Simulations of moist convection by a variational multiscale stabilized finite element method
Simulations of moist convection by a variational multiscale stabilized finite element method
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用变分多尺度稳定有限元法模拟湿对流
DOI：
10.1016/j.jcp.2013.06.006
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
G. Houzeaux
中科院分区：
文献类型：
--
作者：
S. Marras;M. Moragues;M. Vázquez;O. Jorba;G. Houzeaux
本文提出了一种求解湿大气流动的变分多尺度稳定化有限元格式。完全可压缩的欧拉方程耦合到一个系统的三个平流方程，模拟在大气中的水量传输。一个凯斯勒型参数化的微物理过程的暖雨。由于这个问题的解析解是不可用的，该模型进行评估与文献中提出的类似的模拟比较。评估的指标是风暴的强度和空间分布，其持续时间，降水的位置，以及在不同的网格分辨率的水积累。目前的模式是能够捕捉到的二维对流风暴和地形云的主要特征，在网格尺度典型的中尺度大气模拟。
A variational multiscale stabilized finite element scheme is presented for the solution of moist atmospheric flows. The fully compressible Euler equations are coupled to a system of three advection equations that model the transport of water quantities in the atmosphere. A Kessler-type parametrization of microphysical processes of warm rain is used. Because analytic solutions to this problem are not available, the model is assessed by comparison with similar simulations presented in the literature. The metrics for evaluation are the intensity and spatial distribution of the storm, its duration, the location of precipitation, and water accumulation at different grid resolutions. The current model is able to capture the principal features of two-dimensional convective storms and orographic clouds at the grid scales typical of mesoscale atmospheric simulations.