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
CFD Simulation of Bubble Column Hydrodynamics with a Novel Drag Model Based on EMMS Approach
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Engineering Science"
DOI: 10.1016/j.ces.2021.116758
Abstract: Abstract Drag model is of critical importance for CFD simulation of flow characteristics in bubble columns. In this study, a novel drag model termed DBS-Local for the ratio of effective drag coefficient to bubble diameter… read more here.
Keywords: drag model; hydrodynamics; cfd simulation; model ... See more keywords
MP-PIC simulation of circulating fluidized beds using an EMMS based drag model for Geldart B particles
Sign Up to like & getrecommendations! Published in 2021 at "Particuology"
DOI: 10.1016/j.partic.2021.07.002
Abstract: Abstract In this study the multiphase particle-in-cell (MP-PIC) method is used for the simulation of two pilot-scale circulating fluidized beds (CFBs) with quartz sand belonging to Geldart’s group B as bed material. The simulations were… read more here.
Keywords: drag model; emms based; model; based drag ... 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
Evaluation of drag models for particles and powders with non-uniform size and shape
Sign Up to like & getrecommendations! Published in 2018 at "Powder Technology"
DOI: 10.1016/j.powtec.2018.02.036
Abstract: Abstract One of the key issues with the application of drag models for non-spherical particles is the incorporation of differently shaped particles. Under real world conditions, every single grain in a powder or granule has… read more here.
Keywords: drag models; shape; slag particles; particle ... See more keywords
3D CPFD simulations of gas-solids flow in a CFB downer with cluster-based drag model
Sign Up to like & getrecommendations! Published in 2020 at "Powder Technology"
DOI: 10.1016/j.powtec.2019.07.044
Abstract: Abstract The interactions of gas and solids are important in determining the flow structures in the Circulating Fluidized Bed (CFB) downer. Proper description of the interphase drag model is thus crucial for simulating the downer.… read more here.
Keywords: downer; drag model; gas solids; cfb downer ... See more keywords
Bubble-based EMMS/DP drag model for MP-PIC simulation
Sign Up to like & getrecommendations! Published in 2020 at "Powder Technology"
DOI: 10.1016/j.powtec.2020.06.023
Abstract: Abstract To account for the sub-grid heterogeneity of bubbling gas-solid flows in the multi-phase particle-in-cell (MP-PIC) method, a bubble-based EMMS/DP drag model is proposed in this work by taking into account the particle/parcel position information.… read more here.
Keywords: bubble based; model; emms drag; drag model ... See more keywords
Formation of drops and rings in double-diffusive sedimentation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.946
Abstract: We conduct numerical simulations to investigate the formation and evolution of drops and vortex rings of particle-laden fingers in double-diffusive convection in stably stratified environments. We show that the temporal evolution can be divided into… read more here.
Keywords: formation drops; double diffusive; drag model; drop ... See more keywords
Research on the Mechanism of Dam Bodies Piping Erosion Based on the DEM‐CFD Nonspherical Particle Drag Model
Sign Up to like & getrecommendations! Published in 2025 at "Advances in Civil Engineering"
DOI: 10.1155/adce/5801565
Abstract: This study aims to explore the evolution laws of particle migration and the force chain networks during the process of levee piping erosion. The stability of the dam body under different working conditions of particle… read more here.
Keywords: drag model; nonspherical particle; piping erosion; model ... See more keywords
Updating the Loth Drag Model to Include Nonspherical Particle Effects
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Spacecraft and Rockets"
DOI: 10.2514/1.a35969
Abstract: Sophisticated drag models have been developed over the past few decades that are based on ballistic range and other experimental data. These drag models are applicable over a wide range of particle-flow environments and include… read more here.
Keywords: drag model; nonspherical particle; particle; particle effects ... See more keywords
Drag Model for Nonspherical Particles in Supersonic Flow
Sign Up to like & getrecommendations! Published in 2025 at "AIAA Journal"
DOI: 10.2514/1.j065305
Abstract: A new drag model is developed for nonspherical particles in supersonic flow. The proposed model modifies a physics-based drag coefficient for a sphere in supersonic flow with an effective length scale that has been well… read more here.
Keywords: particles supersonic; drag model; supersonic flow; nonspherical particles ... See more keywords