618-3009/01 – Advanced methods of numerical simulation of metallurgical processes (PMNSMP)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 6 |
| Subject guarantor | prof. Ing. Markéta Tkadlečková, Ph.D. | Subject version guarantor | prof. Ing. Markéta Tkadlečková, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | 2020/2021 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Acquired knowledge
- The student will be able to describe the meaning and the use of numerical modelling in engineering practice
- The student will be able to determine the type of task, determine the appropriate solver and to define the conditions of calculation
Acquired skills
- The student will be able to modelling of 3D geometry, to generate the computational mesh of finite volumes and numerical modelling in ANSYS FLUENT CFD program
- The student will be able to modelling of filling and solidification of steel in the QuikCAST including the generation of computational mesh of finite differences.
- The student will be able to independently develop and design the technology of steelmaking.
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Summary
The subject continues on the subject Modeling and visualization of metallurgical processes and deepens the theoretical knowledge and practical skills in numerical modelling of metallurgical processes. The attention is focused on the study of steel flow in metallurgical reactors using numerical simulation in ANSYS FLUENT solver and the study of solidification of steel in environment simulation software QuikCAST.
Compulsory literature:
ILEGBUSI, O., J., IGUCHI, M., WAHNSIEDLER, W.: Mathematical and Physical modeling of Materials Processing Operation. 2000. 512 s.
Recommended literature:
[1] MAZUMDAR, D., EVANS, J., W.: Modeling of Steelmaking Processes. CRC Press, 1 edition, 2009. 493 s.
[2] ANSYS FLEUNT User‘s Guide.
[3] ZECHER, J., DADKHAH, F.: ANSYS Workbench Tutorial with Multimedia CD Release 12. Schroff Development Corporation. 2009. 256 s.
[4] DANTZIG, J.A., RAPPAZ, M.: Solidification. CRC Press, 1 edition, 2009. 621s.
[5] QuikCAST User‘s Manual.
[6] ANSYS FLUENT User‘s Manual.
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Elaboration of semester project and completing written tests.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Modeling flow in flow metallurgical reactors – examples of modeling of steel flow in the tundish, of steel flow in subentry nozzles, in the initial stages of filling of the bottom casting into ingots. Identification of the nature of the flow. Steady and unsteady flow conditions. Modelling of turbulent flow. .
2. Description of simulated area - the geometry of symmetric and asymmetric objects. The selection of the density and type of computational mesh. Boundary Conditions - Flow Boundary Conditions (velocity inlet, pressure inlet, mass flow inlet, pressure outlet, outflow). Determination of parameters of turbulence.
3. Definitions and modification of material properties. Using the definition of physical properties such as temperature-dependent function. Thermal analysis - determination of the heat capacity of metallic systems. Determination of the viscosity of the material.
4. Discretization schemes. Adjusting under relaxation factors. The convergence criteria.
5. Modelling of solidification of metallic systems. Equation of heat conduction.
6. Natural convection of the melt during the phase change. Solving the heat associated with phase transformations using method of finite differences, finite volumes and finite elements.
7. Microsegregation models. Macrosegregation models. Porosity prediction models. Niyam criterion.
8. Identification of the modeled area. The calculation and selection of heat transfer coefficients.
9. Definition of boundary conditions of simulation of solidification. Determination of the material properties of the modeled system - identification of phase change temperature, enthalpy vs. heat capacity, the dependence of thermodynamic properties on temperature.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction