液柱冲击壁对水平管外液膜厚度波动的影响

IF 2.4 4区工程技术 Q3 ENERGY & FUELS

International Journal of Low-carbon Technologies Pub Date : 2023-05-10 DOI:10.1093/ijlct/ctac116

Lele Chen, Q. Qiu, Xiaocui Zhang, Kun Zhang

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引用次数: 0

摘要

建立了水平管外降膜流动的三维模型，研究了液柱冲击管壁对液膜厚度分布的影响。研究发现，在单液柱中，液膜厚度在0°-60°时波动较大，并出现最小厚度。在射流中，由于液膜的波动，有一个70°的临界值。70°前的液膜厚度变化与雷诺数呈负相关，70°后的液膜厚度与雷诺数呈正相关。波动幅度与雷诺数呈负相关。

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Influence of liquid column impact wall on liquid film thickness fluctuation outside the horizontal tube

A 3-D falling film flow model outside the horizontal tube is established to study the influence of the liquid column impact the wall on the liquid film thickness distribution. It is found that the liquid film thickness fluctuates significantly at 0 ° - 60 ° in single liquid column, and the minimum thickness appears. In the jet flow, there is a critical value of 70° due to the liquid film fluctuation. The liquid film thickness change before 70° was negatively correlated with Reynolds number, and positively correlated after 70°. And the fluctuation amplitude negatively correlates with the Reynolds number.

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来源期刊

International Journal of Low-carbon Technologies Engineering-Architecture

CiteScore

4.30

自引率

4.30%

发文量

106

审稿时长

27 weeks

期刊介绍： The International Journal of Low-Carbon Technologies is a quarterly publication concerned with the challenge of climate change and its effects on the built environment and sustainability. The Journal publishes original, quality research papers on issues of climate change, sustainable development and the built environment related to architecture, building services engineering, civil engineering, building engineering, urban design and other disciplines. It features in-depth articles, technical notes, review papers, book reviews and special issues devoted to international conferences. The journal encourages submissions related to interdisciplinary research in the built environment. The journal is available in paper and electronic formats. All articles are peer-reviewed by leading experts in the field.