A PPT on Aerodynamics in Cars
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Transcript of A PPT on Aerodynamics in Cars
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AERODYNAMICS IN CARS
by,
HABEEB MUHAMMED.A
ROLL NO : 15
S8 ME
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INTRODUCTION
AERODYNAMICS :
Study of forces generated by motion of air on moving body.
CLASSIFACATION OF AERODYNAMICS :
external and internal, subsonic , supersonic , hypersonic
FIELDS OF APPLICATION :
aerospace engineering, design of automobiles , ships , civil
engineering , design of bridges etc.
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AERODYNAMIC FORCES ON A BODY
LIFT
(DOWNFORCE)
DRAG
WEIGHT
THRUST
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HISTORY OF EVOLUTION OF AERODYNAMICS IN CARS
DESIGN’S IN EARLY 20th CENTURY : cars with low speeds, no aerodynamic problems.
CAR’S IN THE EARLY 50’s : cars designed for big family’s , complete negligence of aerodynamics.
CARS AFTER 70’s : fuel crisis , need of economic designs , evolution of
aerodynamics.
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WHY WE NEED TO IMPROVE AERODYNAMICS IN CARS
SPEED better aerodynamics higher will be the speeds.
FUEL EFFICIENCY better aerodynamics , less work for engine.
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AERODYNAMICS IN MCLAREN F1
SPECIFICATIONS
FRONT END
REAR END
SCOOPS
WINGS Mclaren F1
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AERODYNAMIC DEVICES
SPOILERS
NACA DUCTS Increase rate of flow To expose air to areas not exposed to
direct air flow.
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METHODS TO EVALUATE AERODYNAMICS IN CARS
WIND TUNNELS • Research tool to study effect of air
moving over a solid object.• Trial and error process.• Special pressure paints for analysis.• Detailed analysis of air flow patterns.• Analyzing for the optimal design.
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SOFTWARES
DEVELOPMENTS IN CFD ANSYS, CATIA,ALIAS STUDIO ANALYZE CHANGES DURING DESIGN
PHASE AND DEVELOPMENT REDUCES TIME TO DEVELOP
OPTIMAL DESIGN ABLE TO STUDY INDIVIDUAL
ELEMENTS, MORE EFFECTIVE
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AERODYNAMIC IMPROVEMNTS IN THE CAR THAT WE ALREADY OWN
Keep your vehicle washed and waxed Remove mud flaps behind wheels Place license plate out of air flow Avoid roof-racks or carriers Close windows, close sunroof
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CONCLUSION
Aerodynamics in cars is a factor in the over all performance of the car, it should never be compromised.
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THANK YOU
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FRONT END
FRONTAL PRESSURE PRESSURE DIFFERENCE MINIMISE FRONTAL AREA REDUCE cd
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SCOOPS
ENGINE COOLING INCREASESFLOW
RATE OF AIR
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REAR END
REAR VACUM FLOW DETACHEMENT TURBULANCE
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WINGS
PRODUCE DOWNFORCE
REDUCE DRAG
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COEFFICIENT OF DRAG
Drag = 1/2xd x Cd x A Xv2
Measure of aerodynamic
efficiency.
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SPECIFICATIONS
EngineType:V12 Curb Weight : 1100 kg. Displacement:6064 cc Horsepower:627 bhp @ 7400 rpm Torque:479 lb-ft @ 4000 rpm Performance0-60 mph:3.2 sec 0-100 mph:6.3 sec Top Speed:240 mph /hr
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