Curves And Surface Modeling : A Case Of Truck Wind Deflector Design

Nor Adilia , Abd Latif (2012) Curves And Surface Modeling : A Case Of Truck Wind Deflector Design. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Due to the energy crisis, one of the important challenges in the automotive industry is to reduce the fuel consumption of the vehicle. In fact, the higher speed of the vehicle, the more fuel consumption is taken by the aerodynamic drag. Mostly, the aerodynamic drag lies in the shape of the vehicle. Consequently, the improvement of the aerodynamics of vehicle shape, more precisely the reduction of their aerodynamic drag, becomes one of the main topics of the automotive researchers.This research presents the use of SolidWorks software in the early phase of design which one can do design iterations with a given CAD data (without having the prototype of the truck vehicle). The truck wind deflector is an add-on device used on top of the truck roof for reducing aerodynamic drag. Based on the field conditions that the truck wind deflector is subjected to, design requirements were formulated. One of the requirements was to redesign the profile of the truck wind deflector. Therefore, the facet modeling technique is applied to improve the existing design of the truck wind deflector in order to obtain a smooth profile of this design. Furthermore, using the software ANSYS FLUENT, 2D analysis of the truck wind deflector was achieved, and possible correction of the geometry was made in purpose to improve the design in terms of reducing drag and improve aerodynamics. In addition, the validation process was performed to fmd out the differences between the redesign and existing design of the truck wind deflector. The layout was finalized after comparing the results from two commercially available tools - namely, FEA and ANSYS FLUENT.

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