338-0725/01 – Numerical Simulation of Pollutants and Fire Propagation (NumModPo)
| Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
| Subject guarantor | doc. Ing. Tomáš Blejchař, Ph.D. | Subject version guarantor | doc. Ing. Tomáš Blejchař, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FBI | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Students will learn about theoretical and practical approaches for the numerical solution of dispersion of pollutants in the atmosphere, through which they learn to design a mathematical model for solving the problem of this applications. An important part of the work is to evaluate solution, compare with theory and experiments and determine the limits of solvability in the field of application. This can give result in recommendations for the cases of emergency planning.
Teaching methods
Lectures
Tutorials
Summary
The course is theoretical and practical mastery of the numerical solution of dispersion of pollutants in the atmosphere possibly the spread of gaseous emissions from point, line or area sources. In doing so, may be counted relief terrain. If the student is familiar with basic aspects of thermodynamics and combustion, it is possible to solve problems of fire spreading and primarily solid combustible materials in the areas
Compulsory literature:
NIKOLAY I. KOLEV. Multiphase flow dynamics. 1, Fundamentals / - 2nd ed. Berlin : Springer, c2005 - xxxv, 753 s. : il. + 1 CD-ROM ISBN
3-540-22106-9
Recommended literature:
Way of continuous check of knowledge in the course of semester
Elaboration of individual project 35p - credits. Final Exam 65p. Final exam consists of two oral questions. Question 1 - discussion of individual project Question 2 - Theoretical qiestion focused on theory of numerical modelling of fluid flow.
E-learning
Other requirements
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Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
L - Lecture, E - Exercise
1. L.: Introduction, numerical modeling of fluid flow - various commercial systems, Fluent - physical models, turbulence models, commercial systems for the solution of flow, solved examples from the firms, environmental jobs
E.: Working on workstations, introduction to Fluent
2. L.: Turbulent and laminar fluid flow, coordinate system, the Navier-Stokes equations (laminar flow) and the continuity equation, counting rules, examples, flow with sudden expansion section
E.: Ansys Meshing, the environment, drawing basic elements, modeling of laminar flow in a rectangular space, graphical evaluation of results
3. L.: Boundary conditions for incompressible flow E.: Create a sudden expansion geometry, methods of networking in case of flow with sudden expansion flow cross-section geometry, boundary conditions
4. L.: Ansys Meshing, generation and control networkE.: Meshing 2D and 3D regions, network control, export to Fluent
5. L.: Fluent programming system, finite volume integration method for the one-dimensional continuity equation and momentum equations, an iterative cycle, the interpolation scheme, convergence (residuals, uderrelax)
E.: Modelling of laminar flow in a rectangular gap
6. L.: Mathematical models of turbulence, Reynolds stresses, time averaging, Reynolds rules, Boussinesq 's hypothesis, turbulent viscosity
E.: Graphical evaluation of results
7. L.: Statistical models of turbulence, two-equation turbulence model, wall functions
E.: Turbulent flow behind the step, turbulent boundary conditions
8. L.: General conservation equations, an example of heat equation + boundary and initial conditions, numerical methods (differential method, finite volume method), geometry and generation of mesh, methods for solving the discretized equations, LGS solver, multigrid
E.: The solution of the flow behind the step using different turbulence models and methods of evaluation
9. L.: Heat transfer, convection, conduction, conditions on the wall, the wall heat transfer
E.: Calculation of non isothermal flow in a pipe with wall heat transfer
10. L.: 3D modeling of species dispersion, comparison of concentrations in 2D and 3D
E.: Example of species dispersion, comparison of concentrations in 2D and 3D
11. L.: The flow with solid particles and drops, the species and their definitions
E.: Distribution of solid particles in the flow of the chimney
12. L.: Modelling the spread of pollution in the open and closed air, a solution of selected tasks, the role of Sutton approach
E.: Solution of individual problem
13. L.: Modelling the spread of fire, i.e. heat and combustion products
E.: Solution of individual problem
14. L.: Consultation of individual seminar problem and discussion
E.: Solution of individual problém
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction