A multiple resolution approach using adaptive grids for fully resolved boundary layers on deformable gas-liquid interfaces at high Schmidt numbers

Panda, A.; Patel, H.V.; Peters, E.A.J.F.; Kuipers, J.A.M.

doi:10.1016/j.ces.2020.115900

Cited by 10 publications

(2 citation statements)

References 37 publications

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“…A variety of modeling and simulation methods for gas–liquid systems considering all the scales was proposed in [ 18 ]. Other approaches focus on the behavior of the thin boundary layer at the discrete phase boundaries, dealing with the mass and heat transfer phenomena that occur there [ 19 ], or the collision of fluids droplets [ 20 ]. In the context of gas–solid flows, the particle-resolved direct numerical simulation of the microscale governing equations has been employed for understanding physics and obtaining quantitative information for meso/macroscale developments [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets

Giménez

Idelsohn

Oñate

et al. 2021

Arch Computat Methods Eng

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A multiscale approach for the detailed simulation of water droplets dispersed in a turbulent airflow is presented. The multiscale procedure combines a novel representative volume element (RVE) with the Pseudo Direct Numerical Simulation (P-DNS) method. The solution at the coarse-scale relies on a synthetic model, constructed using precomputed offline RVE simulations and an alternating digital tree, to characterize the non-linear dynamic response at the fine-scale. A set of numerical experiments for a wide range of volume fractions, particle distribution sizes, and external shear forces in the RVE are carried out. Quantitative results of the statistically stationary turbulent state are obtained, and the turbulence modulation phenomenon due to the presence of droplets is discussed. The developed synthetic model is then employed to solve global scale simulations of flows with airborne droplets via the P-DNS method. Improved predictions are obtained for flow conditions where turbulence modulation is noticeable.

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Section: Introductionmentioning

confidence: 99%

A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets

Giménez

Idelsohn

Oñate

et al. 2021

Arch Computat Methods Eng

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“…The effect of the bubble shape has been addressed by Figueroa-Espinoza and Legendre (2010) solving the Navier-Stokes equations coupled with advection-diffusion equation for Reynolds numbers larger than one for elliptic bubbles. This work has been extended by taking into account the bubble deformation using an arbitrary Lagrangian-Eulerian method by Jia et al (2019) or with a Volume of Fluid method by Panda et al (2020). The mass transfer is also strongly affected by the mobility of the interface between bubble and liquid.…”

Section: Introductionmentioning

confidence: 99%

Mass transfer around a rising bubble in a glass-forming liquid involving oxidation-reduction reaction: Numerical computation of the Sherwood number

Pigeonneau

Pereira

Laplace

2021

Chemical Engineering Science

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The mass transfer of a rising bubble in creeping flow regime is numerically investigated. A reversible oxidation-reduction reaction is taken into account. Two coupled equations are needed to study the oxygen and reduced species transport. Three dimensionless numbers are involved: the Péclet and Damköhler numbers and the ratio of the diffusion coefficient of the reduced species to the diffusion coefficient of oxygen. Numerical computations are applied to a soda-lime-silica and a borosilicate glass-forming liquids. Results are focused on the determination of the Sherwood number. The mass transfer enhances strongly when the chemical reaction is very fast, i.e. at large value of Damköhler number. Correlations to determine the enhancement factor are proposed in the two limits of small and large Péclet numbers. The Sherwood number enhances when the diffusion coefficient of the reduced species increases. A correlation of the Sherwood number is proposed taking into account advection and reaction.

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Multiscale Modeling of Multiphase Flows

Buist

Baltussen

Peters

et al. 2022

Multiphase Flows for Process Industries

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A multiple resolution approach using adaptive grids for fully resolved boundary layers on deformable gas-liquid interfaces at high Schmidt numbers

Cited by 10 publications

References 37 publications

A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets

A Multiscale Approach for the Numerical Simulation of Turbulent Flows with Droplets

Mass transfer around a rising bubble in a glass-forming liquid involving oxidation-reduction reaction: Numerical computation of the Sherwood number

Multiscale Modeling of Multiphase Flows

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