Aerodynamic Design Of A Roof Fairing For Trucks
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Date
2022-07-24
Authors
Ismadi, Nurul Syamimi Zahirah
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Carbon emission is the release of carbon into the atmosphere also known as greenhouse
gas emissions is the main contributor to climate change in this world. In Malaysia, the
transportation sector accounts for around 28% of total carbon emission, of which 85%
comes from road transport (Mustapa & Bekhet, 2016). Therefore, it is important reduce
the greenhouse gas (GHG) emissions to slow the climate change and also improve air
quality. Drag reducing devices can help to decrease air resistance of a vehicles, thus the
forces acting on the vehicles will be transfer more of that power produced by the engine
into movement. Therefore, the purpose of this thesis is to study how the air flow
behavior imposed on the truck with 20 m/s of velocity by simulation. Moreover, wind
tunnel is used to observe the drag acting on the 3D model truck that are selected.
Multiple velocities is used from 1 m/s to 15 m/s to observe the drag. The result shows
that a cab roof fairing that has rounded edges at the end could help to decrease the
aerodynamic drag. In the simulation, the gap between the truck and trailer has created
a low-pressure area which also contribute to the aerodynamic drag. Therefore, the use
of cab roof fairing in the experiment, aerodynamic drag is reduced for about 5.86% at
the velocity of 15 m/s.