Course code LauZ4192

Credit points 1.50

Hydraulics and Pneumatics I

Total Hours in Course60

Number of hours for lectures16

Number of hours for laboratory classes8

Independent study hours36

Date of course confirmation07.02.2017

Responsible UnitInstitute of Mechanics

Course developer

author Mehānikas institūts

Ēriks Kronbergs

Dr. sc. ing.

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)

1. Main physical properties of fluids. Lecture 1h.
2. Hydrostatic pressure and its properties. Lecture 1h.
3. Compilation of the hydrostatic equilibrium differential equation. Lecture 1h.
4. Basic equations for hydrostatics. Lecture 1h.
5. Atmospheric, absolute, pressure gauge and vacuum pressure. Laboratory work: Pressure measurement. Lecture 1h, Lab 2h.
6. Fluid pressure on the surface. Lecture 1h.
7. Hydraulic press and multiplier for pressure. Lecture 1h.
8. Fluid Movement Types. Reynolds Number. Laboratory Work: Reynolds Number determination. Lecture 1h, Lab 2h.
9. Bernoulli equation for real fluid flow. Lecture 1h.
10. Energy losses in pipelines. Laboratory work: Measurement of energy losses. Lecture 1h, Lab 2h.
11. Fluid outlet through openings. Lecture 1h.
12. Fluid static and dynamic machines.
13. Pump General Operating Scheme. Lecture 1h.
14. Pump power and efficiency ratio. Lecture 1h.
15. Determining the main parameters of the centrifugal pump. Laboratory work: Pump characteristics. Lecture 1h, Lab 2h.

16. Hydrodynamic transmissions. Lecture 1h.

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 - 12 h.
2. Laboratory data processing - 24 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. International Journal of Fluid Power. ISSN 1439-9776. Pieejams: http://journal.fluid.power.net/index 1.html

Notes

The study course is included in the compulsory part of the professional Bachelor’s study program "Machine design and manufacturing" of Faculty of Engineering. 3rd study year 6th semester.