Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 12, issue 6
Articles | Volume 12, issue 6
https://doi.org/10.5194/gmd-12-2523-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-12-2523-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 6
Development and technical paper
 | 
28 Jun 2019
Development and technical paper |  | 28 Jun 2019

Vertically nested LES for high-resolution simulation of the surface layer in PALM (version 5.0)

Sadiq Huq, Frederik De Roo, Siegfried Raasch, and Matthias Mauder

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Short summary
To study turbulence in heterogeneous terrain, high-resolution LES is desired. However, the desired resolution is often restricted by computational constraints. We present a two-way interactive vertical grid nesting technique that enables high-resolution LES of the surface layer. By employing a finer grid only close to the surface layer, the total computational memory requirement is reduced. We demonstrate the accuracy and performance of the method for a convective boundary layer simulation.
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