Addressing the Grid-Size Sensitivity Issue in Large-Eddy Simulations of Stable Boundary Layers

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Yi Dai
  • Sukanta Basu
  • Björn Maronga
  • Stephan R. de Roode

Organisationseinheiten

Externe Organisationen

  • University of Bergen (UiB)
  • Delft University of Technology
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Details

OriginalspracheEnglisch
Seiten (von - bis)63-89
Seitenumfang27
FachzeitschriftBoundary-Layer Meteorology
Jahrgang178
Ausgabenummer1
Frühes Online-Datum24 Aug. 2020
PublikationsstatusVeröffentlicht - Jan. 2021

Abstract

We have identified certain fundamental limitations of a mixing-length parametrization used in a popular turbulent kinetic energy-based subgrid-scale model. Replacing this parametrization with a more physically realistic one significantly improves the overall quality of the large-eddy simulation (LES) of stable boundary layers. For the range of grid sizes considered here (specifically, 1 m–12.5 m), the revision dramatically reduces the grid-size sensitivity of the simulations. Most importantly, the revised scheme allows us to reliably estimate the first- and second-order statistics of a well-known LES intercomparison case, even with a coarse grid size of O(10 m).

ASJC Scopus Sachgebiete

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Addressing the Grid-Size Sensitivity Issue in Large-Eddy Simulations of Stable Boundary Layers. / Dai, Yi; Basu, Sukanta; Maronga, Björn et al.
in: Boundary-Layer Meteorology, Jahrgang 178, Nr. 1, 01.2021, S. 63-89.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Dai Y, Basu S, Maronga B, de Roode SR. Addressing the Grid-Size Sensitivity Issue in Large-Eddy Simulations of Stable Boundary Layers. Boundary-Layer Meteorology. 2021 Jan;178(1):63-89. Epub 2020 Aug 24. doi: 10.1007/s10546-020-00558-1
Dai, Yi ; Basu, Sukanta ; Maronga, Björn et al. / Addressing the Grid-Size Sensitivity Issue in Large-Eddy Simulations of Stable Boundary Layers. in: Boundary-Layer Meteorology. 2021 ; Jahrgang 178, Nr. 1. S. 63-89.
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