Articles | Volume 5, issue 4
Wind Energ. Sci., 5, 1469–1485, 2020
https://doi.org/10.5194/wes-5-1469-2020

Special issue: Flow in complex terrain: the Perdigão campaigns (WES/ACP/AMT...

Wind Energ. Sci., 5, 1469–1485, 2020
https://doi.org/10.5194/wes-5-1469-2020

Research article 05 Nov 2020

Research article | 05 Nov 2020

The digital terrain model in the computational modelling of the flow over the Perdigão site: the appropriate grid size

José M. L. M. Palma et al.

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Short summary
The digital terrain model is the first input in the computational modelling of atmospheric flows. The ability of thee meshes (high-, medium- and low-resolution) to replicate the Perdigão experiment site was appraised in two ways: by their ability to replicate the terrain attributes, elevation and slope and by their effect on the wind flow computational results. At least 40 m horizontal resolution is required in computational modelling of the flow over Perdigão.