| Course Unit Code | 338-0538/02 |
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| Number of ECTS Credits Allocated | 4 ECTS credits |
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| Type of Course Unit * | Choice-compulsory type B |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | First Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | There are no prerequisites or co-requisites for this course unit |
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| Name of Lecturer(s) | Personal ID | Name |
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| KOZ30 | prof. RNDr. Milada Kozubková, CSc. |
| RAU01 | Ing. Jana Jablonská, Ph.D. |
| Summary |
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The course examines the application of the foundations of Hydromechanics to the the following areas:
- hydraulic-lines in steady and unsteady state (hydraulic shock) - practical problems, experimental measurements, calculations, using available software (Matlab-Simulink), comparison of mathematical a experimental output
- feeding equipment (mainly pumps), specific energy pump, Order by pump - theoretical and practical proposals for a system pump, complicated circuits with pumps in Matlab-Simulink
methods for solving of pressure forces the fluid flow on general areas
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| Learning Outcomes of the Course Unit |
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| The goal is to familiarize students with experimental and numerical methods for solving the application of Hydromechanics to the fire equipment issue. Students will analyze the characteristics of series and parallel arranged lines, hydraulic hammer, pump specific energy separate and arranged in series and parallel case and power flow on surface, where they will at first dealt with a steady state follows a time-dependent tasks. They will separately compile various located tasks in the software Matlab-Simulink and then compare the results with measured values from the experiment, the student performed in the laboratory department. Results will be compared and evaluated at the defense of the test. |
| Course Contents |
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Lectures
1. Physical properties of liquids and their measurement (density, viscosity of liquids), to dependence on temperature and pressure. State variables, state equation.
2. Momentum of a water jet - force effects of fluid on surfaces and bodies, Archimedes' law, theorem on change of momentum, application of theorem on change of momentum - force effects of flowing fluid on general surfaces and bodies, pressure forces on the plate caused by the flow of liquid from the nozzle - examples, presentation of the experiment.
3. Flow of liquid from a container, parabolic theory of water jet, mathematical model of fluid flow, transfer of mass, momentum, boundary conditions, methods of mathematical modeling of turbulent flow,
4. Static characteristics of hydraulic systems, simple pipelines, resistance to movement, frictional resistance, local resistance, pressure drop and static characteristics of pipelines, measurement of pipeline characteristics. Elements in Matlab-Simulink.
5. Pressure drop - Matlab-Simulink, application of Bernoulli's equation - pressure line
6. Calculation of the static characteristics of a branched or circuited network, numerical solution - Matlab-Simulink.
7. Pumps, basic parameters, pumps in Matlab-Simulink.
8. Serial, parallel, circuit pumps. Application in Matlab Simulink
9. Circuit solution with pumps, centrifugal pump in SimHydraulics, 1D and 2D characteristics.
10. Dynamic flow characteristics, steady flow, resistance to movement, resistance to acceleration, resistance to deformation and hydraulic capacity, marking of hydraulic resistances.
11. Solution of hydraulic shock, T - link, segmented pipeline, distributor, distributor control, numerical solution - Matlab-Simulink, speed of sound in pipeline.
12. Simulation of pressure drop and static characteristics in the Matlab-Simulink program, calculation of pressure drop, calculation of static characteristics.
13. Solving the dynamics of a complex hydraulic circuit using Matlab-Simulink.
14. Consultation
Exercises
1. Physical properties of liquids, equation of state.
2. Pressure forces on surfaces, momentum.
3. Bernoulli's equation for an ideal liquid, outflow of liquid from a container, parabolic theory of a water jet.
4. Bernoulli's equation for a real liquid, calculation of losses, Re numbers, friction coefficients.
5. Introduction to Matlab-Simulink. Static characteristics of one pipeline – program 1 (measurement). Calculation of pressure drop on 1 pipe.
6. Series and parallel pipelines – program 1, branch and circuit networks, examples in the Matlab-Simulink program, definition of local resistances.
7. Calculation of pumps – suction height of the pump, input power, power, specific energy of the pump, operating point of the system. Measurement and evaluation of measurement of pump characteristics - program 2.
8. Measurement and evaluation of serial and parallel arrangement of pumps in Excel - program 2. Modeling of the characteristics of one pump in Matlab-Simulink, its input options - 1D characteristic, polynomial. Modeling of series and parallel pipelines in Matlab-Simulink and comparison with Excel.
9. Calculation of parameters for hydraulic shock, measurement of hydraulic shock - program 3. Evaluation of data from measurements in Excel - evaluation of hydraulic shock - determination of the modulus of elasticity from measurements, steady state modeling for hydraulic shock in the Matlab-Simulink program.
10. Modeling of the hydraulic shock in the Matlab-Simulink program for theoretical and measured values - modeling of the hydraulic shock for a steady state, determining the effect of the equivalent length, the valve discharge coefficient and the amount of air on the hydraulic shock.
11. Entering 1D characteristics of pumps in Matlab-Simulink. At steady state determination of constants – valve discharge coefficient, equivalent pipe length. Entering the characteristics of pumps using a polynomial. Comparison of the pump characteristic with the characteristic from the manufacturer, affine relations for the basic parameters of the pump.
12. Solving the dynamics of a complex hydraulic circuit using Matlab-Simulink.
13. Consultation on programs.
14. Consultation.
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| Recommended or Required Reading |
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| Required Reading: |
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| MILLER, D.S. Internal Flow Systems. BHRA (Information Servis). 1990. ISBN 0-947711-77-5. |
KOZUBKOVÁ, Milada a kol. Mechanika tekutin, návody pro laboratorní cvičení. Ostrava: VŠB-TU Ostrava, 2007. 113 s. (Elektronická publikace na CD ROM).
BOJKO, M., KOZUBKOVÁ, M., RAUTOVÁ, J. Základy hydromechaniky a zásobování hasivy, Sdružení požárního a bezpečnostního inženýrství Ostrava, 2007, 182 s., ISBN 80-86634-53-1.
KOZUBKOVÁ, M. Dynamika 2007, el. skripta, VŠB-TU Ostrava, 2007, 109 s.
MILLER, D.S. Internal Flow Systems. BHRA (Information Servis). 1990. ISBN 0-947711-77-5.
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| Recommended Reading: |
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| MATLAB User's Guide. The Mathworks, Inc., USA, www.mathworks.com |
DRÁBKOVÁ, Sylva a kol. Mechanika tekutin. Ostrava: VŠB-TU Ostrava, 2007. 248 s. (Elearningová učebnice).
DRÁBKOVÁ, S., KOZUBKOVÁ, M. Cvičení z mechaniky tekutin. Skripta. Ostrava: VŠB-TU Ostrava, FS, 2002, 141 str.
MATLAB User's Guide. The Mathworks, Inc., USA, www.mathworks.com
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| Planned learning activities and teaching methods |
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| Lectures, Tutorials |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Credit and Examination | Credit and Examination | 100 (100) | 51 |
| Credit | Credit | 35 | 20 |
| Examination | Examination | 65 | 20 |