Sub-grid Reaction Progress Variable Variance Closure in Turbulent Premixed Flames
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Data-driven deconvolution for large eddy simulations of Kraichnan turbulence
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
A simple sub-grid model for cosmic ray effects on galactic scales
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad976
Abstract: Many recent numerical studies have argued that cosmic rays (CRs) from supernovae (SNe) or active galactic nuclei (AGN) could play a crucial role in galaxy formation, in particular by establishing a CR-pressure dominated circum-galactic medium… read more here.
Keywords: effects galactic; model cosmic; simple sub; model ... See more keywords
Graphics process unit accelerated lattice Boltzmann simulation of indoor air flow: Effects of sub-grid scale model in large-eddy simulation
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"
DOI: 10.1177/0954406220919780
Abstract: In this present study, three-dimensional lattice Boltzmann method is implemented with the popular turbulence modeling method large-eddy simulation incorporating three different non-dynamic sub-grid scale models Smagorinsky, Vreman, and wall-adapting local eddy-viscosity for finding the inhomogeneous… read more here.
Keywords: grid scale; sub grid; graphics process; lattice boltzmann ... See more keywords