A Seminar Presentation On AERODYNAMICS OF SPORTS CAR

SUBMITED BY-NAVEEN KUMAR VERMA ROLL NO-1322340037

HISTORY

In the Era of 1900-1950,There is no scope of aerodynamics.

Shape of the vehicle is not defined.

Speed of the car is improved but the design of the aerodynamics is not improved.

INTRODUCTION

• Automotive aerodynamics is the study of the aerodynamics of road vehicles. Its main goals are reducing drag and wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds.

WHAT IS AERODYNAMICS ?

• Aerodynamics is the branch of dynamics that deals with the motion of air and other gaseous fluids and with the forces acting on bodies in motion relative to such fluids.

• In the term AERODYNAMIS, AERO stands for air, DYNAMICS denotes motion. Aerodynamics is an engineering science concerned with interaction between bodies and atmosphere.

NEED OF AERODYNAMICS

SPEED

better the aerodynamic design, higher will be their speeds.

FUEL EFFICIENCY better aerodynamics , less work

for engine.

Weight.

Drag.Thrust.

FORCES ACTING ON SPORTS CAR

• Lift

• Drag

• Downforce

• Thrust

LIFT FORCE

DRAG FORCE

CORNERING FORCE

Trends in maximumcornering force,during the past 50 years

WING THEORY

Uses the same principle as an aircraft. Aircraft uses lift whereas SPORTS cars uses down-

force. Drag- another important factor on SPORTS car.

SPOILER/WINGS

It is a device whose intended design is to generate down force as air passes around it,  not simply disrupt existing airflow patterns

A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion, usually described as turbulence or drag.

 Spoilers on the front of a vehicle are often called  air dams

• AIRDAM is the front area of sport car. Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air flowing underneath the vehicle which generally reduces aerodynamic lift and drag.

FRONT END OF SPORTS CAR

Diffuser

Situated at the underside of the car behind the rear axle line.

Consists of many tunnels and splitters to control airflow.

Maximizes suction effect thus increasing down-force

Figure: diffuser

CFD Analysis of SPORTS Car

CFD RESULT OF PRESSURE

FACTORS AFFECTING AERODYNAMICS

Weight of the car

Overall widthOverall heightFront bodywork

height

CONCLUSION• Aerodynamics is now the most important item on the

car which a team can actually change, because if you look at the tires, everyone has the same tires and the engine is homologated. So aerodynamics is the single biggest item we can change - the biggest performance item on the car.

• Although they may seem restricted by tight regulations, these regulations only add more challenge to the game that engineers must play.

ANY QUERY…