ID: 0927
Course type: scientific and vocational
Course coordinator: Ilić B. Dejan
Lecturers: Božić O. Ivan, Ilić B. Dejan
Contact: Ilić B. Dejan
Level of studies: M.Sc. (graduate) Academic Studies – Mechanical Engineering
ECTS: 6
Final exam type: oral
Department: Department of Hydropower Engineering
Measurements have a very significant role in engineering practice and research activities. The measurements in hydro-energy systems include measuring fluid flow quantities and energy characteristics of hydraulic machinery, in order to determine the energy performance of turbines, pumps, fans and other turbomachines. In framework of this subject, the characteristics of valves and methods for determining the cavitation characteristics of hydraulic machines and equipment are studied in detail.
On successful completion of this course, students should be able to: 1. Organize and carry out testing of hydraulic machines (turbines, pumps, fans and turbocompressors) in the laboratory, following applicable international standards, 2. Process, present and analyze test results аnd calculate measurement uncertainty of the measured values, 3. Perform a comparative analysis of number of ways for measuring the energy parameters of hydraulic machines, 4. Recalculated efficiency from a model to a prototype of turbine, 5. Explain the calibration of pressure, flow and torque measuring devices, process the measurement results of calibration and calculate measuring uncertainty following applicable international standards and recommendations.
- The importance of testing in hydro-energy systems. Model testing of hydraulic machineries; - Standards and recommendations for model tests. Overview of measuring parameters; - Turbine model test in the laboratory; - Energy and cavitation characteristics determination of turbine models - the universal characteristics; - Turbine test in hydro-power plants; - Pump model tests in the laboratory; - Energy and cavitation characteristics determination in pump models - the universal characteristics; - Pumps test in pumping stations; - Fan test in laboratory and ventilation systems; - Compressor test in laboratory and compressor systems; - Hydro-mechanical equipment test in the laboratory; - Energy and cavitation characteristics determination of hydro-mechanical equipment (valves).
Auditory exercises: - Measurements of physical quantities in hydro-energy system; - Determination of pump energy and cavitation characteristics; - Determination of turbine energy and cavitation characteristics; - Determination of pump energy and cavitation characteristics at pump station; - Determination of the energy performance of turbines in hydro-power plant. Laboratory Exercise: - Calibration of measuring equipment; - Determination of universal characteristics of the pump and turbine model; - Fan test in laboratory and ventilation systems.
Requirements for examination: Pumps, Hydraulic turbines, Fans and turbocompressors. Preferred: Mechanical engineering measurements and sensors.
[1] Hand-outs, [2] Installation for testing the energy and cavitation features of turbine models, small hydro-power plants and hydro-mechanical equipment, [3] Pelton turbine test rig [4] Installation for flow visualization, determing pump hydraulic characteristics, variety of pump control possibilities, determing duct hydraulic characteristics [5] Installation for flow meter calibration by volume method, testing of pumps and hydro-mechanical equipment [6] Installation for flow meter calibration by volume method (56 l/s) [7] Test rig for defining energy characteristics of the axial fans and swirl flow in diffusers (swirl chamber) [8] Test rig with booster fan for fan and fluid flow phenomena investigations [9] Installation for calibrating pressure gauges [10] Calibration tunnel for velocity and pressure probes [11] Test rig for exploring swirl flow in straight ducts
Total assigned hours: 75
New material: 20
Elaboration and examples (recapitulation): 10
Auditory exercises: 5
Laboratory exercises: 25
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0
Review and grading of calculation tasks: 0
Review and grading of lab reports: 10
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 5
Activity during lectures: 0
Test/test: 0
Laboratory practice: 70
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 30
Ilić D. B., Ćantrak Đ. S. (2022): Manual for fluid flow measurements in laboratory, Fac. of Mechanical Eng. Univ. of Belgrade, Belgrade. (in Serbian); Miroslav Benišek "Hydraulic Turbines," Mechanical Engineering in Belgrade, 2020.; M Benišek., M Nedeljkovic., R Kilibarda., Gerasimović D. "The measurement techniques. Exercises in flow measurements", Mechanical Engineering, Belgrade 2006.; Raković M. M., Radenkovic R. D., Jankovic Z. N. (2024), Manual for Laboratory Exercises in Fluid Mechanics, 1st edition, Faculty of Mech. Engineering, University of Belgrade, ISBN 978-86-6060-187-4