Heat transfer in droplet-laden turbulent channel flow with phase transition in the presence of a thin film of water

Bukhvostova, A; Kuerten, Johannes G.M.; Geurts, BJ Bernard

doi:10.1016/j.ijheatfluidflow.2016.04.007

Cited by 3 publications

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“…To this purpose, the revised and the classical D 2 -laws are compared to reference data obtained from direct numerical simulations (DNSs) under a hybrid Eulerian-Lagrangian framework and the point-droplet approximation. [15][16][17] The temporal evolution of droplets smaller than the smallest flow length scale can be Lagrangianly described using the socalled point-droplet approximation. 15,17 Indeed, droplet temperature and radius equations read…”

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Revisiting D2-law for the evaporation of dilute droplets

2021

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In a wide range of applications, the estimate of droplet evaporation time is based on the classical D 2 -law, which, assuming a fast mixing and fixed environmental properties, states that the droplet surface decreases linearly with time at a determined rate. However, in many cases the predicted evaporation rate is overestimated. In this Letter, we propose a revision of the D 2 -law capable of accurately determining droplet evaporation rate in dilute conditions by a proper estimate of the asymptotic droplet properties. Besides a discussion of the main assumptions, we tested the proposed model against data from direct numerical simulations finding an excellent agreement for predicted droplet evaporation time in dilute turbulent jet-sprays.

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Revisiting D2-law for the evaporation of dilute droplets

2021

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A Comparative Study of Entropy Generation Analysis Through Cartesian and Cylindrical Annulus Geometries

Sakly

Saïd

2022

ASME Journal of Heat and Mass Transfer

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The research paper presents a comparative study dealing with entropy generation analysis in Cartesian and cylindrical annulus geometries. This numerical investigation involves heat and mass transfer coupled with forced convection and gas radiation in a semi-transparent medium during the evaporation of a thin liquid film. The systems of equations are solved with interfacial and boundary conditions using an implicit finite volume method by the Tridiagonal Matrix Algorithm method. The Radiative Transfer Equation (RTE) was solved by the Ray tracing model. The Statistical Narrow Band Correlated-K model (SNBCK) with the updated model parameters was applied to calculate the gas transmissivity. The main intent of this paper is to compare the entropy generation components in two different configurations. The result shows that the entropy generation related to heat and mass transfer in the channel is higher than that estimated for the cylindrical annulus. Regarding optimal design selection, the entropy generation analysis, detailed in this paper, suggests a preference for the cylindrical annulus geometry. Our results may guide designers to select from the studied configuration.

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Heat and mass transfer in turbulent multiphase channel flow

Bukhvostova¹

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Heat transfer in droplet-laden turbulent channel flow with phase transition in the presence of a thin film of water

Cited by 3 publications

References 25 publications

Revisiting D2-law for the evaporation of dilute droplets

Revisiting D2-law for the evaporation of dilute droplets

A Comparative Study of Entropy Generation Analysis Through Cartesian and Cylindrical Annulus Geometries

Heat and mass transfer in turbulent multiphase channel flow

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