Modulated flow patterns for vertical upflow by the phase separation concept
Modulated flow patterns for vertical upflow by the phase separation concept
复制标题
通过相分离概念调节垂直向上流动的流动模式
DOI：
10.1016/j.expthermflusci.2013.09.021
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发表时间：
2014
影响因子：
3.2
通讯作者：
陈宏霞
中科院分区：
文献类型：
--
作者：
陈宏霞
提出了被动相分离的概念，在壁面形成薄的液膜。由单层网状孔表面制成的插入式网筒将管截面划分为靠近管壁的环形区域和核心区域。防止气泡进入核心区域，并可将液体吸向核心区域。因此，两相主要在两个不同的区域流动。该概念有望用于多相（沸腾/蒸发和冷凝）传热增强。空气-水两相流实验采用垂直上升流进行。微型气泡被调制以在环形区域内流动。对帽/段塞/塞泡进行调制，使其在环形区域内形成拉长的环状段塞泡，从而在壁上产生薄的液体膜。在所有情况下，核心区域都充满了液体。由于核心区液体与环空区气体的密度差较大，因此在核心区脉动流动是自维持的。网状孔表面促进了环形区域和核心区域之间的质量和动量交换。对于长度大于10cm的环状段塞流气泡，则从段塞流气泡前缘喷出微型气泡。本实验室的相变传热实验验证了所提出的概念。
The passive phase separation concept was proposed to create thin liquid film on the wall surface. The inserted mesh cylinder made of a single layer of mesh pore surface divides the tube cross section into an annular region near the tube wall and a core region. Gas bubbles are prevented from entering the core region and liquids can be sucked towards the core region. Thus, the two-phases are majorly flowing in two different regions. The concept is expected to be used for multiphase (boiling/evaporation and condensation) heat transfer enhancement. Air–water two-phase flow experiments were performed with vertical upflows. Miniature bubbles are modulated to flow in the annular region. Cap/slug/plug bubbles are modulated to form the elongated-ring-slug bubble in the annular region to generate thin liquid films on the wall. For all the cases, the core region is full of liquid. Due to the large density difference between liquid in the core region and gas in the annular region, pulsating flow is self-sustained in the core region. The mesh pore surface promotes the mass and momentum exchange between the annular region and core region. For ring-slug bubbles such as longer than 10 cm, miniature bubbles are emitted from the slug bubble front. The proposed concept is being verified by the phase change heat transfer experiment in our laboratory.
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影响因子：
4.5
作者：
A. Miyara;Yusuke Otsubo
通讯作者：
A. Miyara;Yusuke Otsubo
DOI：
10.1007/978-3-030-22137-9_10
发表时间：
2019-09
期刊：
Fundamentals of Multiphase Heat Transfer and Flow
影响因子：
--
作者：
A. Faghri;Yuwen Zhang
通讯作者：
A. Faghri;Yuwen Zhang
DOI：
10.1016/j.ijheatfluidflow.2009.02.019
发表时间：
2009-10-01
影响因子：
2.6
作者：
Han, Youngbae;Shikazono, Naoki
通讯作者：
Shikazono, Naoki
影响因子：
4.6
作者：
Aussillous, P;Quéré, D
通讯作者：
Quéré, D
DOI：
10.1016/b978-0-12-370610-2.50016-7
发表时间：
2006
期刊：
--
影响因子：
--
作者：
A. Faghri;Yuwen Zhang
通讯作者：
A. Faghri;Yuwen Zhang