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Kinetic modelling of evaporation and condensation phenomena around a spherical droplet

Abstract : The steady evaporation and condensation phenomena around a spherical droplet of the condensed phase of a vapor are investigated with basis on a kinetic model to the linearized Boltzmann equation. The kinetic equation is solved via a discrete velocity method which takes into account the discontinuity of the distribution function of molecular velocities on the spherical interface. The calculations are carried out in a wide range of the gas rarefaction and evaporation-condensation coefficient. The results obtained via solution of the linearized Navier-Stokes equations with temperature and pressure jump boundary conditions are also presented and compared to those obtained via kinetic equation. A comparison between the linearized and nonlinear solutions of the kinetic model is also presented to show the limit of applicability of the linearized approach.
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https://hal-amu.archives-ouvertes.fr/hal-03103092
Contributor : Irina Graur <>
Submitted on : Thursday, January 7, 2021 - 10:54:24 PM
Last modification on : Saturday, January 9, 2021 - 3:26:27 AM
Long-term archiving on: : Thursday, April 8, 2021 - 8:06:27 PM

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Vinícius Leite, Denize Kalempa, Irina Graur. Kinetic modelling of evaporation and condensation phenomena around a spherical droplet. International Journal of Heat and Mass Transfer, Elsevier, 2020, pp.120719. ⟨10.1016/j.ijheatmasstransfer.2020.120719⟩. ⟨hal-03103092⟩

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