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Inlet Parameters Effects of Invelox on the Aerodynamic ‎Performance using Numerical ‎Simulation
Author(s): Ali Farokhzade, Mohamad Javad Maghrebi
Keywords: Invelox‎;‎ Ducted wind turbine‎;‎ Speed ratio‎;‎ CFD‎;‎ Efficiency improvement.
Invelox is a structure that increases the wind velocity by collecting air from the higher level of ground. ‎Previous studies ‎showed that Invelox has the potential to capture air and increases the speed of wind, ‎which means more power output. ‎Although it was claimed that Invelox can capture air from all directions, ‎its performance greatly depends on the angle of ‎wind. In this study, the performance of Invelox is ‎analyzed and improved for different wind directions by changing the ‎number of blades. The results ‎showed, however, the aerodynamic performance of all proposed Inveloxes has decreased due to ‎increasing ‎the wind angle, the five-blade Invelox outperforms the original model in output power by ‎about 7%-20% in various wind directions. ‎Furthermore, in order to reduce air escaping from the opposite ‎side of Invelox, the length of the upper funnel has been increased. ‎Results showed about 12% improving ‎performance when the length of the upper funnel is equal to its diameter.‎ The three dimensional models ‎were analyzed by Ansys-Fluent, under steady-state conditions‎.

Journal of Applied Fluid Mechanics

The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating.

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