Shape optimization of a multi-element hydrofoil for hydrokinetic turbines using response surface methodology Rubio-Clemente A., Aguilar J., Chica E   2019/07/15

Abstract

This paper describes the optimization procedure of a two-dimensional multi-element hydrofoil shape during its design for small horizontal axis hydrokinetic turbines using response surface methodology. JavaFoil software was used for describing the hydrofoil performance under several combinations of geometrical parameters, such as the horizontal space (overlap), h, between the drag edge of the main element and the leading edge of the second element; the vertical distance (gap), d, of the flap from the main element trailing edge; and the flap deflection angle,
. Different experimental designs aiming at the maximization of the lift-to-drag ratio were used. The maximal
lift-to-drag ratio was found to be 69.9626 for ,  and
equal to 2.0%, 18.4619% and 20°, respectively, being
the factor exerting a considerable influence on the response variable.

Authors and affiliations

Rubio-Clemente A1,2., Aguilar J2., Chica E2
1. Facultad de Ingeniería, Tecnológico de Antioquia–Institución Universitaria TdeA, Medellín, Colombia.
2. Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia.

Key words

Hydrokinetic turbine, hydrofoil optimization, response surface methodology, design of experiments

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