Course code VidEB014
Credit points 2
Hydraulics and Pneumatics I
Total Hours in Course60
Number of hours for lectures14
Number of hours for seminars and practical classes0
Number of hours for laboratory classes8
Independent study hours32
Date of course confirmation13.12.2023
Responsible UnitInstitute of Mechanics and Design
Course developer
Jānis Kjakste
Mg. sc. ing.
Replaced course
LauZ4192 [GLAU4192] Hydraulics and Pneumatics I
Course abstract
The aim of the study course is to identify the balance of the forces in the fluid and gas, and the flow laws, flow regimes, hydrostatic, hydrodynamic hydraulic and pneumatic machines, operating principles, parameters and operating conditions, based on the basic rules of fluid mechanics. Students learn the methods of calculating hydraulic and pneumatic systems. In theory and in practice, pneumatic equipment management systems and control capabilities are mastered.
Learning outcomes and their assessment
Knowledge - Understands the basic rules of fluent mechanics, the construction and operation of static and dynamic hydraulic and pneumatic equipment and machines, the constructive construction and operation of pumps and compressors together with the pipeline - Homework.
Skills - is able to assess the laws of equilibrium and movement of the fleet from the engineering point of view, which operate in reservoirs and pipelines filled with fluids, and through openings through which discharge takes place depending on the mode of movement - Laboratory works.
Competence - is able to choose the appropriate hydraulic equipment for certain conditions of operation, design elements of receptacles, nozzles and water supply systems - Laboratory works.
Course Content(Calendar)
In full-time studies:
1. Main physical properties of the fluids. Lecture 1 HR.
2. Hydrostatic pressure and its properties. Lecture 1 HR.
3. Drawing up a differential equation for hydrostatic equilibrium. Lecture 1 HR.
4. Basic equation for hydrostatics. Lecture 1 HR.
5. Atmospheric, absolute, manometric and vacuum pressure. Laboratory work: pressure measurement. Lecture 1 HR, Lab. d. 2 h.
6. Fluid compressive force on the surface. Hydraulic press relationships. Lecture 1 HR.
7. Types of movement of fluids. Reynolds number. Lab job: Determination of Reynolds' figure. Lecture 1 HR, Lab. d. 2 h.
8. Bernulli equation for real fluid flow. Lecture 1 HR.
9. Energy losses in pipelines. Laboratory work: Determination of energy losses. Lecture 1 HR, Lab. d. 2 h.
10. Fluid drainage through openings. Lecture 1 HR.
11. Static and dynamic fluidic machines. Lecture 1 HR.
12. General operating diagram of the pump. Pump power and efficiency. Lecture 1 HR.
13. Determination of the main parameters of the centrifugal pump. Laboratory work: Centrifugal pump characteristic curves. Lecture 1 HR, Lab. d. 2 h.
14. Hydrodynamic gears. Lecture 1 HR.
Part-time extramural studies:
All the topics intended for full-time studies are covered, yet the number of contact hours is ½ of the specified number of hours.
Requirements for awarding credit points
Test
The test consists of: developed and successfully defended laboratory works and performed homework.
Description of the organization and tasks of students’ independent work
1. Homework. Venturi nozzle calculation - 10 h.
2. Laboratory data processing - 20 h.
Criteria for Evaluating Learning Outcomes
The student successfully defends the laboratory work, if he has made the necessary calculations and is able to answer any control question for the job.
Homework is credited if the student is able to explain the calculations done in it.
Compulsory reading
1. Birzietis G., Kaķītis A., Kronbergs Ē., Mežs A., Vizbulis J. Lauksaimniecības hidraulika. Uzdevumi. [b.v.] 2002. 64 lpp.
2. Lielpēters P., Dorošenko R., Geriņš Ē. Fluidtehnika. Rīga: RTU, 2005. 183 lpp.
3. Lielpēters P., Ķirsis T., Kravalis K., Torims T. Fluīdu mehānika. Rīga: RTU Izdevniecība, 2009. 104 lpp.
Further reading
1. Kronbergs Ē. Hidraulika un hidropiedziņa. Metodiskie norādījumi. Jelgava, 2015. 82 lpp.
2. Merkle D., Štraiders B., Toms M. Hidraulika. Apz. D. LB. - TP 501 - LV4. izdevums 01/92. Rīga: Festo, 2001. 283 lpp.
3. Joseph D., Renardy Y. Fundamentals of Two – Fluid Dynamics. New York: Springer, 1993. 441 p.
Periodicals and other sources
1. Fluid Power Journal ISSN: 1073-7898. Pieejams arī: http://fluidpowerjournal.com
Notes
The study course is included in the compulsory part of the professional Bachelor’s study program "Machine design and production" of Faculty of Engineering and Information Technologies.