Estudio y optimización de una aeronave con fuselaje de ala fija aplicado a vehículos aéreos no tripulados en la región Andina mediante simulación numérica de dinámica de fluidos computacional (CFD)

Abstract

In recent years UAVs application spectrum has broadly increased in surveillance, infrastructure and agriculture. The BWB concept was applied on UAVs in the search for longest autonomy periods, and energy efficiency. Design methods have evolved from empiric to CFD design. CFD serves as a tool to optimize resources, reducing manufacture, materials and time cost. This work presents a comparison between S-A, k-ε and k-ω SST turbulent models over a modify UCAV 1303 and the optimizations of this model for flight conditions over 3000 meters above sea level. The simulations were performed using ANSYS commercial software, with a free stream velocity of 0.15 Ma. For a better use of computational resources, the influence of the fluid domain size for low speed flow is studied. A C-grid mesh structures is used and mesh density for independent results and elements limit to round-off error have been studied, too. Results are validated with data of public domain. Based on the validated results the BWB model is modify to obtain an own fuselage appropriate for flight over the Andean region.