Cristin-resultat-ID: 1268135
Sist endret: 26. april 2016, 11:21
Resultat
Rapport
2006

Prediction errors associated with sparse grid estimates of local atmospheric flows

Bidragsytere:
  • Karl Johan Eidsvik

Utgiver/serie

Utgiver

SINTEF

Serie

SINTEF Rapport
ISSN 1504-9795

Om resultatet

Rapport
Publiseringsår: 2006
Hefte: A184
Antall sider: 17
ISBN: 8214040272
Open Access

Importkilder

SINTEF AS-ID: A184

Beskrivelse Beskrivelse

Tittel

Prediction errors associated with sparse grid estimates of local atmospheric flows

Sammendrag

Numerical simulations of geophysical flows have to be done on very sparse grids. This study show that moderately stratified flows can nevertheless be predicted usefully accurate. For better grids than about  ∆x1/H~0.5 or so, recirculating domains and the characteristic wavelength of lee waves are predicted accurately while the lee wave amplitude is predicted with considerable error. The relative error of the turbulence intensity is comparable to  δ √K / √K  ~ 0.25, which is comparable to the large scale flow error and the about as accurate as any turbulence model can be. Strongly stratified flows are predicted with considerable errors even on dense grids. Oppdragsgiver Avinor AS

Bidragsytere

Karl Johan Eidsvik

  • Tilknyttet:
    Forfatter
    ved Mathematics and Cybernetics ved SINTEF AS
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