LES-like stabilization of spectral elements for the solution of the Euler equations of moist stratified flows
Giraldo, Francis X.
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The solution of the Euler equations by the spectral element method is prone to instabilities that must be damped in some way. We approach the problem of stabilization via an adaptive Large-Eddy-Simulation-like scheme meant to treat such instabilities by modeling the sub-grid scale features of the flow. This is a novel approach that is built on the recent work by Nazarov and Hoffman [1,2], who defined this scheme to capture turbulence in fully compressible flows resolved by adaptive finite elements. The novelty of our effort lies in its extension to high order spectral elements for low Mach number stratified flows. This work is a step toward the implementation of an LES model within the Nonhydrostatic Unified Model of the Atmosphere (NUMA) [3,4]. The method and the results reported in this poster are detailed in .
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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