Subgrid parameterisations for high resolution atmospheric flows

V. Kitsios; J. S. Frederiksen; Meelis Juma Zidikheri

Subgrid parameterisations for high resolution atmospheric flows

V. Kitsios, J. S. Frederiksen, Meelis Juma Zidikheri

Research output: Contribution to journal › Article › Research › peer-review

Abstract

Numerical and computational methods are developed for the Large Eddy Simulation of atmospheric ows on a sphere with a spectral quasi-geostrophic model. The subgrid scales of motion are parameterised us-ing a net eddy viscosity that is derived from a high resolution reference Direct Numerical Simulation with 504 zonal and total wavenumbers or 1536 × 768 grid points (longitude by latitude). Simulations are undertaken for a wide range of truncation wavenumbers to determine the influence of resolution on the net eddy viscosity. A universal scaling law for these coeffcients is established for application to large eddy simulations of more general geophysical flows.

Original language	English
Journal	The ANZIAM Journal
Volume	52
Publication status	Published - 2010
Externally published	Yes

Cite this

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abstract = "Numerical and computational methods are developed for the Large Eddy Simulation of atmospheric ows on a sphere with a spectral quasi-geostrophic model. The subgrid scales of motion are parameterised us-ing a net eddy viscosity that is derived from a high resolution reference Direct Numerical Simulation with 504 zonal and total wavenumbers or 1536 × 768 grid points (longitude by latitude). Simulations are undertaken for a wide range of truncation wavenumbers to determine the influence of resolution on the net eddy viscosity. A universal scaling law for these coeffcients is established for application to large eddy simulations of more general geophysical flows.",

author = "V. Kitsios and Frederiksen, \{J. S.\} and Zidikheri, \{Meelis Juma\}",

year = "2010",

language = "English",

volume = "52",

journal = "The ANZIAM Journal",

issn = "1446-1811",

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T1 - Subgrid parameterisations for high resolution atmospheric flows

AU - Kitsios, V.

AU - Frederiksen, J. S.

AU - Zidikheri, Meelis Juma

PY - 2010

Y1 - 2010

N2 - Numerical and computational methods are developed for the Large Eddy Simulation of atmospheric ows on a sphere with a spectral quasi-geostrophic model. The subgrid scales of motion are parameterised us-ing a net eddy viscosity that is derived from a high resolution reference Direct Numerical Simulation with 504 zonal and total wavenumbers or 1536 × 768 grid points (longitude by latitude). Simulations are undertaken for a wide range of truncation wavenumbers to determine the influence of resolution on the net eddy viscosity. A universal scaling law for these coeffcients is established for application to large eddy simulations of more general geophysical flows.

AB - Numerical and computational methods are developed for the Large Eddy Simulation of atmospheric ows on a sphere with a spectral quasi-geostrophic model. The subgrid scales of motion are parameterised us-ing a net eddy viscosity that is derived from a high resolution reference Direct Numerical Simulation with 504 zonal and total wavenumbers or 1536 × 768 grid points (longitude by latitude). Simulations are undertaken for a wide range of truncation wavenumbers to determine the influence of resolution on the net eddy viscosity. A universal scaling law for these coeffcients is established for application to large eddy simulations of more general geophysical flows.

UR - https://www.scopus.com/pages/publications/84870883307

M3 - Article

AN - SCOPUS:84870883307

SN - 1446-1811

VL - 52

JO - The ANZIAM Journal

JF - The ANZIAM Journal

ER -

Subgrid parameterisations for high resolution atmospheric flows

Abstract

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Cite this