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Experimental Methods in Fluid Mechanics

Prof. Pranab K. Mondal · IIT Guwahati

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About

This course deals with the experimental techniques in Fluid Mechanics. One part of the course focuses on different techniques and challenges associated with the measurement of flow features. Other part of the course has emphasis on the statistical analysis of experimental data. Thus, this course would provide an understanding on several experimental methods in Fluid Mechanics and would unveil hypotheses concerning with the cause-and-effect relationships. It represents the most valid approach to the solution of theoretical advancement in the field.

Intended audience: Undergraduate students of Mechanical/Chemical/Aerospace engg. (5th semester onwards) and postgraduate students specializing in the thermofluids/Fluid Mechanics/Aerospace/Automobiles; industry personnel associated with Fluid Machinery/automobile and aerospace engineering; faculty members associated with Mechanical/Chemical/Aerospace engg.

Prerequisites: Basic UG-level Fluid Mechanics and Thermodynamics

Lectures

Week 1 : Introduction to Experimental Methods

  1. Lec 1 : Basic concepts, Calibration YouTube
  2. Lec 2 : Dimensions, Units, Standards, Systems of dimensions, System of units, Unit conversion table YouTube

Week 2: Measurement System

  1. Lec 1 : Basic concept of dynamic measurements YouTube
  2. Lec 2 : Basic concept of dynamic measurements Contd. YouTube
  3. Lec 3 : Basic concept of dynamic measurements Contd. YouTube
  4. Lec 4 : System response and distortion, Impedance matching YouTube

Week 3: Displacement and Area Measurement

  1. Lec 1 : Dimensional measurement, Gauge blocks, The pneumatic displacement gauge YouTube
  2. Lec 2 : Dimensional measurement, Gauge blocks, The pneumatic displacement gauge-II YouTube

Week 4 : Pressure Measurements

  1. Lec 1 : Pressure Measurements: Definition of pressure and Dynamic response considerations YouTube
  2. Lec 2 : Mechanical pressure measurement devices, U-tube manometer, The inclined well type manometer YouTube
  3. Lec 3 : The aneroid barometer, Diaphragm and Bellows Gauges YouTube

Week 5 : Low Pressure Measurements

  1. Lec 1 : The Mcleod gauge, The Pirani gauge, The Ionization gauge YouTube
  2. Lec 2 : The Mcleod gauge, The Pirani gauge, The Ionization gauge Contd. YouTube
  3. Lec 3 : The Mcleod gauge, The Pirani gauge, The Ionization gauge Contd. YouTube
  4. Lec 4 : Pressure measurement using 3 holes / probes YouTube
  5. Lec 5 : Pressure measurement using 3 holes / probes Contd. YouTube

Week 6 : Flow Measurements

  1. Lec 1 : Flow obstruction flow rate measurement (venturimeter/orificemeter), the Rotameter YouTube
  2. Lec 2 : Flow obstruction flow rate measurement (venturimeter/orificemeter), the Rotameter Contd. YouTube
  3. Lec 3 : Thermal Anemometry(hot wire/hot film), Hot wire anemometer YouTube
  4. Lec 4 : Thermal Anemometry(hot wire/hot film), Hot wire anemometer Contd. YouTube
  5. Lec 5 : Laser Doppler anemometry YouTube
  6. Lec 6 : Measurement of velocity components by 3 holes and 4 holes probes YouTube

Week 7 : The measurement of Temperature

  1. Lec 1 : Ideal gas thermometer, Temperature measurement by mechanical and electrical effects YouTube
  2. Lec 2 : Ideal gas thermometer, Temperature measurement by mechanical and electrical effects Contd. YouTube
  3. Lec 3 : Thermostatic temperature, Resistance Temperature Detectors(RTD), Thermistors, Thermocouples YouTube
  4. Lec 4 : Temperature measurement by Radiation, The optical pyrometer YouTube
  5. Lec 5 : Transient response of thermal system, Thermocouple compensation, temperature measurement in high speed flow YouTube
  6. Lec 6 : Transient response of thermal system, Thermocouple compensation, temperature measurement in high speed flow Contd YouTube
  7. Lec 7 : Transient response of thermal system, Thermocouple compensation, temperature measurement in high speed flow Contd YouTube

Week 8 : Measurement of Chaotic flows

  1. Lec 1 : Constant temperature hot-wire anemometer, LDA YouTube
  2. Lec 2 : Use of PIV YouTube
  3. Lec 3 : Use of PIV Contd. YouTube
  4. Lec 4 : Use of PIV Contd. YouTube

Week 09 : Measurement of Flow angle and Torque of Turbomachineries

  1. Lec 1: Measurement of pitch angle YouTube
  2. Lec 2: Measurement of torque by dyanmometer, strain gauge, transducers YouTube

Week 10 : Micro PIV

  1. Lec 1: Measurement of microscale flow features - I YouTube
  2. Lec 2: Measurement of microscale flow features - II YouTube

Week 11 : Response Characteristics

  1. Lec 1: Transient and Frequency response consideration YouTube
  2. Lec 2: Examples YouTube

Week 12 : Statistical Analysis

  1. Lec 1: Analysis of experimental data, causes and types of experimental errors YouTube
  2. Lec 2: Rejection of data: Chauvenets Criterion with example YouTube
  3. Lec 3: Error propagation: function of two variables, several variables YouTube
  4. Lec 4: The Method of Least square with example YouTube

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IIT Guwahati
Department
Mechanical Engineering
Teacher
Prof. Pranab K. Mondal
Level
Undergraduate
Language
English
Subjects
Engineering
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
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