Non‐hydrostatic atmospheric cut cell model on a block‐structured mesh | Zendy

Yamazaki Hiroe | Zendy; Satomura Takehiko | Zendy

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Non‐hydrostatic atmospheric cut cell model on a block‐structured mesh

Author(s) -

Yamazaki Hiroe,

Satomura Takehiko

Publication year - 2011

Publication title -

atmospheric science letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.951

H-Index - 45

ISSN - 1530-261X

DOI - 10.1002/asl.358

Subject(s) - cartesian coordinate system , advection , grid , hydrostatic equilibrium , conservation of mass , simple (philosophy) , block (permutation group theory) , regular grid , polygon mesh , computer science , matching (statistics) , curvilinear coordinates , flow (mathematics) , cube (algebra) , geometry , algorithm , mechanics , computational science , mathematics , physics , philosophy , statistics , epistemology , quantum mechanics , thermodynamics

A block‐structured Cartesian mesh approach based on the Building‐Cube Method is implemented into a 2D non‐hydrostatic atmospheric cut cell model to obtain high near‐ground resolution using Cartesian coordinates. A simple flux‐matching algorithm is introduced that ensures mass conservation across varying grid resolutions in a subcycling time integration. Results of simple diffusion and advection problems show that the method produces sufficiently accurate results with high computational efficiency. The developed model successfully reproduces a flow over a semicircular mountain on a locally refined mesh around the mountain. The result agrees well with that using a uniformly fine mesh. Copyright © 2011 Royal Meteorological Society

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