICAL SIMULATION OF TURBULENT DIFFUSION OVER A COMPLEX TERRAIN. Acta Meteorologica Sinica, (2): 219-226. DOI: 10.11676/qxxb1988.027 |
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| Authors: | Sang Jianguo |
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| Affiliation: | 1.Department of Geophysics, Peking University |
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| Abstract: | A set of hydrostatic atmospheric thermo-dynamic equations and diffusion equation are solved numerically to simulate the flow,temperature and conceniration fields over Fenhe valley,Shanxi Province.The results are compared with the data observed in a tracer experiment carried out in Spring of 1984.The concentration distributions are calculated by three approaches:ordinary numerical grids model,nested grids model and Gaussian model.The comparison shows that the nested了grids model gives better results and heeds pnly a little more computer time |
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