Effects of Leading-Edge Defects of the NACA 0015 Airfoil on Aerodynamic Performance with Various Reynolds Number
This study investigates and identifies the effects produced by defect on an airfoil when compared to a smooth airfoil. The defect used in this research is one form of the surface concaved defect (SDD) type deformation because it can represent the serious damage caused by severe impact or erosion and...
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| Format: | Book |
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JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering),
2023-12-31.
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| Online Access: | Link Metadata |
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| Summary: | This study investigates and identifies the effects produced by defect on an airfoil when compared to a smooth airfoil. The defect used in this research is one form of the surface concaved defect (SDD) type deformation because it can represent the serious damage caused by severe impact or erosion and the deep defect characterized by a smooth sunken deformation. The opening size used is t*=12%, and the equivalent depth of the defect is h*=3%. Computational methods are being used in this research to analyzing flow of the fluid through the NACA 0015 airfoil, both in smooth and defective airfoil, with various Reynolds Number which are 1.6×106, 2×106, and 2.5×106. Standard k-epsilon model is being used in this research as turbulence model. For the smooth airfoil, stall conditions occur at an AoA of 11º, while for the defective airfoil, they occur at an AoA of 9º for each Re variation. The average decrease in the Cl/Cd ratio from smooth airfoil to defective airfoil at each AoA for all Re variations is 33%. Based on the velocity streamlines, vortices can be found at the defect cavity, and the vortex at the defective airfoil seems larger than the smooth airfoil. |
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| Item Description: | http://repository.upnvj.ac.id/27858/2/1910311027_ArtikelIKI.pdf |