MINI-SCALE WINDTUNNEL DESIGN USING SOLIDWORKS

Abstract

Wind tunnels are essential facilities in aerodynamic studies to provide controlled airflow for testing aerodynamic performance. This study aims to design a mini-scale wind tunnel using SolidWorks as a practical solution for laboratories with limited space and budget. The design consists of a contraction, test section, and diffuser with a total length of 1 m and height and width of 0.25 m. Airflow analysis was conducted using the continuity and Bernoulli equations to evaluate velocity and pressure distribution. Structural strength analysis using Finite Element Analysis (FEA) shows a maximum displacement of 0.0016 mm, maximum strain of 1.4×10⁻⁵, and a minimum factor of safety (FoS) of 4.4. However, a maximum stress of 571 MPa at the front joint exceeds the ASTM A36 yield strength (250 MPa), suggesting the need for design reinforcement with gusset plates. These results indicate the design's effectiveness with additional structural optimization.