scholarly journals Aerodynamics Overview of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction

1996 ◽  
Author(s):  
Walter T Gutierrez ◽  
Basil Hassan ◽  
Robert H Croll ◽  
Walter H Rutledge
Keyword(s):  
Drag Reduction ◽  
Transportation Systems ◽  
Heavy Vehicle

scholarly journals Experimental Investigation of the Ground Transportation Systems (GTS) Project for Heavy Vehicle Drag Reduction

1996 ◽  
Author(s):  
Robert H. Croll ◽  
Walter T. Gutierrez ◽  
Basil Hassan ◽  
Jose E. Suazo ◽  
Anthony J. Riggins
Keyword(s):  
Experimental Investigation ◽  
Drag Reduction ◽  
Transportation Systems ◽  
Heavy Vehicle

Enhancing turbulence: a potential strategy for drag reduction based on ground transportation systems (GTS) model

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaolong Yang ◽  
Zhuangzhi Liu ◽  
Yu Hu
Keyword(s):  
Drag Reduction ◽  
Transportation Systems ◽  
Small Scale ◽  
Content Type ◽  
Eddy Simulation ◽  
Heavy Trucks ◽  
Turbulence Transition ◽  
Potential Possibility ◽  
Potential Strategy ◽  
And Performance

Purpose The purpose of this paper is to investigate the mechanism and performance of a potential strategy, which is to enhance turbulence to carry out drag reduction for heavy trucks. Design/methodology/approach Enhancing turbulence deflector (ETD) was placed on the roof surface of an ground transportation system (GTS) to investigate the drag reduction mechanism of enhancing turbulence. Transition shear-stress transport improved delay detach eddy simulation model was adopted to simulate the unsteady small-scale flow around the ETD. Findings By optimizing the three influencing factors, diameter, streamwise length and streamwise position, the optimized ETD has achieved a maximum drag reduction of 7.04%. The analysis of flow field results shows that enhancing turbulence can effectively suppress flow separation and reduce the negative pressure intensity in the wake region of GTS. Originality/value The present work provides another potential possibility for the improvement of the aerodynamic performance of heavy trucks.

Large-Eddy Simulation of Turbulent Flow Over a Heavy Vehicle With Drag Reduction Devices

2015 ◽  
Author(s):  
Sangseung Lee ◽  
Myeongkyun Kim ◽  
Donghyun You
Keyword(s):  
Drag Reduction ◽  
Stokes Equations ◽  
Aerodynamic Drag ◽  
Fuel Efficiency ◽  
Computational Simulation ◽  
Navier Stokes ◽  
Computational Techniques ◽  
Heavy Vehicle ◽  
Eddy Simulation ◽  
Flow Control Devices

In order to improve the fuel efficiency of heavy vehicles, flow control devices aiming at aerodynamic drag reduction are often utilized. Computational simulation has been widely used in the investigation of fluid dynamics associated with aerodynamic drag over a heavy vehicle and control effects of many drag reduction devices. Most previous studies were, however, conducted using computational techniques based on the Reynolds-averaged Navier-Stokes equations and with rather simplified geometries (i.e., GTS, GCM, and Ahmed body), and therefore, the utility of the understanding of the drag-producing flow physics is often impractical and limited.

Salient drag reduction of a heavy vehicle using modified cab-roof fairings

2017 ◽  
Vol 164 ◽  
pp. 138-151 ◽  
Author(s):  
Jeong Jae Kim ◽  
Sangseung Lee ◽  
Myeongkyun Kim ◽  
Donghyun You ◽  
Sang Joon Lee
Keyword(s):  
Drag Reduction ◽  
Heavy Vehicle
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