excellent tool for an presenting topic aerodynamics in aurimobile

1. KEVIN GEORGE
INH10ME064

2. What's the 1st thing that comes to your mind?

3.  Aerodynamics is a sub-field of fluid dynamics which is a
study of how gases interact with moving bodies.
 Applications can be so vast ranging from
 Automobile( aero planes, cars ,trucks, ships etc..)
 Architecture( bridges, buildings etc..)
 Sports
 Numerical weather prediction

4. Study of the aerodynamics of road vehicles
Goals
 reducing Drag (attain high speeds)
 minimizing noise emission,
 preventing undesired lift
 Improve stability at high speeds and
produce down force .

10. • The term down force
describes the downward
pressure created by the
aerodynamic characteristics of
a car.
• It allows it to travel faster
through a corner by holding
the car to the track or road
surface.
• It is the vertical component of
the force acting downwards,
which arises due to the airflow
over and below the car’s
surface

12.  Front wing
 The front wing or the spoiler is the first
part of the car that makes contact with
the air.
 It affects the airflow in the full length of
the car and even tiny changes can have
huge effects on the overall performance.
 Proves 42% of total down force

13. Aerofoil in Aeroplanes
Aerofoil in F1 cars

14.  Rear Wing
The rear wing helps glue
the rear wheels to the
track, but it also can
hugely increases drag (air
residence against the body
of the car). But designers
are constantly working to
use as little angle of
incidence on the rear wing
as possible without
harming overall
performance.

15.  Diffuser
The diffuser or floor, is
designed to ensure the
smoothest exit for the air
that is flowing under the
car. Designers come up
with a huge variety of
complicated shapes
because the quicker the air
exits, the more down force
the car generates, and the
higher the grip will be.

16.  Wind tunnel testing
Wind tunnels operate below the
speed of sound and the airstream is
created by large motor-driven fans.
At velocities near or above the speed
of sound, the airstream is created
either by releasing highly compressed
air from a tank at the upwind end of
the tunnel testing area, or by allowing
air to rush through the tunnel into a
previously created vacuum tank at its
downwind end.

17.  ANSIS, CATIA, ALIAS STUDIO
 ANALYZE CHANGES DURING DESIGN PHASE AND DEVELOPMENT
 REDUCES TIME TO DEVELOP OPTIMAL DESIGN
 ABLE TO STUDY INDIVIDUAL ELEMENTS MORE EFFECTIVELY

18. Advantages:
 Reduces drag
 improves fuel economy.
 stability at high speed improving the traction especially at
corners to allow variable cornering speed.
 Improves Aesthetic value
 Reduces noise
Disadvantages:
 Understeer causes the car to go straighter than the
trajectory that the driver is trying to take.
 Oversteer is when the rear wheels of a car do not track
behind the front wheels. Instead, they tend to slide out
towards the outside of the turn. This can easily cause a car
to spin.

19.  “ENHANCEMENT OF AERODYNAMIC
PERFORMANCE OF A FORMULA-1 RACE CAR
USING ADD-ON DEVICES”, B. N. Devaiah, S.
Umesh, SASTECH journal