Two-dimensional numerical analysis of interphase mass transfer in a single bubble under phase change conditions

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-09-25 DOI:10.1016/j.anucene.2025.111892

Yibin Wang , Zhuang Miao , Yu Zhao , Ruifeng Tian , Sichao Tan , Jiming Wen

引用次数: 0

Abstract

Heat and mass transfer at the gas–liquid interface in bubbles plays a crucial role in bubble towers and reactors. In the presence of exothermic reactions or decay heat, the effect of phase change on the motion and mass transfer in bubbles cannot be neglected. In this paper, the mass transfer mechanism of multicomponent bubbles under pairs of phase change conditions is investigated by numerical simulation methods. The results show that evaporation affects the interphase mass transfer through the mechanisms of diluting the iodine concentration within the bubbles and lengthening the iodine diffusion distance. The introduction of decay heat has a large impact on evaporation, which in turn affects the mass transfer. Ultimately, this paper presents a suitable formula for the Sherwood number under evaporation.

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单相气泡相变条件下相间传质的二维数值分析

在气泡塔和气泡反应器中，气泡内气液界面的传热传质起着至关重要的作用。在存在放热反应或衰变热的情况下，相变对气泡运动和传质的影响是不可忽视的。本文采用数值模拟方法，研究了多组分气泡在双相变条件下的传质机理。结果表明，蒸发通过稀释气泡内的碘浓度和延长碘扩散距离的机制影响了相间传质。衰变热的引入对蒸发有很大的影响，蒸发反过来又影响传质。最后，本文给出了一个适用于蒸发条件下的舍伍德数公式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.