Aerodynamic Cooling of Automobiles



INTRODUCTION


The air that rams into the engine bay, is used for cooling, combustion, and for passengers, then reaccelerated by a nozzle and then ejected under the floor.
 

Most car designs have had thousands of pounds spent on them and many hours in the wind tunnel while the engineers refined and altered, tested and assessed to achieve their goals. But contrary to popular belief, many of those hours weren’t used ....etc

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ABSTRACT
Four simple, low cost aerodynamic drag reduction devices have been developed for application to
the trailer of a tractor-trailer truck. Two vortex flow devices have undergone extensive
operational fleet testing where they have amassed over 85,000 miles of use. These two vortex
flow technologies have shown a combined fuel savings of 8% at an average speed of 47.5 mph.
This improvement in fuel economy correlates to an equivalent drag reduction of approximately
20% with a corresponding drag coefficient of 0.45. Observations ....etc

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ABSTRACT
This paper presents results of numeric modeling of three-dimensional flow around the configuration of the piloted orbital spaceship “the winged aerospace vehicle proposed by the central Hydrodynamic Institute.The flight vehicle with nondeflected control devices was examined.The effect of the deflection of the balancing flap on the flow field and the aerodynamic performance of the vehicle is studied here.The efficiency of the flap with its deflection is obtained.Computations were perfomed using the applied p ....etc

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Numerical Simulation for Aerodynamic Characteristics of Low Altitude and Subsonic Flight Vehicle
Abstract—In order to analyze the drag characteristics of the vehicle having different war head and empennage, the computational fluid dynamics numerical simulation was used. The method was based on fully hexahedral mesh and three-dimensional Navier-Stokes equations and Spalart-Allmaras turbulence model. Through numerical simulation the flow field structures and computational aerodynamic characteristics were obtained. T ....etc

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Research on Aerodynamic Drag Reduction by Vortex Generators




Introduction

To save energy and to protect the global environment,
fuel consumption reduction is primary concern of
automotive development. In vehicle body development,
reduction of drag is essential for improving fuel
consumption and driving performance, and if an aerodynamically
refined body is also aesthetically attractive,
it will contribute much to increase the vehicle’s appeal
to p ....etc

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