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Personal
Computer Skills
Excel,
Word, Fortran 77, Visual C++, Visual Basic, Mathematica, Matlab, Mathcad,
Algor, Fluent, Nisa, PhotoShop, 3D studio AND many other Software
Interests
Reading, Travelling
Date of
Birth
August 26, 1973
Marital
Status
Married
Abstract
of MsC thesis
The purpose of this study is to investigate the effect of air deflector
on drag coefficient of truck. This has been accomplished by numerical
simulation of two-dimensional turbulent flow around simple models of
truck with and without deflectors. To model the turbulence, standard
 model of turbulence has been used. Numerical
solutions of the governing equations have been obtained by using finite
volume method and SIMPLEC algorithm with a non-staggered grid.
A
computer program in C has been written to perform the
calculations. Calculations have been performed for flat deflectors of
different angles as well as a curved deflector. Also, to study the
effect of the gap between driver’s cabin and the trailer, different
values of the gap have been considered. To validate the results,
numerical solutions of turbulent flow between two parallel plates and
external flow around a cylinder have been obtained and compare with
available experimental data, which indicate excellent agreement. Finally
the code is executed for the 2-D geometry of a truck with variable air
deflector. It is concluded that for the best deflector angle with
horizontal, the drag is reduced by 15%. In addition, it is noted that
for aerodynamic shape air deflector, the drag coefficient reduced by the
same amount. In the other case the gap between driver cabin and
container was increased. The result showed that the drag coefficient
increased about 8% with 4% increase in gap. In another case the drag
coefficient has been decreased from 2.35 to 2.0 with using a curve
deflector as aerodynamic shape. |
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