Journal Article

Implementation fluidic oscillator as an active flow control device to improve aerodynamic performance of airfoil

Iskandar, Waridho, Adhynugraha, Muhammad Ilham, Hasim, Fadilah, Julian, James, Harinaldi

2025

Overview

Fluidic oscillators are used to overcome fluid flow separation on the upper side of the airfoil. The AoA chosen is for stall conditions, namely 16°, 18° and 20°. The type of fluidic oscillator used is a two-feedback channel fluidic oscillator. The chosen element is a triangle because it is easy to implement in complex geometries such as fluidic oscillators. The algorithm used is PISO. The governing equation for solving problems is URANS. URANS is then combined with the k-omega SST turbulence model. A low Reynolds number of 48000 was chosen to simulate the NACA 0015 airfoil. This Reynolds number is calculated based on the chord length of the airfoil. Variations were also made to the fluidic oscillator velocity-inlet value. The velocity-inlet variations given are 25 m/s, 35 m/s, and 45 m/s. The increase in Cl will be more significant if the selected inlet velocity is higher. At an inlet velocity of 45 m/s, the average increase produced was 38.53%. Double FO experienced an increase of 21.99%. Drag reduction is another parameter used to assess the aerodynamic performance of an airfoil. The average drag reduction for a velocity-inlet of 45 m/s is 12.54%. Double FO produces an average drag reduction of 6.80%.

• Publisher: IOP Publishing
• Subject: Aerodynamics / Airfoil / Airfoil oscillations / Airfoils / Control equipment / Drag reduction / Flow control / Flow separation / Fluid flow / Fluidic oscillator / Oscillators / Reynolds number / Turbulence models / Turbulent flow / Velocity / Velocity-inlet