Course Details

Thermomechanics

Academic Year 2023/24

BTA015 course is part of 1 study plan

BPC-EVB Summer Semester 2nd year

The course is focused on thermomechanics, heat transfer and fluid mechanics and mechanics for engineering applications.

Theory of heat transfer in building services. Thermal properties of materials, elementary heat processes. Vapour and conditions of vapour. Thermal processes, their dynamic, analytical and numerical solution. Heat transfer by natural and forced convection. Heat transfer by phase changes. Heat transfer by radiation. Principles of heat exchangers in building services. Special problems in heat and mass transfer in building services.

Course Guarantor

Institute

Syllabus

1. Introduction to thermomechanics, laws of thermodynamics, thermomechanical quantities, thermomechanical properties of materials, thermal diagrams, basic thermodynamic processes.
2. Stationary heat conduction, thermo-technical properties of substances, Fourier law, thermal diffusion equation, stationary heat conduction by cylindrical wall and flat internal heat source, minimum and critical thickness of pipe insulation.
3. Non-stationary heat conduction, criteria of thermomechanical similarity in heat conduction. Symmetrical cooling and heating of a wall and a cylinder. Cooling and heating of the semi-solid. Heat conduction in a rib.
4. Heat transfer in natural and forced convection. Thermomechanical similarity criteria for heat transfer. Heat transfer by a external forced convection. Forced and natural convection in a closed pipe.
5. Heat transfer by radiation. Optical properties of surfaces. Laws of radiation.
6. Sharing of heat during group changes. Changes in melting - solidification, evaporation - condensation. Boiling and condensation phases. Convective vapor and condensation in the pipe.
7. Heat exchangers. Countercurrent, countercurrent, crossover and changeover exchangers. NTU and LMTD methods of calculation heat exchangers.
8. Hydrostatic and relative stady stay of fluids.
9. Hydrodynamics. Equations of Continuity, Euler, Navier-Stokes and Bernulli's equations. Principles of velocity and pressure measurement.
10. Laminar and turbulent flow of fluids. Darcy-Weisbach and Reynolds equations.
11. Pipe pressure losses. Hydraulically smooth and rough piping. Flow of Liquids from Containers.
12. Unsteady motion of fluids. The two-phase free surface flow.
13. Inner and outer aerodynamics. Potential flow, free flow, flow past an obstacle, Magnus phenomenon, air jet interaction.

Prerequisites

Knowledge of basic physical quantities, theory (kinetic theory of gases, basic state equations of fluids) and physical laws in the field of heat and substance transfer. Basic knowledge of integral and differential calculus.

Language of instruction

Czech

Credits

5 credits

Semester

summer

Forms and criteria of assessment

course-unit credit and examination

Specification of controlled instruction, the form of instruction, and the form of compensation of the absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Offered to foreign students

Not to offer

Course on BUT site

Lecture

13 weeks, 2 hours/week, elective

Syllabus

1. Introduction to thermomechanics, laws of thermodynamics, thermomechanical quantities, thermomechanical properties of materials, thermal diagrams, basic thermodynamic processes. 2. Stationary heat conduction, thermo-technical properties of substances, Fourier law, thermal diffusion equation, stationary heat conduction by cylindrical wall and flat internal heat source, minimum and critical thickness of pipe insulation. 3. Non-stationary heat conduction, criteria of thermomechanical similarity in heat conduction. Symmetrical cooling and heating of a wall and a cylinder. Cooling and heating of the semi-solid. Heat conduction in a rib. 4. Heat transfer in natural and forced convection. Thermomechanical similarity criteria for heat transfer. Heat transfer by a external forced convection. Forced and natural convection in a closed pipe. 5. Heat transfer by radiation. Optical properties of surfaces. Laws of radiation. 6. Sharing of heat during group changes. Changes in melting - solidification, evaporation - condensation. Boiling and condensation phases. Convective vapor and condensation in the pipe. 7. Heat exchangers. Countercurrent, countercurrent, crossover and changeover exchangers. NTU and LMTD methods of calculation heat exchangers. 8. Hydrostatic and relative stady stay of fluids. 9. Hydrodynamics. Equations of Continuity, Euler, Navier-Stokes and Bernulli's equations. Principles of velocity and pressure measurement. 10. Laminar and turbulent flow of fluids. Darcy-Weisbach and Reynolds equations. 11. Pipe pressure losses. Hydraulically smooth and rough piping. Flow of Liquids from Containers. 12. Unsteady motion of fluids. The two-phase free surface flow. 13. Inner and outer aerodynamics. Potential flow, free flow, flow past an obstacle, Magnus phenomenon, air jet interaction.

Exercise

13 weeks, 2 hours/week, compulsory

Syllabus

1. Introduction to thermomechanics, laws of thermodynamics, thermomechanical quantities, thermomechanical properties of materials, thermal diagrams, basic thermodynamic processes. 2. Stationary heat conduction, thermo-technical properties of substances, Fourier law, thermal diffusion equation, stationary heat conduction by cylindrical wall and flat internal heat source, minimum and critical thickness of pipe insulation. 3. Non-stationary heat conduction, criteria of thermomechanical similarity in heat conduction. Symmetrical cooling and heating of a wall and a cylinder. Cooling and heating of the semi-solid. Heat conduction in a rib. 4. Heat transfer in natural and forced convection. Thermomechanical similarity criteria for heat transfer. Heat transfer by a external forced convection. Forced and natural convection in a closed pipe. 5. Heat transfer by radiation. Optical properties of surfaces. Laws of radiation. 6. Sharing of heat during group changes. Changes in melting - solidification, evaporation - condensation. Boiling and condensation phases. Convective vapor and condensation in the pipe. 7. Heat exchangers. Countercurrent, countercurrent, crossover and changeover exchangers. NTU and LMTD methods of calculation heat exchangers. 8. Hydrostatic and relative stady stay of fluids. 9. Hydrodynamics. Equations of Continuity, Euler, Navier-Stokes and Bernulli's equations. Principles of velocity and pressure measurement. 10. Laminar and turbulent flow of fluids. Darcy-Weisbach and Reynolds equations. 11. Pipe pressure losses. Hydraulically smooth and rough piping. Flow of Liquids from Containers. 12. Unsteady motion of fluids. The two-phase free surface flow. 13. Inner and outer aerodynamics. Potential flow, free flow, flow past an obstacle, Magnus phenomenon, air jet interaction.