Computational fluid dynamics analysis of Perodua Axia body with several types of spoiler

Wan Azir, Wan Muhammad ‘Afif (2022) Computational fluid dynamics analysis of Perodua Axia body with several types of spoiler. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This thesis presents the computational fluid dynamics analysis of the Perodua Axia body with several types of spoiler. The design of the Perodua Axia body is was created with several types of spoiler to analyze the drag force at the rear back. A spoiler's design purpose is to minimize drag and improve fuel economy. From the rear border of the roof to the trunk or tail of the automobile, many automobiles have a rather steep downward inclination. Flow separation occurs when air moving across the roof tumbles over this edge at a higher velocity. The airflow becomes turbulent, resulting in the formation of a low-pressure zone, which increases drag. Adding a spoiler to the vehicle's very back reduces flow separation by making the air slice longer and softer from the roof to the spoiler. Reduced flow separation reduces drag, which improves fuel efficiency; it also aids in keeping the back window clear by allowing air to flow easily through it. Due to the constraints of traditional wind tunnel experiments and quick advances in computer power, much effort has been devoted to studying vehicle aerodynamics computationally during the last decade. A 3D computer model of the Perodua Axia car will be designed with the software Catia Autocad and be used as the base model. The other model will be designed with another spoiler design. The simulation will be run to determine the aerodynamic effects of the spoiler.

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