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Simulations of moist convection by a variational multiscale stabilized finite element method.

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Title: Simulations of moist convection by a variational multiscale stabilized finite element method.
Authors: Marras, Simone1 simone.marras@bsc.es, Moragues, Margarida1 margarida.moragues@bsc.es, Vázquez, Mariano1,2 mariano.vazquez@bsc.es, Jorba, Oriol1, Houzeaux, Guillaume1
Source: Journal of Computational Physics. Nov2013, Vol. 252, p195-218. 24p.
Subjects: Simulation methods & models, Convective flow, Finite element method, Microphysics, Storms, Meteorological precipitation
Abstract: Abstract: 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. [Copyright &y& Elsevier]
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Database: Engineering Source
Description
Abstract:Abstract: 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. [Copyright &y& Elsevier]
ISSN:00219991
DOI:10.1016/j.jcp.2013.06.006