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首页> 外文期刊>Computational thermal sciences >NUMERICAL STUDY AND EXPERIMENTAL VALIDATION OF THE WATER FILMS AND THE DETACHMENT OF DROPS ON DRIFT ELIMINATORS
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NUMERICAL STUDY AND EXPERIMENTAL VALIDATION OF THE WATER FILMS AND THE DETACHMENT OF DROPS ON DRIFT ELIMINATORS

机译：除水器上水膜的数值研究和实验验证以及液滴的去除

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摘要

This paper is focused on the study of a type of drift eliminator installed in a mechanical draft cooling tower. Drift eliminators are installed in cooling towers in order to avoid water droplets to be emitted to the ambient. These droplets are formed by the crossflow between airflow and water pulverization inside the tower. This study is centered on the analysis of three aspects: the water film formed on the plates of the drift eliminator, the size of water droplets detached from this film, and the flow conditions for the detachment of these droplets. These aspects are studied with a multiphase numerical approach, validated by experimental tests. Good agreement is obtained between numerical and experimental results. The results show that the behavior of water droplets is very influenced by air velocity inside the cooling tower. Moreover, limits for air velocity are set for the drift eliminator not to act as a droplet generator itself.
机译：本文重点研究安装在机械通风冷却塔中的一种除水器。除水器安装在冷却塔中，以避免水滴散发到周围环境中。这些液滴是由塔内气流和水粉之间的交叉流形成的。这项研究集中在三个方面的分析上：在除水器板上形成的水膜，从该膜上分离的水滴的大小以及这些水滴分离的流动条件。通过多阶段数值方法研究这些方面，并通过实验测试进行了验证。数值结果与实验结果吻合良好。结果表明，水滴的行为受冷却塔内部空气速度的影响很大。而且，为漂移消除器设置了空气速度的极限，以使其自身不充当液滴产生器。

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