Simulation Of Air Flow Around Vehicle Front Windscreen

Muhammad Yazid, Hasnan (2011) Simulation Of Air Flow Around Vehicle Front Windscreen. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In this project, simulation of air flow around vehicles front windscreen had been carried out. The models that have been chosen for this research were models from the national car manufacturers. ANSYS CFX software was used to run the simulation. k-ε turbulent model is used to calculate flow around the vehicle model and make a comparison between all models at vehicle speed 25m/s (90km/h). The main objective of the study is to obtain the flow pattern around vehicle front windscreen, to determine factors affecting aerodynamics of a vehicle. Several factors that influence the flow pattern such as flow separation, the effect of pressure coefficient (Cp) and types of turbulent has been studies. Detail velocity variation and pressure distribution plots around the vehicle envelopes have been presented. Proton Saga BLM shows higher pressure distribution at the bottom end of the windscreen compare to other models. Perodua Myvi show higher streamline velocity compares to other models. The Cp variations for all models are very large when close to the edges which are at the top edges of the front bumper, top edges of the windscreen and at the rear end of the vehicle.

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