| 大气切变对流的数值研究 |
| |
| 引用本文： | 谢君樑,刘伟.大气切变对流的数值研究[J].中国科学技术大学学报,2007,37(11):1348-1356. |
| |
| 作者姓名： | 谢君樑 刘伟 |
| |
| 作者单位： | 中国科学技术大学数学系,安徽合肥,230026 |
| |
| 基金项目： | The authors gratefully acknowledge the help of Hp-High Performance Computing Center of USTC. |
| |
| 摘 要： | 利用二维数值计算,对大气的切变对流进行了研究.流场包括一个平流层顶的射流,其下有一个热不稳定层.用不同的参数代表不同的切变和温度不稳定性,对流场进行模拟,并和在没有风切变下的情况比较.发现对流顶部的射流会形成一种障碍,把穿透阻挡,恰如"切变障碍"理论所描述的一样;此外,当切变加强,所产生的重力波的振幅也随之增大.
|
| 关 键 词： | 切变对流 穿透对流 屏障效应 |
| 文章编号： | 0253-2778（2007）11-1348-09 |
| 收稿时间： | 2006-12-15 |
| 修稿时间： | 2007-02-10 |
Numerical studies on the effect of shear on atmospheric convection |
| |
| TSE Kwan-leung,LIU Wei.Numerical studies on the effect of shear on atmospheric convection[J].Journal of University of Science and Technology of China,2007,37(11):1348-1356. |
| |
| Authors: | TSE Kwan-leung LIU Wei |
| |
| Abstract: | Shear-convective turbulence was studied using 2D numerical simulation.Flow configuration consists of a modeled jet capping a thermally unstable layer.Different values of shear and thermal instability were used and the simulated results were compared with the reference situations where only the convective layer was present.With capping jet,a mechanical barrier in a way similar to the shear-sheltering effect was formed blocking the convective penetration.However,more intensive gravity waves was generated as the shear increases. |
| |
| Keywords: | shear-convective turbulence penetrative convection sheltering effect |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
