期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 254, 期 -, 页码 184-199出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2013.07.027
关键词
Unstructured mesh atmospheric models; Nonoscillatory forward-in-time schemes; Anelastic equations; Orographic flows; Planetary boundary layers
资金
- Newton Institute
- DOE [DE-SC0006748, NERC/G004358]
- NSF [OCI-0904599]
- European Research Council under the European Union [320375]
- National Science Foundation
- Natural Environment Research Council [NE/G004358/1] Funding Source: researchfish
- NERC [NE/G004358/1] Funding Source: UKRI
- U.S. Department of Energy (DOE) [DE-SC0006748] Funding Source: U.S. Department of Energy (DOE)
A three-dimensional semi-implicit edge-based unstructured-mesh model is developed that integrates nonhydrostatic anelastic equations, suitable for simulation of small-to-mesoscale atmospheric flows. The model builds on nonoscillatory forward-in-time MPDATA approach using finite-volume discretization and admitting unstructured meshes with arbitrarily shaped cells. The numerical advancements are evaluated with canonical simulations of convective planetary boundary layer and strongly (stably) stratified orographic flows, epitomizing diverse aspects of highly nonlinear nonhydrostatic dynamics. The unstructured-mesh solutions are compared to equivalent results generated with an established structured-grid model and observation. (C) 2013 Elsevier Inc. All rights reserved.
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