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Principle of Hydraulic Machines And System Design

Prof. Pranab K. Mondal · IIT Guwahati

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About

Principle of operation of hydraulic machines and their system design is important from the perspective of their huge applications in different industries. Present course introduces the students to the fundamentals of hydraulic machines. Starting from the operational principle, students will be gradually familiarized with different concepts like velocity triangle, net head developed, finally leading to the design of their system. Important topics such as design of pumping system of two dissimilar pumps, which find practical relevance as well, will also be discussed.

Lectures

Week 1: Principle of Hydraulic Machines

  1. Lec 1 : Introduction to hydraulic machines: Classifications and operational principles YouTube
  2. Lec 2 : Euler equation for turbomachines: Net head developed by the pump/turbines YouTube
  3. Lec 3 : Net head developed (Continued), Efficiencies YouTube

Week 2: Radial and Axial flow Pumps

  1. Lec 4: Velocity triangles of pumps, effect of inlet swirl on pump operation YouTube
  2. Lec 5: Pump casings, Efficiencies and Problems YouTube
  3. Lec 6: Pump casings, Efficiencies and Problems-II YouTube
  4. Lec 7: Pump casings, Efficiencies and Problems-III YouTube
  5. Lec 8: Axial flow pump, HQ curve, System Resistance Curve - I YouTube
  6. Lec 9: Axial flow pump, HQ curve, System Resistance Curve - II YouTube
  7. Lec 10: HQ Curve, System Resistance Curve-I YouTube
  8. Lec 11: HQ Curve, System Resistance Curve-II YouTube

Week 3: Cavitation in radial flow pumps

  1. Lec 12: Introduction to Cavitation YouTube
  2. Lec 13: Condition for Cavitation and NPSH YouTube
  3. Lec 14: Net Positive Suction Head (NPSH) YouTube
  4. Lec 15: Suction number and Introduction to off design condition YouTube

Week 4: Cavitation Contd...

  1. Lec 16: Cavitation - The effect of off-design Conditions YouTube
  2. Lec 17: Cavitation Preventive Measures YouTube
  3. Lec 18: Preventive Measures and Effect on Pump Characteristic YouTube
  4. Lec 19: Problems on Cavitation YouTube

Week 5: Radial Flow Pump Operational Issues

  1. Lec 20: Introduction to Slip : Stodola Slip Model YouTube
  2. Lec 21: Departure from Euler theory YouTube
  3. Lec 22: Slip Velocity - I YouTube
  4. Lec 23: Slip Velocity - II YouTube
  5. Lec 24: Problem on slip YouTube

Week 6: Pump Design: Degree of reaction

  1. Lec 25: Degree of reaction of pump YouTube
  2. Lec 26: Degree of reaction and axial pump design YouTube
  3. Lec 27: Testing of radial flow pump I YouTube
  4. Lec 28: Testing of radial flow pump II YouTube
  5. Lec 29: Problem on radial flow pump testing YouTube

Week 7: Pump characteristics and system design

  1. Lec 30: Radial equilibrium of axial flow pump I YouTube
  2. Lec 31: Radial equilibrium of axial flow pump II YouTube
  3. Lec 32: Pump operation: series and parallel connection YouTube
  4. Lec 33: Series and parallel operation of dissimilar pumps YouTube

Week 8: Pumping system design and numerical problems of pumps

  1. Lec 34: Pumping system design YouTube
  2. Lec 35: Design of parellel pumping system YouTube
  3. Lec 36: Numerical problem on pumps I YouTube
  4. Lec 37: Numerical problem on pumps II YouTube
  5. Lec 38: Numerical problem on pumps III YouTube

Week 9: Positive displacement pump

  1. Lec 39: Working principle and Indicator diagram of PD pump YouTube
  2. Lec 40: Working principle and Indicator diagram of PD pump contd. YouTube
  3. Lec 41: Modified indicator diagram and Head-Discharge curve YouTube
  4. Lec 42: Analysis and Head-Discharge curve of PD pump YouTube
  5. Lec 43: Analysis and efficiencies of PD pump YouTube

Week 10: Positive Displacement Pump and Dimensional analysis of Hydraulic machines

  1. Lec 44: Requirement of air chamber in PD pump YouTube
  2. Lec 45: Numerical problem on PD pump with air chamber YouTube
  3. Lec 46: Similarity and dimensional analysis of hydraulic machines YouTube
  4. Lec 47: Dimensional analysis of hydraulic machines: Buckingham's ℼ theorem YouTube
  5. Lec 48: Buckingham's ℼ theorem: Specific speed of hydraulic machines YouTube

Week 11: Hydraulic Turbine: Impulse Turbine & Reaction Turbine

  1. Lec 49: Turbine Classification and Operational principle of Pelton wheel YouTube
  2. Lec 50: Velocity Triangles and analysis YouTube
  3. Lec 51: Operational Principle of Reaction turbine YouTube
  4. Lec 52: Degree of Reaction and Introduction to axial flow turbine YouTube

Week 12: Hydraulic Turbines and Cavitation

  1. Lec 53: Kaplan Turbine: Operational Principle, Turbine efficiencies YouTube
  2. Lec 54: Draft Tube for Reaction Turbine and Cavitation YouTube
  3. Lec 55: Energy Balance and NPSH YouTube
  4. Lec 56: Thoma Cavitation Factor YouTube
  5. Lec 57: Reaction Turbine: Design aspects and Characteristic Curves YouTube
  6. Lec 58: Problems on Impulse and Reaction Turbines 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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