AM4018 Road Vehicle Aerodynamics Syllabus:
AM4018 Road Vehicle Aerodynamics Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To import knowledge on
To understand the forces & moments influencing drag
To solve exercises related to fuel economy & drag.
To appraise upon the techniques of shape based optimization practiced in industry
To identify the influence of rider position in motorcycle aerodynamics.
To understand fundamentals of Experimental testing
UNIT I SCOPE OF ROAD VEHICLE AERODYNAMICS
Introduction, Properties of Incompressible Fluids, External Flow Phenomena Related to Vehicles, Aerodynamic Forces and Moments, Resistances to Vehicle Motion, Performance, Fuel Consumption and Fuel Economy, Strategy for Lowest Fuel Consumption.
UNIT II AIR RESISTANCE ON PASSENGER CARS
Car as a Bluff Body, Drag and Lift, Drag Fractions and Their Local Origins – Front End, Windshield and A-Pillar, Roof, Rear End, Plan View and Side Panels, Underbody, Wheels and Wheel Housings, Front Spoiler, Rear Spoiler. Strategies for Body Shape Development – Objectives, Detail Optimization, Shape Optimization, Facelift, Spoilers.
UNIT III AERODYNAMIC DRAG ON COMMERCIAL VEHICLES
Relation between Tractive Resistance, Drag Reduction and Fuel Consumption, Aerodynamic Drag Coefficients of Various Commercial Vehicles, Drag Minimization on Trucks, Buses. Add-on devices for drag reduction. Reduction of Vehicle Soiling, Water accumulation on windshield and windows.
UNIT IV MOTORCYCLE AERODYNAMICS
Development of Motorcycle Aerodynamics, Riding Dynamics and its Relationship with Aerodynamics, Methods of Measurement in Road Tests, Rider Influences – Rider and Pillion Passenger, Clothing and Helmets. Case Studies on racing models.
UNIT V WIND TUNNELS, MEASUREMENT AND TEST TECHNIQUES
Fundamentals of Wind Tunnel Technique, Tests with Reduced-Scale Models – Details of Model Construction and Test Technique, Reynolds Number Effects, Climatic Tunnels. Measuring Equipment and Transducers – Flow visualization techniques, Measurement of Aerodynamic Forces and Moments, Pressure Measurements, Measurement of the Airflow Velocity, Temperature Measurement.
TOTAL: 45 PERIODS
OUTCOMES
Upon completion of this course the students should be able to
1. Understand the forces & moments influencing drag.
2. Solve exercises related to fuel economy & drag.
3. Appraise upon the techniques of shape based optimization practiced in industry.
4. Identify the influence of rider position in motorcycle aerodynamics.
5. Expose to fundamentals of Experimental testing.
REFERENCES:
1. Hucho. W.H. – “Aerodynamic of Road Vehicles – From Fluid Mechanics to Vehicle Engineering” , Society of Automotive Engineers, U.S, Fourth edition.
2. R.H.Barnard – “Road vehicle aerodynamic design, An Introduction” , Mechaero publications, Third edition, 2010
3. T. Yomi Obidi – “Theory and Applications of Aerodynamics for Ground Vehicles” , SAE International, 2014
4. Alan Pope, Jewel B. Barlow, William H. Rae “Low speed wind tunnel testing” , John Wiley & Sons, Third edition, 1998