COMPUTATIONAL FLUID DYNAMICS INVESTIGATION OF AERODYNAMIC PERFORMANCE FOR A BUS AT VARYING SPEEDS

Abstract

This study investigates the aerodynamic characteristics of a bus at various velocities using Computational Fluid Dynamics (CFD) simulations. With increasing global concerns regarding fuel efficiency, operational costs, and environmental impact, understanding and optimizing the airflow around large road vehicles like buses has become critically important. This research employs advanced CFD techniques to model the complex airflow patterns, visualize pressure distributions, and accurately quantify the aerodynamic forces, specifically drag, acting on a representative bus model. Simulations were systematically conducted across a range of typical operating speeds to meticulously observe the impact of velocity on key aerodynamic parameters, including the drag coefficient and the absolute drag force. The findings provide comprehensive insights into the intricate fluid dynamics surrounding bluff-body vehicles such as buses and highlight specific areas where aerodynamic improvements could be implemented. Ultimately, this work contributes to the broader goal of enhancing fuel economy, reducing emissions, and improving the overall sustainability of public transportation systems.