Evaluating Implementations of the Immersed Boundary Method in the Weather Research and Forecasting Model

The terrain-following coordinate system used by many atmospheric models can cause numerical instabilities due to discretization errors as resolved terrain slopes increase and the grid becomes highly skewed. The immersed boundary (IB) method, which does not require the grid to conform to the terrain,...

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Veröffentlicht in:	Monthly weather review 2020-05, Vol.148 (5), p.2087-2109
Hauptverfasser:	Arthur, Robert S., Lundquist, Katherine A., Wiersema, David J., Bao, Jingyi, Chow, Fotini K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Aspect ratio Atmospheric boundary layer Atmospheric models Boundary conditions complex terrain Computer simulation Coordinate systems Coordinates ENVIRONMENTAL SCIENCES Errors large eddy simulations Methods Performance evaluation Ratios Reconstruction Resolution Shear stress Similarity theory Simulation Studies surface layer Surface velocity Terrain following Turbulence models Velocity Velocity errors Weather forecasting
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