Formation of gas-liquid slugs in millimeter-scale T-junctions - Slug size estimation framework
Formation of gas-liquid slugs in millimeter-scale T-junctions - Slug size estimation framework
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DOI：
10.1016/j.cej.2019.123492
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发表时间：
2020-04-01
影响因子：
15.1
通讯作者：
Tonomura, Osamu
中科院分区：
文献类型：
--
作者：
Ahn, Gwang-Noh;Taniguchi, Satoshi;Tonomura, Osamu
微/毫米尺度通道中的气液弹状流由于其高质量和热传递速率而在广泛的应用中是优选的。在大多数应用中，需要精确地知道段塞的尺寸，因为传质特性受段塞长度和其速度的影响。在这里，气液段塞的形成机制进行了探索毫米级的T型接头，这是不同于微米级的报告，和一个框架的段塞尺寸的估计，这是基于质量平衡新提出的。与微米级情况下仅由通道几何形状和液气流量比确定的气塞尺寸相反，气塞尺寸受液体和气体速度的强烈影响。
Gas-liquid slug flow in micro/millimeter-scale channels is preferred in a broad range of applications because of its high mass and heat transfer rates. In most applications, the size of slugs needs to be precisely known, as the mass transfer characteristics are influenced by the slug length and its velocity. Here, a formation mechanism of gas-liquid slug is explored for the millimeter-scale T-junctions, which is different from that reported for micrometer-scale ones, and a framework is newly presented for the estimation of the slug size, which is based on a mass balance. As opposed to the gas slug size determined solely by channel geometry and liquid to gas flow ratio for micrometer-scale case, the size is strongly influenced by liquid and gas velocities.