The gaseous sulfur dioxide intrusion into and dispersion inside the binary heterogeneous water micro-cylinders with side-by-side configuration are presented. The vortexes outside/inside micro-cylinders as well as the solute transport problem are numerically studied at varied Reynolds number (30 ≤ ≤ 160) and solid fraction (0.2 ≤ ≤ 0.8) at a fixed gap-ratio ( = 1.0) in the gaseous air stream. The steady symmetric, deflected and flip-flopping flow were clearly observed with increasing Reynolds numbers. The solid core inside water micro-cylinders and the regulated non-uniform interfacial momentum exchange creates main stream driven primary and shear reversed secondary vortexes. Theses eddies constructed inflow/outflow vortex pairs dominate solute transfer, where the soluble gas was quickly entrained into the micro-cylinders by virtue of inflow-type vortex pairs at the separation point and was blocked due to outflow type vortex pairs at the stern regions. The lowest sulfur dioxide concentration is always located at the back of solid nucleus. The transient sulfur dioxide absorption and saturation of micro-cylinders pair were affected by the Reynolds number and the solid fraction. Moreover, diffusion gradually dominate mass transfer processes with increasing solid fraction. The insight into the effects of vortex and solid fraction on advective-diffusion will better understand the physics of gas-liquid flow interaction and solute transport inside water micro-cylinders.

中文翻译：

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含实心核的并排水微圆柱体内可溶性气体的吸收和分散


提出了气态二氧化硫侵入并分散在并排配置的二元异质水微圆柱体内的情况。在固定间隙比 (= 1.0) 下，对不同雷诺数 (30 ≤ ≤ 160) 和固体分数 (0.2 ≤ ≤ 0.8) 的气态微圆柱体外部/内部的涡流以及溶质输运问题进行了数值研究。气流。随着雷诺数的增加，可以清楚地观察到稳定的对称、偏转和翻转流动。水微圆柱体内部的实心核心和受控的非均匀界面动量交换产生主流驱动的初级涡流和剪切反转的次级涡流。这些涡流构建的流入/流出涡对主导溶质转移，其中可溶性气体凭借分离点处的流入型涡对被快速夹带到微圆柱体中，并由于尾部区域的流出型涡对而被阻挡。二氧化硫浓度最低的总是位于固体核的后面。微圆筒对的瞬态二氧化硫吸收和饱和度受雷诺数和固体分数的影响。此外，随着固体分数的增加，扩散逐渐主导传质过程。深入了解涡流和固体分数对平流扩散的影响将更好地理解水微圆柱体内气液流相互作用和溶质传输的物理原理。