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- W142401573 abstract "Growing concern on environmental issues has prompted house owners and industriesto consider use of roof top ventilators, as a passive form of quality air circulation andcomfort using only wind energy. However, many of these ventilators have evolvedthrough trial and error and the flow physics associated with these ventilators is barelyunderstood.This study presents prediction of airflow using Computational Fluid Dynamics(CFD) technique code, FLUENT, so as to visualize the flow behavior around andwithin turbine ventilator in addition to determining the aerodynamic forces acting ona turbine ventilator during operation and comparing the simulated results to available experimental data. The prototype used for this investigation is a wind drivenventilator from Edmonds Company with a rotor diameter of 330 mm and basediameter of 1 50 mm. The free stream velocities in visualization of flow are set to be7 and 20 m.s-l when, for determining the aerodynamic forces are considered to be 7,10, 14, 20 and 25 m.s-l corresponding to experiment. The simulated prototype isplaced in a control volume with the same dimensions as open circuit wind tunnelused in experimental investigation. Also the operating pressure and fluid propertiesare set to be the same as experiment. Standard k-E, Realizable k-E, SST k-w andRSM turbulence models are used by taking advantage of moving mesh method tosimulate the rotation of turbine ventilator and the consequent results are obtainedthrough the sequential process which ensures accuracy of the computations.The results demonstrated that, the RSM turbulence model shows the bestperformance on flow visualization and predicting the aerodynamic forces acting on aturbine ventilator. Results from this study, besides ensuring the reliability of utilizingthe CFD method in design process of future turbine ventilators, would lead us to aconspicuous progress on increasing the efficiency at reduced cost of wind drivenventilators and similar devices." @default.
- W142401573 created "2016-06-24" @default.
- W142401573 creator A5009388253 @default.
- W142401573 date "2009-10-01" @default.
- W142401573 modified "2023-09-27" @default.
- W142401573 title "Turbulent Flow In An Active Wind-Driven VentilationDevice" @default.
- W142401573 hasPublicationYear "2009" @default.
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