338-0720/02 – Numerical Simulation of Pollutants and Fire Propagation (NumModPo)

Gurantor departmentDepartment of Hydromechanics and Hydraulic EquipmentCredits5
Subject guarantordoc. Ing. Tomáš Blejchař, Ph.D.Subject version guarantordoc. Ing. Tomáš Blejchař, Ph.D.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year2Semesterwinter
Study languageCzech
Year of introduction2007/2008Year of cancellation
Intended for the facultiesFBIIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
BLE02 doc. Ing. Tomáš Blejchař, Ph.D.
BOJ01 doc. Ing. Marian Bojko, Ph.D.
KOZ30 prof. RNDr. Milada Kozubková, CSc.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Part-time Credit and Examination 14+0

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:

INCROPERA, F. a kol. Fundamentals of Heat and Mass Transfer, 6. edition, John Wiley and Sons 2007, 996p., ISBN 978-0-471-45728-2 ANSYS FLUENT INC. FLUENT User’s guide. Available from local Help of ANSYS Fluent

Recommended 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

Additional study materials

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

. .

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

Full-time form (validity from: 2011/2012 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of pointsMax. počet pokusů
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 35  20
        Examination Examination 65  20 3
Mandatory attendence participation: To complete the credit, students have to submit the project. Participation in seminars min 80%. On the base of sucessfully comlete cretit, student can take an exam. It consist of oral part 1) defence of the project and 2) theory.

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Conditions for subject completion and attendance at the exercises within ISP: To complete the credit, students have to submit the project. On the base of sucessfully comlete cretit, student can take an exam. It consist of oral part 1) defence of the project and 2) theory.

Show history

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