| 三维球坐标系下波包非线性传播过程的一种数值求解方法 |
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| 引用本文： | 张绍东, 易帆, 熊东辉. 三维球坐标系下波包非线性传播过程的一种数值求解方法[J]. 空间科学学报, 2001, 21(1): 17-28. |
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| 作者姓名： | 张绍东 易帆 熊东辉 |
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| 作者单位： | 武汉大学无线电科学技术系 430072 |
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| 基金项目： | 国家杰出青年基金!（49625407），国家自然科学基金青年项目!（49904009）共同资助项目 |
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| 摘 要： | 采用全隐欧拉(FICE)格式,将三维球坐标系下的大气基本运动方程作为控制方程,建立起了三维球坐标系下可压大气中的全非线性数值模式;对纬向边界也进行了合理的处理,并对该模式进行了数值检验.计算结果显示出重力波波包在大气中非线性传播的三维图像:波包整体向上传播,波相关扰动速度随高度增加而增长.
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| 关 键 词： | 三维 球坐标系 FICE格式 |
| 收稿时间： | 2000-06-16 |
| 修稿时间： | 2000-06-16 |
A NUMERICAL SOLUTION METHOD OF NONLINEAR PROPAGATION OF GRAVITY-WAVE PACKET IN A 3-DIMENSIONAL SPHERICAL COORDINATE SYSTEM |
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| ZHANG Shaodong, YI Fan, XIONG Donghui. A NUMERICAL SOLUTION METHOD OF NONLINEAR PROPAGATION OF GRAVITY-WAVE PACKET IN A 3-DIMENSIONAL SPHERICAL COORDINATE SYSTEM[J]. Chinese Journal of Space Science, 2001, 21(1): 17-28. |
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| Authors: | ZHANG Shaodong YI Fan XIONG Donghui |
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| Affiliation: | Department of Radio Science and Technology, Wuhan University, 320072 |
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| Abstract: | By using FICE scheme and taking the atmospheric basic motion equations as the governing equations, a full-nonlinear numerical model in 3-dimensional spheric coordination is established, and a reasonable polar boundary is specified, the examination of this model is also presented. The calculation result exhibits the essential characteristics of the nonlinear propagation of gravity-wave packet in atmosphere: the whole wave packet propagates upward, the wave-associated disturbance velocity increases with the increasing height. |
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| Keywords: | dimension Global coordination FICE scheme |
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