Modeling and numerical approximation of a 2.5D set of equations for mesoscale atmospheric processes

JOURNAL OF COMPUTATIONAL PHYSICS

卷:231

Article

Kalise, Dante¹  Lie, Ivar² 

[1] Univ Roma La Sapienza, Dipartimento Matemat, I-00185 Rome, Italy

[2] StormGeo AS, Dept Res & Dev, N-0164 Oslo, Norway

关键词: Primitive equations;    Layering;    Discontinuous Galerkin;    Upwind flux;    WENO-TVD schemes;    Test cases for dynamical cores;   

DOI  :  10.1016/j.jcp.2012.06.035

来源: Elsevier

【 摘 要 】

The set of 3D inviscid primitive equations for the atmosphere is dimensionally reduced by a Discontinuous Galerkin discretization in one horizontal direction. The resulting model is a 2D system of balance laws with a source term depending on the layering procedure and the choice of coupling fluxes, which is established in terms of upwind considerations. The 2.5D system is discretized via a WENO-TVD scheme based in a flux-limiter approach. We study four tests cases related to atmospheric phenomena to analyze the physical validity of the model. (C) 2012 Elsevier Inc. All rights reserved.

【 授权许可】

Free