CAE337 Experimental Aerodynamics Syllabus:
CAE337 Experimental Aerodynamics Syllabus – Anna University Regulation 2021
COURSE OBJECTIVE:
• To learn the basic measurement technique in Fluid mechanics.
• To provide extensive treatment of the operating principles and limitations of pressure and temperature measurements.
• To cover both operating and application procedures of hot wire anemometer.
• To describe flow visualization techniques and to highlight in depth discussion of analog methods.
• To understand the importance of special flows and error analysis.
UNIT I BASIC MEASUREMENTS IN FLUID MECHANICS
Objective of experimental studies – Fluid mechanics measurements – Properties of fluids – Measuring instruments – Performance terms associated with measurement systems – Direct measurements – Analogue methods – Flow visualization – Components of measuring systems – Importance of model studies.
UNIT II WIND TUNNEL MEASUREMENTS
Characteristic features, operation and performance of low speed, transonic, supersonic and special tunnels – Power losses in a wind tunnel – Instrumentation and calibration of wind tunnels – Turbulence- Wind tunnel balance – Wire balance – Strut-type – Platform-type – Yoke-type – Pyramid type – Strain gauge balance – Balance calibration.
UNIT III FLOW VISUALIZATION AND ANALOGUE METHODS
Visualization techniques – Smoke tunnel – Hele-Shaw apparatus – Interferometer – Fringe Displacement method – Schlieren system – Shadowgraph – Hydraulic analogy – Hydraulic jumps – Electrolytic tank.
UNIT IV PRESSURE, VELOCITY AND TEMPERATUREMEASUREMENTS
Pitot – static tube characteristics – Velocity measurements – Hot-wire anemometry – Constant current and Constant temperature Hot-Wire anemometer – Pressure measurement techniques – Pressure transducers – Temperature measurements.
UNIT V SPECIAL FLOWS AND UNCERTAINTY ANALYSIS
Experiments on Taylor-Proudman theorem and Ekman layer – Measurements in boundary layers – Data acquisition and processing – Signal conditioning – Uncertainty analysis – Estimation of measurement errors – External estimate of the error – Internal estimate of the error – Uncertainty calculation – Uses of uncertainty analysis.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
Students can able to
CO1: Explain the knowledge on measurement techniques in aerodynamic flow.
CO2: Analysis the Lift and drag measurements through various techniques in wind tunnel
CO3: Apply the flow visualization technique to study flow pattern of aerodynamic model.
CO4: Illustrate the Specific instruments for flow parameter measurement like pressure, velocity
CO5: Apply the Wind tunnel boundary corrections and Scale effects
TEXT BOOKS:
1. Rathakrishnan, E., “Instrumentation, Measurements, and Experiments in Fluids,” CRC Press – Taylor & Francis, 2007.
2. Robert B Northrop, “Introduction to Instrumentation and Measurements”, Second Edition, CRC Press, Taylor & Francis, 2006.
REFERENCES:
1. Bradsaw “Experimental Fluid Mechanics”, Elsevier, 2nd edition, 1970.
2. Pope, A., and Goin, L., “High Speed Wind Tunnel Testing”, John Wiley, 1985.