Influence of Flow Rotation Within a Cooling Tower on the Aerodynamic Interaction with Crosswind Flow

A conceptual study on air jet-induced swirling plume for performance improvement of natural draft cooling towers

“…Attempts to utilize this effect thus have been made on cooling towers/chimneys through patents such as [29,30], despite lack of actual proof. Hemmasian Kashani et al [31,32] numerically studied the influence of flow rotation in the over-shower zone of a natural draft wet cooling tower and found that the rotation intensifies heat and mass transfer in the zone [31] and increases the homogeneity of the flow field inside cooling towers under certain crosswind conditions [32]. The authors proposed that the flow rotation could be generated by a type of deflectors, but failed to give any detail.…”

Numerical Simulation on Temperature and Moisture Fields Around Cooling Towers Used in Mine Ventilation System

“…In further studies, modifications of this model were proposed to enhance the efficiency of a cooling tower under crosswind conditions by designing external and internal fixed windbreak walls [12,13], internal windbreak walls with an asymmetric curved shape [14], partially rotating windbreak walls [15], windbreak walls with cooling enhancement by water distribution [16], external arc curved air flow deflectors [17], the geometry of cross-section [18,19], arrangement of heat exchangers [20], and optimization of flow rate of the circulating cooling water distribution [21]. Moreover, models based on the RANS equations for incompressible flow were successfully applied for the calculation of the adverse influence of crosswind on a natural draft wet-cooling tower [22,23] and development of schemes for embedding into a tower of an air duct [24] or forced ventilation [25,26] to reduce this negative effect. In [27,28], the hydrodynamic model was used for analysis of thermal performance of a natural draft wet-cooling tower improved by split flow plates to produce a dry-wet hybrid zone.…”