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ANALYZING THE PROFILE MODIFICATION OF TRUCK-TRAILER TO PRUNE THE AERODYNAMIC DRAG AND ITS REPERCUSSION ON FUEL CONSUMPTION- By Mr. Awadhesh Upadhyay
The present
numerical analysis deals with the effect due to change in profile of
truck-trailer on aerodynamic drag and its repercussion on fuel consumption.
This numerical analysis is done by using CFD software i.e. ANSYS fluent, with
Shear tress transportation (SST) turbulence model on both unmodified and then
modified profile of truck-trailer. The comparison has been done with respect to
coefficient of drag, coefficient of lift, pressure contours, velocity
streamlines and vectors between unmodified and modified profile. The profile
modification has been done on basic truck-trailer model by providing wind
deflector on truck’s cabin, vortex trap, mini skirt, vortex strake and
aerodynamic revolute. It has been analyzed that, due to profile modification
the reduction in aerodynamic drag is up to 21 %, which reduces the fuel
consumption by 4 liters for 100 km for diesel powered truck. The analysis of
modified truck-trailer profile with external rear view mirror also has been
done, due to the external rear view mirror the coefficient of drag is increase
by 3.23%.
Keywords:
Aerodynamics, Truck-trailer, CFD, Fuel consumption, Rear view mirror,
Aerodynamic drag, ANSYS FLUENT.
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