Scholarly Research Excellence

Prof. Dr. Antonio Brasil Junior


Universidade de Brasília


Mechanical Engineering Department

Research Fields

Energy and Environment, Heat Transfer, Finite Elements for Fluids, Sustainable Development


An Experimental Study of Diffuser-Enhanced Propeller Hydrokinetic Turbines
Wind tunnel experiments of horizontal axis propeller hydrokinetic turbines model were carried out, in order to determine the performance behavior for different configurations and operational range. The present experiments introduce the use of two different geometries of rear diffusers to enhance the performance of the free flow machine. The present paper reports an increase of the power coefficient about 50%-80%. It represents an important feature that has to be taken into account in the design of this kind of machine.