A new method to primary and optimized design of ducted fan

Document Type : Original Article

Author

Aerospace Faculty- Shahid Sattari Aeronautical University of Science and Technology- Tehran-Iran

Abstract

In the present study, the aerodynamic performance of the ducted fan is investigated using the surface vorticity method and the lifting line theory. In previous research, to consider the effects of the duct, most of the parameters derived from empirical tests or computational fluid dynamics. Our goal is to present a new method for considering the effects of the duct on the fan enclosed in a duct. In this method, the lift and drag coefficients are only input parameters. The present method requires considerably less computational time than CFD methods. Also, the aerodynamic optimization of fan blades geometry has been carried out using particle swarm optimization method (PSO) to achieve the optimum blade geometry and the maximum output power. The results of this method are in excellent agreement with experimental data in references. By optimizing the geometry of the blade, the output power of ducted fan increased 10 percentage in comparison to ducted fan with old blade geometry.

Keywords

Main Subjects


Article Title [فارسی]

A new method to primary and optimized design of ducted fan

Author [فارسی]

  • Ahamad Sharafi
Aerospace Faculty- Shahid Sattari Aeronautical University of Science and Technology- Tehran-Iran
Abstract [فارسی]

In the present study, the aerodynamic performance of the ducted fan is investigated using the surface vorticity method and the lifting line theory. In previous research, to consider the effects of the duct, most of the parameters derived from empirical tests or computational fluid dynamics. Our goal is to present a new method for considering the effects of the duct on the fan enclosed in a duct. In this method, the lift and drag coefficients are only input parameters. The present method requires considerably less computational time than CFD methods. Also, the aerodynamic optimization of fan blades geometry has been carried out using particle swarm optimization method (PSO) to achieve the optimum blade geometry and the maximum output power. The results of this method are in excellent agreement with experimental data in references. By optimizing the geometry of the blade, the output power of ducted fan increased 10 percentage in comparison to ducted fan with old blade geometry.

Keywords [فارسی]

  • Ducted Fan
  • Surface Vorticity Method
  • Lifting Line Theory
  • optimization