Investigation on interphase mixing and flow condensation process in a vertical channel
Investigation on interphase mixing and flow condensation process in a vertical channel
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垂直通道内相间混合及流动冷凝过程研究
DOI：
10.1016/j.expthermflusci.2018.05.012
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发表时间：
2018-11
影响因子：
3.2
通讯作者：
Cui Li
中科院分区：
文献类型：
--
作者：
Kang Zhu;Yanzhong Li;Yuan Ma;Jiaojiao Wang;Lei Wang;Cui Li
本文以R123为工质，对过热气体与过冷流动液体在垂直目视流道内的混合及随后的流动冷凝过程进行了实验研究。验证了垂直通道内两相流的流型，得到了不同工况下气相的流动冷凝长度。测试结果表明，在本实验操作条件下，气相在气孔处形成空腔或膜，然后在下游区域形成弥散气泡流。在0.35 ~ 0.76 m范围内，单孔气相流动冷凝长度随气体流量近似线性增加，多孔气相流动冷凝长度在0.27 ~ 0.56 m范围内减小。建立了计算流体力学（CFD）模型，模拟了管道内的两相流动和界面传热传质。通过与试验数据的对比，验证了CFD模型的模拟能力和预测精度，得到了满意的结果。本文的研究有助于理解和处理管内两相流的相间传热传质问题。
In this paper, an experimental study is performed on the mixing of superheated gas and subcooled flowing liquid and the subsequent flow condensation process in a vertical visual flow channel using R123 as the working fluid. The flow patterns of the two phase flow in the vertical channel are verified and the flow condensation lengths of the gaseous phase under different operating conditions are obtained. Test results indicate that under the operating conditions in this experiment, the gaseous phase forms a cavity or a film at the gas orifices, and then forms a dispersive bubbly flow in the downstream region. The flow condensation length of the gaseous phase through a single orifice increases approximately linearly with the gas flow rate over a range of 0.35–0.76 m, and it is reduced to a range of 0.27–0.56 m by using multiple gas injection orifices. A computational fluid dynamics (CFD) model is established to simulate the two phase flow and interfacial heat and mass transfer in the channel. The simulation capability and prediction accuracy of the CFD model are validated by comparing numerical results of phase distributions as well as the flow condensation lengths with test data, and satisfying agreements are obtained. This work could be beneficial to the understanding and handling of interphase heat and mass transfer problems in in-tube two phase flows.
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DOI：
10.1142/9789814460286_0004
发表时间：
2002
期刊：
--
影响因子：
--
作者：
W. Lee
通讯作者：
W. Lee
影响因子：
--
作者：
I. Lim;R. S. Tankin;M. Yuen
通讯作者：
I. Lim;R. S. Tankin;M. Yuen
影响因子：
2.7
作者：
Qingyun Zeng;Jiejin Cai;Huaqiang Yin;Xingtuan Yang;Tadashi Watanabe
通讯作者：
Qingyun Zeng;Jiejin Cai;Huaqiang Yin;Xingtuan Yang;Tadashi Watanabe
垂直矩形通道过冷流沸腾汽泡凝结特性数值研究
影响因子：
1.7
作者：
Liang-ming Pan;Zhi-wei Tan;De-qi Chen;Long-chang Xue
通讯作者：
Long-chang Xue
影响因子：
--
作者：
Hyo Kim;S. Bankoff
通讯作者：
Hyo Kim;S. Bankoff