AT1004 AUTOMOTIVE AERODYANAMICS 3 0 0 100
At the end of the course, the students will be able to apply basic principles of aerodynamics for the design of vehicle body.
UNIT I INTRODUCTION 9
Scope, historical developments, fundamental of fluid mechanics, flow phenomenon related to vehicles, external and Internal flow problem, resistance to vehicle motion, performance, fuel consumption and performance potential of vehicle aerodynamics, engine cooling requirement,
air flow to passenger compartment, duct for air conditioning, cooling of transverse engine and rear engine.
UNIT II AERODYNAMIC DRAG OF CARS 9
Cars as a bluff body, flow field around car, drag force, types of drag force, analysis of aerodynamic drag, drag coefficient of cars, strategies for aerodynamic development, low drag profiles.
UNIT III SHAPE OPTIMIZATION OF CARS 9
Front end modification, front and rear wind shield angle, boat tailing, hatch back, fast back and square back, dust flow patterns at the rear, effects of gap configuration, effect of fasteners.
UNIT IV VEHICLE HANDLING 9
The origin of forces and moments on a vehicle, lateral stability problems, methods to calculate forces and moments – vehicle dynamics under side winds, the effects of forces and moments, characteristics of forces and moments, dirt accumulation on the vehicle, wind noise, drag reduction in commercial vehicles.
UNIT V WIND TUNNELS FOR AUTOMOTIVE AERODYNAMICS 9
Introduction, principle of wind tunnel technology, limitation of simulation, stress with scale models, full scale wind tunnels, measurement techniques, equipment and transducers, road testing methods, numerical methods.
TOTAL : 45
1. Hucho.W.H. - “Aerodynamic of Road Vehicles” - Butterworths Co., Ltd., - 1997.
1. A. Pope - “Wind Tunnel Testing “ - John Wiley & Sons - 2nd Edition, New York - 1974.
2. Automotive Aerodynamic: Update SP-706 - SAE - 1987
3. Vehicle Aerodynamics - SP-1145 - SAE – 1996.