Enhancement of Aerodynamic Performance of High Speed Train Through Nose Profile Design: A Computational Fluid Dynamics Approach

Aerodynamic drag of fast-moving train has significant impact on its fuel consumption and design safety. To improve aerodynamic performance, the forces surfaces must be reduced. Train’s front-end nose boundless geometrical variations that can applied for improved performance. Three geometric characteristics were used in present research: A-pillar roundness, length controls shrinking, bluntness. Latin-Hypercube based random sampling method was to determine appropriate values these parameters specific range. Using Computational Fluid Dynamics (CFD), a numerical approach analyze performance selected factors operating conditions. Comparisons analysis base proposed models made evaluated enhanced CFD iterative improvements modified designs indicate reduction through change roundness bluntness 10% 22%, respectively. The increase which shrinkage causes by 35%. Similarly, boundary layer pressure distribution front end also considered analyzed improvement. It concluded controlling is key factor among more influence high-speed surface comparison other considered. This research effort offers modification, geometry consequently consumption.