338-0302/06 – Fluid Mechanisms (TMech)
Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Ing. Martin Vašina, Ph.D. |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 3 | Semester | winter |
| | Study language | English |
Year of introduction | 2016/2017 | Year of cancellation | |
Intended for the faculties | FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Students will learn the basic concepts of fluid mechanisms: hydraulic mechanism, pneumatic mechanisms, hydraulic and pneumatic circuit. Become familiar with the composition of hydraulic and pneumatic circuits, basic hydraulic and pneumatic components, their functions, structures, characteristics using the circuit. Students will learn to count instances hydraulic and pneumatic circuits in steady state and solve the starting and braking hydraulic actuators. Learn to design simple hydraulic and pneumatic circuits and compile them on trainer in the laboratory. Students acquire basic knowledge of the operation, maintenance, measurement and diagnostics of hydraulic and pneumatic equipment.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Project work
Summary
In the subject "Fluid Mechanisms", students deal with function, structure, properties and applications of fluid, i.e. hydraulic and pneumatic mechanisms. The subject is divided into the following sections: general introduction, basic calculations of fluid mechanisms, elements of fluid systems, their construction, functions and characteristics, hydraulic and pneumatic drives and transmissions, including ways of their control, application of fluid mechanisms. The exercise is focused on calculations of fluid mechanisms and laboratory measurements.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
1 test from graphical symbols (10 points)
2 programmes (25 points)
Exam test (25 points)
Oral exam (40 points)
E-learning
Other requirements
Additional requirements for the student are not required. .
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Week Lectures
1. Fluid mechanism, fluid drive, fluid circuit.
2. Hydraulic and pneumatic circuits: composition, graphical symbols of elements, functional circuit diagrams. Basic hydraulic and pneumatic circuits.
3. Working fluids of hydraulic circuits: properties, types, applications. Compressed air and its properties.
4. Pressure energy sources - hydraulic pumps: design, function, parameters, characteristics, control.
5. Rotary hydraulic motors and actuators: construction, functions, parameters.
6. Hydraulic cylinders: design, function, parameters.
7. Flow direction control elements: directional valves, check valves, pilot operated check valves.
8. Flow size control elements: throttle valves, flow control valves, orifices, and throttles.
9. Pressure control valves: pressure relief and reducing valves.
10. Proportional control technology, applications of proportional control technology.
11. Fundamentals of servo engineering and its applications.
12. Accessories for hydraulic and pneumatic circuits: accumulators, filters, pipes, hoses, tanks, coolers, etc.
13. Introduction to pneumatic mechanisms.
Questions to exam
1. Basics of hydromechanics - Pascal´s law, Law for pressure propagation, Equation of continuity, laminar and turbulent flow, major(local) and minor pressure drops, Bernoulli´s equation.
2. Fluid mechanisms - advantages, disadvantages, applications.
3. Fluid mechanisms - energy transfer (principle), basic principle of hydraulic systems (figure and description).
4. Fluids in systems - their purpose in systems, types, applications.
5. Hydrostatic converters - types, purpose, ideal converters (equations).
6. Hydrostatic converters - real converters (equations), efficiencies.
7. Basic characteristics of real rotary converters.
8. Rotary hydraulic pumps - types, basic principles, advantages, and disadvantages.
9. Rotary hydraulic motors - types, basic principles, advantages, and disadvantages.
10. Rotary actuators - types, basic principles, advantages, and disadvantages.
11. Hydraulic cylinders - types, basic principles, advantages, and disadvantages.
12. Check valves, shut-off valves, cartridge valves - types, basic principles, applications, graphical symbols.
13.Directional valves - types, basic principles, applications, graphical symbols.
14. Throttle valves - types, flow equation, basic principles, applications, graphical symbols, characteristics.
15. 2-way and 3-way flow control valves - their purpose, basic principles, applications.
16. Pressure control valves - types, basic principles, applications, graphical symbols.
17. Accumulators - types, basic principles, advantages, and disadvantages.
18. Accumulators - their functions in systems, examples of their applications in hydraulic systems (figures).
19. Filters and filtration technology - filter types, purpose, location in systems.
20. Tanks - purposes, types, heat flow, stabilization circuit (temperature, filtration).
21. Heat exchangers - types, power equations.
22. Pressure intensifiers - their purpose in systems, types, applications, pressure gain.
23. Electrohydraulic components in hydraulic systems - purpose, function, types, characteristics.
24. Basics of pneumatic mechanisms.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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