EFFECT FROM THE ACADEMIC YEAR 2013 - 2014

AE 454

AUTOMATIVE AERODYNAMICS

(Elective-II)

Instruction                                              4              Periods per week

Duration of University Examination      3              Hours

University Examination                          75            Marks

Sessional                                                 25            Marks

UNIT-I

Scope of automotive aerodynamics - historical development trends - Fundamental of fluid mechanics - Flow phenomenon related to vehicles - External & Internal flow problem - Resistance to vehicle motion - Performance - Fuel consumption and performance - Potential of vehicle aerodynamics.

UNIT-II

Aerodynamic Drag of Cars: 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: 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 - The origin offerees and moments on a vechile - side wind problems - method to calculate forces and moments - vehicle dynamics under side winds - the effects of forces and moments - Characteristics offerees and moments - Dirt accumulation on the vehicle

-  wind noise - drag reduction in commercial vehicles.

UNIT-V

Wind Tunnels For Automotive Aerodynamic: Principle of wind tunnel technology - Limitation of simulation - Stress with scale models - fiill scale wind tunnels - measurement techniques - Equipment and transducers - road testing methods - Numerical methods.

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