A new airfoil based on banana leaf midrib morphology for horizontal axis wind turbine

Abstract

Abstract The airfoil profile of this study is based on plant morphology, which is rarely modeled in airfoil profiling. Designing, modeling, and analyzing the aerodynamics of one of the projected morphological parts of the banana leaf midrib that forms a 45-degree angle with the longitudinal axis as a distinct new airfoil. The profile of the LM-45 airfoil has a thickness of 16.28%, a chord length of 1500mm, a Reynolds number between 3E5 and 7E5, and a wind speed between 3 and 7 meters per second. An aerodynamic analysis using QBLADE and ANSYS FLUENT determined the glide ratio and pressure distribution across the airfoil surface. LM-45 has a maximum glide ratio of 123.07 at an angle of attack of 2 degrees and a Reynolds number of 7E5, and a minimum glide ratio of 70.02 at an angle of attack of 4 degrees and a Reynolds number of 3E5. As indicated by the glide ratio, the banana leaf midrib profile can be applied to the airfoil profile for wind speeds between 3 and 7 m/s at an attack angle between 2 and 4 degrees.