Análisis y simulación aerodinámica de una motocicleta de carretera tipo CUSTOM 125 CC. mediante dinámica de fluidos computacional (DFC) y propuesta de diseño de un carenado frontal.

Abstract

This research aims to analyze and simulate aerodynamically a Custom 125 CC road motorcycle. Through computational fluid dynamics (CFD) and propose a front cowling, this study was based on model of Suzuki GN 125 CC motorcycle, after this outside parties that influence aerodynamically were scanned, also in a CAD software were designed two options of front fairing, in order to improve aerodynamics. A pilot with an average height of 1,70 m like Ecuadorian man was digitized, considering that 90 degrees is the correct driving position in a motorcycle, so critical parameters were taken from: temperature, pressure and speed relative to Ecuador, as input to Ansys software, the results show the change in fineness or aerodynamic efficiency, and based on these results was selected the more efficient aerodynamically fairing. By validating the fairings, the total strain, maximum stress and safety factor were determined. The ideal material to the front fairing is acrylic, this has some advantages as : 5% more clearness than a normal glass, it is flexible with cold, 100% recyclable, the supports have a quick and easy clamping to handlebars and steer the motorcycle. These motorcycles have become a useful tool work of many Ecuadorians, it is recommended to validate this scale design in a wind tunnel, in order to make a contrast of results.