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   Articles with "sub grid" as a keyword



Evaluation of different sub‐grid orographic drag schemes on typhoon precipitation in Northeast China in the Weather Research and Forecasting model

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recommendations! Published in 2025 at "Quarterly Journal of the Royal Meteorological Society"

DOI: 10.1002/qj.70004

Abstract: This study evaluated the effects of different sub‐grid orographic drag schemes in the Weather Research and Forecasting (WRF) model, selecting as case studies the typhoons Bavi and Haishen in Northeast China. The results demonstrated that… read more here.

Keywords: different sub; orographic drag; precipitation; drag ... See more keywords

Sub-grid Reaction Progress Variable Variance Closure in Turbulent Premixed Flames

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recommendations! Published in 2019 at "Flow, Turbulence and Combustion"

DOI: 10.1007/s10494-020-00121-5

Abstract: The statistical behaviour and modelling of the sub-grid variance of reaction progress variable have been analysed based on a priori analysis of Direct Numerical Simulation (DNS) data of freely propagating statistically planar turbulent premixed flames… read more here.

Keywords: sub grid; reaction progress; variance; progress variable ... See more keywords

Impact of Change in Monsoonal Circulation Due to SST Warming on the North East Asian Monsoon: A Model Analysis Using Satellite Based Sub-Grid Hydrometeors

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recommendations! Published in 2018 at "Asia-Pacific Journal of Atmospheric Sciences"

DOI: 10.1007/s13143-018-0067-2

Abstract: Over the North East Asia, extreme anomalous precipitation were observed in 2013 and 2014. During 2013 summer the precipitation was found to be higher (two standard deviation) than the climatological mean of the region; whereas… read more here.

Keywords: sub grid; north east; monsoon; model ... See more keywords

Multi-scale CFD modeling of gas-solid bubbling fluidization accounting for sub-grid information

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recommendations! Published in 2018 at "Advanced Powder Technology"

DOI: 10.1016/j.apt.2018.02.024

Abstract: Abstract An improved bubble-based heterogeneous drag model was formulated in which the original bubble-based EMMS drag model at macroscale bed level was extended to microscale sub-grid level for accurate coarse-grid two-fluid modeling (TFM) of Geldart… read more here.

Keywords: bubble based; sub grid; bubbling fluidization; drag model ... See more keywords

An effective three-marker drag model via sub-grid modeling for turbulent fluidization

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recommendations! Published in 2018 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2018.08.026

Abstract: Abstract The effect of meso-scale structures on hydrodynamic predictions is not considered in the classically uniform drag models when the coarse grid is used. To address this issue, this study tries to develop an effective… read more here.

Keywords: three marker; sub grid; effective three; model ... See more keywords

Capability assessment of coarse-grid simulation of gas-particle riser flow using sub-grid drag closures

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recommendations! Published in 2020 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2019.115410

Abstract: Abstract Our prior work developed an effective material-property-dependent sub-grid model (SGM) for efficient coarse-grid riser flow simulations. To apply this SGM for the purpose of designing and scaling-up riser reactors reliably, quantitative assessment in its… read more here.

Keywords: sub grid; coarse; riser flow; coarse grid ... See more keywords

Sub-grid drag model for immersed vertical cylinders in fluidized beds

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recommendations! Published in 2017 at "Powder Technology"

DOI: 10.1016/j.powtec.2016.12.044

Abstract: Abstract Immersed vertical cylinders are often used as heat exchanger in gas-solid fluidized beds. Computational Fluid Dynamics (CFD) simulations are computationally expensive for large scale systems with bundles of cylinders. Therefore sub-grid models are required… read more here.

Keywords: sub grid; vertical cylinders; drag; grid drag ... See more keywords

Sub-grid-scale effects in magnetised plasma turbulence

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recommendations! Published in 2021 at "Journal of Plasma Physics"

DOI: 10.1017/s0022377821000180

Abstract: In the present paper, we use a coarse-graining approach to investigate the nonlinear redistribution of free energy in both position and scale space for weakly collisional magnetised plasma turbulence. For this purpose, we use high-resolution… read more here.

Keywords: turbulence; space; plasma turbulence; energy ... See more keywords

Improving Global Barotropic Tides With Sub‐Grid Scale Topography

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recommendations! Published in 2024 at "Journal of Advances in Modeling Earth Systems"

DOI: 10.1029/2023ms004056

Abstract: In recent years, efforts have been made to include tides in both operational ocean models as well as climate and earth system models. The accuracy of the barotropic tides is often limited by the model… read more here.

Keywords: topography; grid scale; scale topography; model ... See more keywords

Data-driven deconvolution for large eddy simulations of Kraichnan turbulence

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recommendations! Published in 2018 at "Physics of Fluids"

DOI: 10.1063/1.5079582

Abstract: In this article, we demonstrate the use of artificial neural networks as optimal maps which are utilized for convolution and deconvolution of coarse-grained fields to account for sub-grid scale turbulence effects. We demonstrate that an… read more here.

Keywords: large eddy; framework; sub grid; turbulence ... See more keywords

Stochastic forcing for sub-grid scale models in wall-modeled large-eddy simulation

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recommendations! Published in 2021 at "Physics of Fluids"

DOI: 10.1063/5.0063728

Abstract: In the framework of wall-modeled large-eddy simulation (WMLES), the problem of combining sub-grid scale (SGS) models with the standard wall law is commonly acknowledged and expressed through multiple undesired near-wall behaviors. In this work, it… read more here.

Keywords: large eddy; wall modeled; modeled large; sub grid ... See more keywords