CFD Analysis and Validation of a Foreign Material Winnowing Machine for Pepper Harvester

The winnowing machine of chili pepper harvesters was developed to reduce the potential problem low stem and fruit separation. combined with two impellers a center bearing prevent strain on drive shaft ensure durability. terminal velocity measured, an aerodynamic analysis conducted based this machine. A CFD (Computational Fluid Dynamics, Ansys Fluent 2020 R1) for three levels discharge port guide form (0, 3, 5 guides) rotating speed (1600, 1800, 2000 RPM) designed utilizing results. validation test by fabricating winnower device. As using measured values velocity, fruits were collected at outlet wind lower than 17.5 m/s branches separated higher 12.5 m/s. result analysis, deviation outlets 0-, 3-, 5-guide depending appeared be 15.8, 1.4, 1.0 average, respectively. showed speeds actual device minimum 0 maximum 2.4 Through device, optimal conditions separate foreign materials found 1800 RPM having guides or five guides.