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Interfacial Phenomena and Heat Transfer

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ISSN Druckformat: 2169-2785

ISSN Online: 2167-857X

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NUMERICAL STUDY OF DISPLACEMENT OF DROPLET IN A CHANNEL BY LATTICE BOLTZMANN METHOD

Volumen 7, Ausgabe 1, 2019, pp. 47-56
DOI: 10.1615/InterfacPhenomHeatTransfer.2019030498
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ABSTRAKT

Displacement of an immiscible droplet subject to gravitational force in a channel is studied numerically by the lattice Boltzmann method. Dynamic behavior of the droplet is illustrated and the influence of gravitational coefficients, contact angles, and droplet size on the wetting length is analyzed. For θ = 57.0°, the wetting length of the droplet increases with the time step and finally pinches off. For θ = 88.8° and 113.8°, the wetting length for both decreases with the time step, but it will decrease to zero and detach from the surface for 113.8°, which is different from 88.8°. Furthermore, the gravitational coefficient has a significant influence on the wetting length. In the case of θ = 57.0°, the wetting length increases with the increase in gravitational coefficient. As it increases to 0.002, the droplet pinches off. It is easier for the droplet with θ = 113.8° to detach from the surface. The larger droplet radius is beneficial for detaching from the surface for θ = 113.8° and the wetting length is extended for θ = 57.0° and θ = 88.8°.

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REFERENZIERT VON
  1. Antonov Dmitrii V., Fedorenko Roman M., Strizhak Pavel A., TWO-DIMENSIONAL SIMULATION OF COLLISION BETWEEN LIQUID DROPLET: DETERMINING THE CONDITIONS OF INTENSE SECONDARY ATOMIZATION , Interfacial Phenomena and Heat Transfer, 10, 1, 2022. Crossref

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