CFD Investigation of Spacing Ratio Impacts on Plume Rise for Double-inline Stacks

Articles in Press

Document Type : Research Article

Authors

1 Chemical Engineering, Sahand University of Technology

2 Sahand University of Technology

Abstract

Specifying the emission characteristics of pollutants from point sources such as stacks and flares has always been a topic of interest in environmental engineering. In the present study, by applying computational fluid dynamics (CFD) the effect of the spacing ratio between two stacks with the inline arrangement on plume rise is investigated. The hydraulic diameter and height of the flumes are scaled to 1.27 and 10 meters, respectively, based on previous empirical investigations in the literature. Also, the distance between the stacks (called spacing ratio α) is considered as the multiple of the hydraulic diameter in ratios of 3, 6, 9 and 18. Given simulation results by increasing the spacing ratio, plume rise occurs at a distance further from the emission source downstream. For the α=3 as a basis for comparisons, by double, triple, and sixfold the alpha value, the shielding effect reduces 73, 112 and 154%, respectively.

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Iranian Journal of Chemistry and Chemical Engineering

Articles in Press, Accepted Manuscript
Available Online from 05 March 2024

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