516-0933/01 – Flows of the High-energy Liquids (TKVE)

Gurantor departmentInstitute of PhysicsCredits0
Subject guarantordoc. Ing. Irena Hlaváčová, Ph.D.Subject version guarantorprof. Ing. Libor Hlaváč, Ph.D.
Study levelpostgraduateRequirementOptional
YearSemesterwinter + summer
Study languageCzech
Year of introduction2005/2006Year of cancellation2011/2012
Intended for the facultiesFS, HGF, FBIIntended for study typesDoctoral
Instruction secured by
LoginNameTuitorTeacher giving lectures
VAL30 doc. Ing. Jan Valíček, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Examination 0+0
Part-time Examination 0+0

Subject aims expressed by acquired skills and competences

Analyze influence of compressibility on liquid flowing by high pressures Integrate various pieces of knowledge and procedures and deduce new methods of liquid flow influencing Apply pieces of knowledge for development of new practices in generation of liquid jets Combine various methods of flow modification

Teaching methods

Individual consultations
Experimental work in labs
Project work
Terrain work


The aim of the subject is to present the basic physical ideas of specific features of the liquids expanding from the high pressures, for which the compressibility is non-omissible. The main emphasis is aimed at the insight into the basic differences of flows with Reynolds number overcoming by several orders those occurring with common turbulent flows. Special attention is aimed at liquid outflow when the liquid is compressed over 10%, especially at the physical phenomena inside the energy transducer (the nozzle), expansion outside the nozzle and flow development in the fluid or non-homogenous continuum including jet decay. Application of CFD method and its limitations is presented. Cavitation effects, pressure drop movement along the high pressure tubing, electric and magnetic field influence, etc. are discussed as well.

Compulsory literature:

Fluid Jet Technology, Fundamentals and Applications. WJTA, Saint Louis, Missouri 1999, ISBN 1-880342-01-4 Summers, D.A.: Waterjetting Technology, Chapman&Hall, 1995, Oxford, p. 882 Conference Proceedings from conferences organized by BHRGroup, WJTA and ISWJT

Recommended literature:

Hughes, W.F., Young, F.J.: The Electromagnetodynamics of Fluids, Krieger Publishing Company, 1989 Knapp, R. T.; Daily, J. W.; Hammitt, F. G. Cavitation. New York: McGraw-Hill Book Company, 1970 Reitz, R.D., Bracco, F.V.: Mechanisms of Breakup round Liquid Jets. Encyclopaedia of liquid mechanics, Volume 3 - Gas-liquid flows, N.P. Cheremisinoff (ed.), Gulf Publishing Company, Houston, Texas, 1986: pp. 233-249

Way of continuous check of knowledge in the course of semester

Test, tutorial


Other requirements

Systematic preparation for lectures.


Subject has no prerequisities.


Subject has no co-requisities.

Subject syllabus:

1. Compressibility of liquids 2. Thermodynamic phenomena at high speed closed flow of compressible liquids 3. Flow of compressible liquid 4. Liquid flow modulation 5. High speed liquid outflow into atmosphere 6. High speed liquid outflow in other than the atmosphere enviroment 7. Liquid jet 8. Liquid jet with liquid additives 9. Liquid jet with solid-state additives 10.liquid jet in special conditions of flow generations

Conditions for subject completion

Conditions for completion are defined only for particular subject version and form of study

Occurrence in study plans

Academic yearProgrammeField of studySpec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2009/2010 (P1701) Physics (1702V001) Applied Physics P Czech Ostrava Optional study plan
2009/2010 (P1701) Physics (1702V001) Applied Physics K Czech Ostrava Optional study plan
2008/2009 (P1701) Physics K Czech Ostrava Optional study plan
2008/2009 (P1701) Physics P Czech Ostrava Optional study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner