The visible plume from a cooling tower is sometimes considered to be a cause of nuisance such as icing, lower visibility, and obstructed sunshine. A reliable method of predicting the behavior of the visible plume is therefore expected to be established. In this study, the visible plume was predicted by means of computational fluid dynamics. The computational results were capable of reproducing the main features of the vissible plume. The length, width, and volume of the visible plume in various conditions agreed well with the measured values. Although it was not possible to represent the small fluctuations of the visible plume due to turbulence by the above simulation, this method is expected to become a useful tool in normalizing the scale of the visible plume.
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