Changes between Version 19 and Version 20 of doc/tec/sgs
- Timestamp:
- Apr 7, 2020 5:09:19 AM (5 years ago)
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doc/tec/sgs
v19 v20 1 1 = Subgrid-scale Model = 2 2 3 One of the main challenges in LES modeling is the turbulence closure. The filtering process yields four SGS covariance terms (see the first five equations Sect. [wiki:doc/tec/gov governing equations]) that cannot be explicitly calculated. In PALM, t wodifferent subgrid-scale models are available to parameterize the SGS terms:3 One of the main challenges in LES modeling is the turbulence closure. The filtering process yields four SGS covariance terms (see the first five equations Sect. [wiki:doc/tec/gov governing equations]) that cannot be explicitly calculated. In PALM, three different subgrid-scale models are available to parameterize the SGS terms: 4 4 * [#deardorff_sgs Deardorff subgrid-scale model] 5 * [#deardorff_sgs Deardorff subgrid-scale model (modified)] 5 6 * [#dynamic_sgs Dynamic subgrid-scale model] 6 which are described below. 7 7 8 8 9 Selecting one of the available SGS models is done via the namelist parameter [/wiki/doc/app/inipar#turbulence_closure turbulence_closure]. … … 196 197 == References == 197 198 198 * [= dai]'''Dai, Y., Basu, S., Maronga, B., de Roode, SR.''' 2020. Addressing the Grid-size Sensititivty Issue in Large-eddy Simulations of Stable Boundary Layers. Boundary-layer Meteorol., submitted. http://arxiv.org/abs/2003.09463.199 * [=#dai]'''Dai, Y., Basu, S., Maronga, B., de Roode, SR.''' 2020. Addressing the Grid-size Sensititivty Issue in Large-eddy Simulations of Stable Boundary Layers. Boundary-layer Meteorol., submitted. http://arxiv.org/abs/2003.09463. 199 200 200 201 * [=#deardorff]'''Deardorff JW.''' 1980. Stratocumulus-capped mixed layers derived from a three-dimensional model. Bound.-Lay. Meteorol. 18: 495–527.