338-0319/01 – Fluid Properties (VlaTe)

Gurantor departmentDepartment of Hydromechanics and Hydraulic EquipmentCredits3
Subject guarantorIng. Lukáš Dvořák, Ph.D.Subject version guarantorIng. Lukáš Dvořák, Ph.D.
Study levelundergraduate or graduateRequirementCompulsory
Year3Semesterwinter
Study languageCzech
Year of introduction2003/2004Year of cancellation2013/2014
Intended for the facultiesFSIntended for study typesBachelor
Instruction secured by
LoginNameTuitorTeacher giving lectures
DVO31 Ing. Lukáš Dvořák, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 1+1
Combined Credit and Examination 6+2

Subject aims expressed by acquired skills and competences

Students will be able to: - select a suitable fluid for the hydraulic system - experimentally determine basic physical properties of liquids - apply knowledge of physical properties of liquids and gases in the calculations of fluid mechanisms.

Teaching methods

Lectures
Tutorials
Experimental work in labs
Project work

Summary

Scope of the course is detail investigation of selected fluid properties. The subject covers physical, chemical, ecological and operational properties of fluids used in hydraulic systems. Selected properties of compressed air used in pneumatic systems are included as well. Students will also get acquaint with certain properties of non Newtonian fluids.

Compulsory literature:

Hehn, A.H. Fluid power troubleshooting. New York : Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0

Recommended literature:

Hehn, A.H. Fluid power troubleshooting. New York : Marcel Dekker. 1995. 647 p. ISBN 0-8247-9275-0

Way of continuous check of knowledge in the course of semester

V průběhu semestru studenti provedou měření tří úloh, vyhodnotí výsledky a porovnají je s teoretickými výpočty. V závěru semestru vypracují samostatnou práci (výpočet zadaných příkladů).

E-learning

Další požadavky na studenta

no .

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Lectures: 1) Division of fluids. Physical properties of fluids - density, viscosity and its dependence on temperature, viscosity, fluid compressibility. 2) The physical properties of liquids - specific heat capacity, thermal expansion, pour point. Chemical properties of liquids - flammability, flash point, corrosivity, chemical effects on elastomers, acid number. 3) Operational properties of fluids - lubricity, thermo-oxidative stability, the influence of air in the liquid, cavitation, foaming, de-emulsification properties 4) Characteristics and parameters of compressed air - pressure, flow, density, viscosity, compressibility, differences in calculations and measurements of hydraulic and pneumatic mechanisms 5) The rheological properties of liquids - the basics of rheology, rheogram Newtonian fluids, plasticity, dilation, thixotropy, reopexie, rheological models, rheometry 6) Mineral oil - types, signs, characteristics, applications. Non-Flammable hydraulic fluids- types, properties, use 7) Environmentally friendly liquid. Environmental characteristics - physiological properties, harmful working fluids for water, biological degradability, the OECD test. Legal standards relating to the operation of petroleum products on the environment Exercise: 1) Importance of physical properties of liquids in hydraulic calculations (calculation of the friction coefficient, pressure losses, etc.). Selection of working fluids with respect to the temperature of the system. 2) Measurement of viscosity by Engler and Höppler viscometer - Program No. 1 3) Examples of the fluid compressibility, thermal expansion, specific heat capacity. 4) The calculations on the properties of compressed air, air flow measurement. Measurements of the circular velocity profile of free flow - Program No. 1 5) An experimental detection of friction coefficient in the flow of compressed air - Program No. 3 6) Individual work - calculation of the examples. 7) Consultation, Credit

Conditions for subject completion

Combined form (validity from: 1960/1961 Summer semester, validity until: 2010/2011 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 35 (35) 0
                Laboratory work Laboratory work 20  0
                Other task type Other task type 15  0
        Examination Examination 65 (65) 0
                Oral Oral examination 65  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2012/2013 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Compulsory study plan
2012/2013 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Compulsory study plan
2011/2012 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Compulsory study plan
2011/2012 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Compulsory study plan
2010/2011 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Compulsory study plan
2010/2011 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Compulsory study plan
2009/2010 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Compulsory study plan
2009/2010 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Compulsory study plan
2008/2009 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2008/2009 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan
2007/2008 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2007/2008 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan
2006/2007 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2006/2007 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan
2005/2006 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2005/2006 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan
2004/2005 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2004/2005 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan
2003/2004 (B2341) Engineering (2302R007) Hydraulics and Pneumatics P Czech Ostrava 3 Choice-compulsory study plan
2003/2004 (B2341) Engineering (2302R007) Hydraulics and Pneumatics K Czech Ostrava 3 Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner