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Numerical Investigation of Diffuser-Shaped Vortex Generators with Semi-Open Angles on Cylindrical Towers
Author(s)
Date Issued
January 1, 2025
Type
Article
Abstract
This study presents a numerical investigation into the flow configurations and pressure distribution of cylindrical towers equipped with various vortex generators. The primary objective is to reduce the energy consumption of ventilation in these towers. Different diffuser-shaped vortex generators with semi-open angles are compared to determine the optimal angle for generating an upward suction draft. The study also examines the effects of air velocity and vortex generator size on flow configuration. The finite element method, implemented through commercial software, is employed to solve the main problem. The numerical results reveal that the suction draft speed within the tower is directly proportional to the crosswind speed. The diffuser-shaped vortex generator with a height equivalent to 2D provides the most effective ventilation. Furthermore, a semi-open angle of 8° proves to be the most suitable for cylindrical towers, with increasing semi-open angles resulting in enhanced updraft wind speeds.
Citation
Mathematical Modelling of Engineering Problems, 12(2), 434-442, 2025