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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

STUDY ON MASS TRANSFER ON GAS-LIQUID INTERFACE USING LATTICE BOLTZMANN METHOD

Get access (open in a dialog) DOI: 10.1615/IHTC16.mpf.023701
pages 6807-6820

Аннотация

The concentration distribution and mass transfer flux on the gas-liquid interface was investigated by using Lattice Boltzmann Method (LBM). In this research, the Z-S-C model was adopted to calculate the velocity distribution and track the interface, and the double-distribution-function was developed to simulate the mass transfer process of convection and diffusion. The wake can be found during the rising and coalescence of bubbles in the results, the position of which is affected by the diameter, viscosity, surface tension and diffusion coefficient of bubbles. Two symmetrical wakes can be observed at the both side of the bubble at the situation of increasing the diameter, or decreasing the diffusion coefficient, surface tension, viscosity, on the contrary, one wake can be observed at the axis. The diameter and diffusion coefficient have greater effect on interface mass transfer flux than the surface tension and viscosity. With the increasing of the bubble's velocity, the mass transfer flux increase quickly because of the transforming from diffusion to convection.