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Lattice Boltzmann simulation of seawater boiling in the presence of non-condensable gas

机译：不凝性气体存在下海水沸腾的格子Boltzmann模拟

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摘要

In this study, three-dimensional (3D) boiling of seawater containing non-condensable gas (NCG) was simulated using the modified pseudopotential lattice Boltzmann model for multiphase multicomponent flow, and the effects of wettability and the NCG concentration on the heat flux between the heat source and its adjacent fluids, bubble departure period and diameter were analyzed. The simulation results show that, with an increase in the NCG concentration, the heat flux, bubble departure period and diameter decreased, while the effect of NCG on the bubble departure diameter and period plateaued as contact angle proceeded. Additionally, the boiling mechanisms of seawater containing NCG in a horizontal fissure were also analyzed. With an increase in the NCG concentration, the bubble departure diameter decreased while the bubble departure period increased. Furthermore, the influence was weakened with an increase in Re number. (C) 2019 Elsevier Ltd. All rights reserved.
机译：在这项研究中，使用修正的伪势格Boltzmann模型对多相多组分流进行模拟，模拟了含不凝性气体（NCG）的海水的三维（3D）沸腾，以及润湿性和NCG浓度对两者之间热通量的影响。分析了热源及其附近的流体，气泡离开的时间和直径。模拟结果表明，随着NCG浓度的增加，热通量，气泡离开周期和直径减小，而NCG对气泡离开直径和气泡周期随接触角平稳的影响逐渐减小。此外，还分析了水平裂缝中含NCG的海水的沸腾机理。随着NCG浓度的增加，气泡离开直径减小，而气泡离开时间增加。此外，随着Re数的增加，影响被减弱。 （C）2019 Elsevier Ltd.保留所有权利。

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