The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains

Front Matter....Pages I-XII
Front Matter....Pages 1-1
Aerodynamics and Other Efficiencies in Transporting Goods....Pages 3-8
Commercial Vehicle Aerodynamic Drag Reduction: Historical Perspective as a Guide....Pages 9-28
The Status of Detached-Eddy Simulation for Bluff Bodies....Pages 29-45
Front Matter....Pages 47-47
Exploring the Flow Around a Simplified Bus with Large Eddy Simulation and Topological Tools....Pages 49-64
Unsteady Flow Around Cylinders with Cavities....Pages 65-74
Complex CFD for Everyday Use—Practical Applications for Vehicle Analysis....Pages 75-75
Large eddy simulation of flow around the Ahmed body....Pages 77-87
Detached-Eddy Simulation of the Ground Transportation System....Pages 89-104
Front Matter....Pages 105-105
Time Dependent vs. Steady State Calculations of External Aerodynamics....Pages 107-117
Aerodynamics of Ground Vehicles — Toward Reliable and Affordable CFD....Pages 119-119
Improved Tractor-Trailer Integration and Aerodynamics Through the Use of CFD....Pages 121-121
Large Eddy Simulation of Turbulence Via Lattice Boltzmann Based Approach: Fundamental Physics and Practical Applications....Pages 123-123
Aspects of CFD Application to Vehicle Aerodynamic Design....Pages 125-125
Front Matter....Pages 127-127
PIV Study of the Near Wake of a Pickup Truck....Pages 129-129
Applications of DDPIV to Studies Associated with Road Vehicles....Pages 131-141
Molecular Tagging Velocimetry (MTV) and Its Automotive Applications....Pages 143-155
Quantitative Flow Visualization for Large Scale Wind Tunnels....Pages 157-167
Front Matter....Pages 169-169
An Experimental Study of the Generic Conventional Model (GCM) in the NASA Ames 7-by-10-Foot Wind Tunnel....Pages 171-171
The Measurement of Wake and Gap Flows of the Generic Conventional Truck Model (GCM) using Three-Component PIV....Pages 173-184
On the Aerodynamics of Tractor-Trailers....Pages 185-205
Front Matter....Pages 169-169
RANS Simulations of a Simplified Tractor/Trailer Geometry....Pages 207-218
Computational Simulation of a Heavy Vehicle Trailer Wake....Pages 219-233
Front Matter....Pages 235-235
Drag Reduction of Two-Dimensional Bodies by Addition of Boat Tails....Pages 237-248
Drag Reduction of a Tractor-Trailer Using Planar Boat Tail Plates....Pages 249-265
RANS Simulations of Passive and Active Drag Reduction Devices for a Road Vehicle....Pages 267-275
Pneumatic Heavy Vehicle Aerodynamic Drag Reduction, Safety Enhancement, and Performance Improvement....Pages 277-302
Base Flaps and Oscillatory Perturbations to Decrease Base Drag....Pages 303-316
Front Matter....Pages 317-317
Use of Computational Aerodynamics for Commercial Vehicle Development at DaimlerChrysler....Pages 319-328
Numerical Simulation of the Flow about a Train Model....Pages 329-338
Adaptation of Eddy-Viscosity Turbulence Models to Unsteady Separated Flow Behind Vehicles....Pages 339-352
Simulation of vehicle aerodynamics using a vortex element method....Pages 353-366
Front Matter....Pages 367-367
Energetic and CFD Modeling Considerations of Thermal Management....Pages 369-369
Measurement of Underhood Temperatures with Various Ventilations....Pages 371-371
Measurement and Analysis of Underhood Ventilation Air Flow and Temperatures for an Off-Road Machine....Pages 373-383
Flow Field and Thermal Management Analysis of an Armored Vehicle Engine Compartment....Pages 385-409
Front Matter....Pages 411-411
Experiments and CFD in Train Aerodynamics: A Young and Turbulent Association Full of Potential....Pages 413-413
Recent Studies of Train Slipstreams....Pages 415-430
Aerodynamic Effects in Railway Tunnels as Speed is Increased....Pages 431-441
Flow-induced Vibration of High-Speed Trains in Tunnels....Pages 443-452
How to Reduce the Cross Wind Sensitivity of Trains....Pages 453-467
Front Matter....Pages 411-411
CFD Study of Side Wind Effects on a High Speed Train....Pages 469-469
Front Matter....Pages 471-471
Commercial CFD Code Validation for Heavy-Vehicle External Aerodynamics Simulation....Pages 473-483
Computational Parametric Study on External Aerodynamics of Heavy Trucks....Pages 485-501
Applicability of the Vortex Methods for Aerodynamics of Heavy Vehicles....Pages 503-514
Front Matter....Pages 515-515
Development of a Wind Tunnel Model Mounting Configuration for Heavy Duty Trucks....Pages 517-517
A Ground-Based Research Vehicle for Base Drag Studies at Subsonic Speeds....Pages 519-531
Splash and Spray Measurement and Control: Recent Progress in Quebec....Pages 533-547
Wind-Tunnel Evaluation of an Aerodynamic Heat Exchanger....Pages 549-561
Automated Driving of Trucks and Buses: Opportunities for Increasing Productivity and Safety While Reducing Fuel Use and Emissions....Pages 563-563
Back Matter....Pages 565-567