Adaptive mesh refinement of gas–liquid flow on an inclined plane

Cooke, Jason; Armstrong, Lindsay-Marie; Luo, Kai; Gu, Sai

doi:10.1016/j.compchemeng.2013.09.007

Cited by 17 publications

(4 citation statements)

References 24 publications

(42 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the work carried out at this scale is still focused in the hydrodynamics aspects. Cooke et al (2014) aimed to improve the description of the hydrodynamics by using local adaptive mesh refinement (AMR) at the gas-liquid interface, reducing significantly the calculation time. Table 1 summarizes the conclusions from the work carried out so far.…”

Section: Introductionmentioning

confidence: 99%

Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials

Sebastia‐Saez

Ranganathan

et al. 2015

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

Post-combustion carbon capture in structured packing columns is considered as a promising technology to reduce greenhouse gas (GHG) emissions because of its maturity and the possibility of being retrofitted to existing power plants. CFD plays an important role in the optimization of this technology. However, due to the current computational capacity limitations, the simulations need to be divided into three scales (i.e. micro-, meso- and macro-scale) depending on the flow characteristics to be analyzed. This study presents a 3D micro-scale approach to describe the hydrodynamics and reactive mass transfer of the CO2-MEA chemical system within structured packing materials. Higbie's penetration theory is used to describe the mass transfer characteristics whereas enhancement factors are implemented to represent the gain in the absorption rate attributable to the chemical reaction. The results show a detrimental effect of the liquid load on the absorption rate via a decrease in the enhancement factor. The evolution of the wetted area for MEA solutions is compared to the case of pure water highlighting the differences in the transient behavior. The CO2 concentration profiles are examined showing the capability of the model to reproduce the depletion of the solute within the bulk liquid ascribed to the high value of the Hatta number. Also, several approaches on the reaction mechanism such as reversibility and instantaneous behavior are assessed. The results from micro-scale are to be used in meso-scale analysis in future studies to optimize the reactive absorption characteristics of structured packing materials

show abstract

Section: Introductionmentioning

confidence: 99%

Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials

Sebastia‐Saez

Ranganathan

et al. 2015

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

show abstract

“…14a). This method splits the computational cell when the volume fraction of fluid satisfies ε f,min < ε f < ε f,max [65]. The volume fraction of fluid ε f is then recalculated for the refined cells with higher resolution before the start of the simulation.…”

Section: Meshingmentioning

confidence: 99%

Improved Volume-of-Solid formulations for micro-continuum simulation of mineral dissolution at the pore-scale

Maes¹,

Soulaine²,

Menke³

2022

Preprint

View full text Add to dashboard Cite

We present two novel Volume-of-Solid (VoS) formulations for micro-continuum simulation of mineral dissolution at the pore-scale. The traditional VoS formulation (VoS-ψ) uses a diffuse interface localization function ψ to ensure stability and limit diffusion of the reactive surface. The main limitation of this formulation is that accuracy is strongly dependent on the choice of the localization function. Our first novel improved formulation (iVoS) uses the divergence of a reactive flux to localize the reaction at the fluid-solid interface, so no localization function is required. Our second novel formulation (VoS-ψ') uses a localization function with a parameter that is fitted to ensure that the reactive surface area is conserved globally. Both novel methods are validated by comparison with experiments, numerical simulations using an interface tracking method based on the Arbitrary Eulerian Lagrangian (ALE) framework, and numerical simulations using the VoS-ψ. All numerical methods are implemented in GeoChemFoam, our reactive transport toolbox and three benchmark test cases in both synthetic and real pore geometries are considered: (1) dissolution of a calcite post by acid injection in a microchannel and experimental comparison, (2) dissolution in a 2D polydisperse disc micromodel at different dissolution regimes and (3) dissolution in a Ketton carbonate rock sample and comparison to in-situ micro-CT experiments. We find that the iVoS results match accurately experimental results and simulation results obtained with the ALE method, while the VoS-ψ method leads to inaccuracies that are mostly corrected by the VoS-ψ' formulation. In addition, the VoS methods are significantly faster than the ALE method, with a speed-up factor of between 2 and 12.

show abstract

“…The use of adaptive mesh refinement has been explored in the literature in the past for a wide variety of applications, including turbulent non-premixed combustion 2 , liquid sprays/jets 3,4 and others 5,6,7,8,9,10,11 . Nevertheless, despite the high potential of reduction in computing times, only few researchers have investigated the use of AMR in fire applications 12,13,14 .…”

Section: Introductionmentioning

confidence: 99%

“…The use of adaptive mesh refinement has been explored in the literature in the past for a wide variety of applications, including turbulent non-premixed combustion, 2 liquid sprays/jets 3,4 and others. [5][6][7][8][9][10][11] Nevertheless, despite the high potential of reduction in computing times, only few researchers have investigated the use of AMR in fire applications. [12][13][14] Within this context, the present work is rather novel and aims to further pursue the application of AMR in scenarios involving turbulent buoyant flows.…”

Section: Introductionmentioning

confidence: 99%

Analysis of adaptive mesh refinement in a turbulent buoyant helium plume

Maragkos

Funk

Merci

2022

Numerical Methods in Fluids

View full text Add to dashboard Cite

The study evaluates OpenFOAM's adaptive mesh refinement (AMR) capabilities and accuracy when applied to numerical simulations of turbulent buoyant flows. To this purpose, large eddy simulations of Sandia's turbulent helium plume test case are considered, a scenario with similar characteristics (in terms of air entrainment and vortex shedding) to those encountered in large-scale fires. Comparison is made of the relative accuracy (in terms of both first and second order statistics), the predicted puffing frequencies and the computing times of numerical simulations using AMR and static meshes. Additionally, a sensitivity study on different AMR parameters is conducted and an evaluation of the performance of the dynamic Smagorinsky model when combined with AMR is made. Overall, the predictions of AMR are very satisfactory, in terms of both accuracy and computing times, compared to the use of static meshes of different sizes. Nevertheless, it is observed that a careful choice of a static mesh can result in equally accurate predictions with comparable, or even smaller, computing times than AMR for the case at hand. Additionally, the use of AMR slightly modified the entrainment characteristics in the near-field region of the plume and (significantly) altered some of the, dynamically determined, turbulence model parameters.

show abstract

Adaptive mesh refinement of gas–liquid flow on an inclined plane

Cited by 17 publications

References 24 publications

Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials

Micro-scale CFD modeling of reactive mass transfer in falling liquid films within structured packing materials

Improved Volume-of-Solid formulations for micro-continuum simulation of mineral dissolution at the pore-scale

Analysis of adaptive mesh refinement in a turbulent buoyant helium plume

Contact Info

Product

Resources

About