Journal article
On the fidelity of large-eddy simulation of shallow precipitating cumulus convection
G Matheou, D Chung, L Nuijens, B Stevens, J Teixeira
Monthly Weather Review | Published : 2011
Abstract
The present study considers the impact of various choices pertaining to the numerical solution of the governing equations on large-eddy simulation (LES) prediction and the association of these choices with flow physics. These include the effect of dissipative versus nondissipative advection discretizations, different implementations of the constant-coefficient Smagorinsky subgrid-scale model, and grid resolution. Simulations corresponding to the trade wind precipitating shallow cumulus composite case of the Rain in Cumulus over the Ocean (RICO) field experiment were carried out. Global boundary layer quantities such as cloud cover, liquid water path, surface precipitation rate, power spectra..
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Awarded by Office of Naval Research
Awarded by NSF
Awarded by AFOSR
Funding Acknowledgements
We would like to acknowledge many fruitful discussions with Paul Dimotakis and Pier Siebesma. JT and GM acknowledge the support provided by the Office of Naval Research, Marine Meteorology Program under Award N0001408IP20064, and by the NASA MAP Program. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center. Simulations were also performed on the Shared Heterogeneous Cluster at the Center for Advanced Computing Research (CACR) at Caltech developed with cofunding by NSF MRI Grant EIA-0079871 and AFOSR Grant FA9550-07-1-0091 as part of a larger research effort on turbulent mixing. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.