Analisis Pengaruh Panjang Chord dan Profil Sudu Terhadap Kinerja Wells Turbine Sebagai Wave Energy Converter Dengan Metode CFD

Abstract

Oscillating water column (OWC) is a device to convert ocean wave energy into electrical energy. The rise and fall of ocean waves will push the air in the OWC column and rotate the Wells Turbine connected to  generator to produce electricity. The previous research analyzed the performance of Wells Turbine with NACA 0015 blade profile and 125 mm chord length. The result was the Coefficient Torque (CT) value was not optimum and can still be improved with several variations. Based on this condition, this research was made to optimize and analyze the effect of chord length and blade profile on Wells Turbine used in OWC. The purpose was to determine the most optimum value of CT and CP (Coefficient of power) using CFD method (Computational Fluid Dynamics).  Chord length variations used were 100 mm, 125mm and 150 mm. The profile variations  are NACA 0012, NACA 0015 and NACA 0018. The result is the chord length and blade profile that produces the most optimum value of CT and CP is NACA 0018 with a Chord length of 150 mm so it can be used in OWC design

Keywords: Oscilating Water Coloumn, Wells Turbine, CFD (Computional Fluid Dynamic