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On the synergy between numerics and subgrid scale modeling in LES of stratified flows: grid convergence of a stratocumulus-topped boundary layer

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dc.contributor.author Matheou, Georgios
dc.contributor.author Chung, Daniel
dc.contributor.author Teixeira, Joao
dc.date.accessioned 2019-05-28T21:29:35Z
dc.date.available 2019-05-28T21:29:35Z
dc.date.issued 2016-08-29
dc.identifier.citation 8th International Symposium on Stratified Flows, San Diego, California, August 29 - September 1, 2016 en_US
dc.identifier.clearanceno 16-3414
dc.identifier.uri http://hdl.handle.net/2014/46171
dc.description.abstract The effectiveness of a linear upwinding scalar advection scheme to suppress numerical dispersion errors near sharp inversions in large-eddy simulations of a nocturnal stratocumulus-topped boundary layer is assessed. Linear upwinding is a trade-off between non-dissipative and non-linear positive definite advection schemes. It is shown that linear upwinding does not negatively impact the model's grid convergence properties and a sharp inversion free of numerical artifacts is maintained. Even though mean profiles and turbulence fluxes show good grid convergence characteristics the liquid water amount varies significantly with grid resolution. The entrainment rate is identical for all resolutions and independent of the liquid water amount. For the present stratocumulus case, the impact of cloud-top radiative cooling is negligible and turbulence is largely driven by convection emanating from the surface. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.title On the synergy between numerics and subgrid scale modeling in LES of stratified flows: grid convergence of a stratocumulus-topped boundary layer en_US
dc.type Preprint en_US


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