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Fluid Mechanisms

Type of study Bachelor
Language of instruction English
Code 338-0302/06
Abbreviation TMech
Course title Fluid Mechanisms
Credits 5
Coordinating department Department of Hydromechanics and Hydraulic Equipment
Course coordinator doc. Ing. Martin Vašina, Ph.D.

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.

Literature

[1] FOJTÁŠEK, K., HRUŽÍK, L., BUREČEK, A., STONAWSKI, E., DVOŘÁK, L., VAŠINA, M.: Fluid Mechanisms - Hydraulic Mechanisms, VŠB-TU Ostrava, 2022, 227 s. Available at: https://www.fs.vsb.cz/338/cs/studium/skripta/
[2] FOJTÁŠEK, K., HRUŽÍK, L., DVOŘÁK, L, BUREČEK, A., STONAWSKI, E., VAŠINA, M.: Fluid Mechanisms - Practical Tasks and Basics of Pneumatics, VŠB-TU Ostrava, 2022, 167 s. Available at: https://www.fs.vsb.cz/338/cs/studium/skripta/
[3] EXNER, H. et al. Hydraulics, Basic Principles and Components. Würzburg, Germany: Bosch Rexroth AG., 2011. 326 p. ISBN 978-3-9814879-3-0 .
[4] GÖTZ, W. Hydraulics. Theory and Applications. Ditzingen, Germany: OMEGON, 1998. 291 s. ISBN 3-980-5925-3-7.
[5] DODDANNAVAR, RAVI BARNARD, ANDRIES. (2005). Practical Hydraulic Systems - Operation and Troubleshooting for Engineers and Technicians. Elsevier. Online version available at:
https://app.knovel.com/web/toc.v/cid:kpPHSOTET2/viewerType:toc

Advised literature

[1] EWALD, R. et al. Proportional and Servo-valve Technology. Lohr am Main, Germany: Bosch Rexroth AG, 2003. 300 p.
[2] HEHN, H. et al. Fluid Power Troubleshooting. New York : Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0.
[3] MANRING. (2005). Hydraulic Control Systems. John Wiley & Sons. Online version available at:
https://app.knovel.com/web/toc.v/cid:kpHCS0000E/viewerType:toc
SMC - eLEARNING. available from https://digital.smctraining.com/?lang=cs (username and password will be assigned by teacher, Pneumatic Systems module, Hydraulics module)
Another study support - https://www.fs.vsb.cz/338/cs/studium/studijni-opory/