516-0940/01 – Physical Charakteristics of Liquid Jets (FCHKP)
Gurantor department | Institute of Physics | Credits | 0 |
Subject guarantor | prof. Ing. Libor Hlaváč, Ph.D. | Subject version guarantor | prof. Ing. Libor Hlaváč, Ph.D. |
Study level | postgraduate | Requirement | Optional |
Year | | Semester | winter + summer |
| | Study language | Czech |
Year of introduction | 2003/2004 | Year of cancellation | 2011/2012 |
Intended for the faculties | HGF, FS | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
To interpret and generalize theoretical and practical knowledge of liquid decomposition and spraying. To analyse the conditions of origin of high-velocity liquid jet, especially the outflow of liquid from the nozzle and separation or spraying of liquid jet accordint to many factors and conditions.
Teaching methods
Lectures
Individual consultations
Summary
The subject includes theoretical and practical knowledge of disintegration and
spaying of liquids. The physical ground and physical quantities influencing
fineness of spraying are regarded. The student is got acquainted with the
process of spraying and methods of research of liquid stream disintegration.
The process in the course of the fuel combustion and knowledge exploitation
during burning follows.
Another substantial part represents the study of the high-energy liquid jet.
Compulsory literature:
KNAPP, R. T.; DAILY, J. W.; HAMMIT, F. G. Cavitation. New York: McGraw-Hill
Book Company, 1970.
IRA Cohen: Fluid Mechanics, 2004
R.Peter King: Introduction to Practical Fluid Flow, 2002
Recommended literature:
Y.Nakayama: Introduction to Fluid Mechanics, 1999
Papers in Proceedings of the Conference series of the BHR Group (Jetting
Technology/Water Jetting since 1972 each two years).
Papers in Proceedings of the Conference series of the WJTA (American Waterjet
Conferences since 1981 each two years).
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Systematic preparation for lectures.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. FATE liquid RAY
The causes of decay and shapes the beam liquid. Theory nevířivého and eddy
dispensers. Areas and criteria for disintegration of liquid jet. Maximum diameter
drops of liquid and its calculation.
2. Spraying liquids
Physical properties of liquids. Physical principle of spraying. Rating
Quality dispersed liquid. Distribution characteristics of the spray.
3. TYPES spraying liquids
Pressure injection, rotary, ultrasonic and electrostatic spraying.
The characteristic size of droplets in terms of types of dispensers.
4. METHODS OF STUDY spray LIQUID FUELS
Measurement of injection and power factor, speed,
kinetic energy range and beam. Measurement of spray angle and spatial
distribution of drops. Geometric characteristics of the nozzle.
5. METHODS OF MEASURING THE SIZE OF DROP FUEL
The method of capturing and solidifying drops, shock and optical methods, short-term speed photography and cinematography drops, electrical methods, weight
and thermal.
6. USE spray
Combustion of liquid fuels, preparing a mixture of internal combustion engines, spray
paints, coatings, agricultural crops, aerosol mist
in medicine. Hygiene and safety work during spraying of liquid fuels.
7. Sputtering, BURNING AND BURNING OF LIQUID FUELS
Atomisation of petrol and diesel engines. Fuel injection
nozzles. Ignition and combustion of liquid fuels rozprášeného. Resize
drops to combustion theory, combustion of fuel drops. Flame structure and processes in the combustion chamber. Requirements for the burners. Mathematical modeling of burner areas.
8. HIGH SPEED LIQUID BEAM
Generation and classification of high-speed liquid jet. Discharge
liquid medium from the nozzle. Spreading liquid jet environment. Effect
liquid jet of material. Violations of liquid jet materials.
9. Outflow of liquid from the TIP
The theoretical description of the discharge liquid. The effectiveness of the beam on the liquid material.
Velocity profile at outflow jet of liquid (water) from the nozzle.
10.VYSOKORYCHLOSTNÍ BEAM with abrasives
Interaction liquid jet with abrasive particles in the mixing chamber
and the rectifier tube. The break-up of abrasive material, particle acceleration
the rectifier tube. The parameters of abrasive jet (particle size,
flow of liquids and abrasive materials, abrasive jet speed).
11.PORUŠENÍ MATERIAL BEAM high-speed liquid
Effect of nozzle diameter, fluid pressure, nozzle distance from the surface
material, flow rate instrument, the angle of the beam at depth
material.
12.KVALITA SURFACE MATERIALS
The structure of surfaces generated by high-speed cutting technology
liquid jet. Optical methods for measurement of surface structures.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
Předmět neobsahuje žádné hodnocení.