Modifications in Mini-Bus Design for Drag Reduction 2019-26-0071
The purpose of this study was to develop the aerodynamic study of a minibus vehicle. With the objective of reducing Power consumption, as Mini-Bus is designed as H2-O2 fuel cell and electric Bus and consequently no emissions are created to the environment. The proposed initial of the project was to identify the aerodynamic coefficient of the existing vehicle from the 3D CAD model. After preliminary analysis of the model and based on studies conducted are effected changes in order to achieve better results in the design of new generations of the vehicle. The simulation of the air flow over the vehicle was performed in three steps: design on Catia, discretization of the computational domain using Computational Fluid Dynamics (CFD) meshing and ANSYS (FLUENT) solve to CFD. We used the turbulence models of two equations k-ε Standard and k-ε Realizable having a better approximation of the actual result. Analyzing the results, it was observed that changes in front and rear geometry of the vehicle has been possible to achieve a reduction of almost 32% of the drag coefficient for Dolphin Bus and 42% of the drag coefficient for Aero-Dolphin Bus which results in a power savings of about 13.5% for Dolphin Bus and 18% for Aero-Dolphin Bus, The name given is Dolphin as it’s front shape is like a Dolphin who uses its 20% of IQ. So, ADAS (Advanced Driver Assisted Steering system) including Adaptive cruise control system can be used in these Dolphin and Aero-Dolphin Buses.
Vivek Waman Nagose
College of Engineering, Pune
Symposium on International Automotive Technology 2019