Czech

3

Ing. Roman Klas, Ph.D.

Energy Institute

Completion of the course is in the form of a classified academic credit. The award of credit and its grade according to the ECTS grading scale is based on independent work on the assigned projects. The basis for the assessment of the projects are the technical reports.

Attendance at classes is compulsory and is recorded. Methods of making up missed classes are handled on an individual basis.

Programme N-SUE-P: Computational Simulations for Sustainable Energy, Master's, compulsory

26 hours, compulsory

1. Introduction to transient CFD simulations using a dynamic computational mesh. Applicability of dynamic meshes to the solution of the motion of rigid bodies in a fluid, such as gates, pistons or valve poppets. Introduction to the properties of the simulated domain and dynamic meshes.


2. Simulation using a dynamic computational mesh considering the forced motion of a two-dimensional rigid body with one degree of freedom in a fluid. The motion of the body is defined by known kinematic boundary conditions.


3. Simulation using a dynamic computational mesh considering the self-excited motion of a two-dimensional rigid body with one and three degrees of freedom in a fluid. The motion of the body is induced by the force effects of the fluid. Possibilities for incorporating mechanical system parameters into the fluid system.


4. Simulation using a dynamic computational mesh considering the forced motion of a three-dimensional rigid body with one degree of freedom in a fluid. Comparison of the results of 2D and 3D CFD simulations involving a dynamic computational mesh with one-dimensional mathematical models.


5. Introduction to multiphase CFD simulations. Definition and description of basic approaches for multiphase flow simulation.


6. Simulation of multiphase flow using Euler – Lagrange approach in the description of the continuum and dispersed phase including e.g. small particles, bubbles or droplets. Possibilities of exchanging momentum, mass and energy between discrete and liquid phases using a discrete phase model (DPM).


7. Simulation of multiphase flow using Euler – Euler approach in the mathematical description of interpenetrating continuous phases. Using the VOF model to simulate immiscible fluids such as free-surface fluid flow, stratified flow, or the motion of large bubbles in a fluid.


8. Simulation of multiphase flow using Euler – Euler approach in the mathematical description of interpenetrating continuous phases. Simplified Mixture model designed for two or more fluids or particle phases used to study homogeneous flow, sedimentation or cavitation. A complex Eulerian model also applicable, for example, to particle suspensions or chemical reactors.


9. Introduction to FSI simulations combining fluid and structural solver affecting the interaction between fluid and deformable body. Differences between one-way and two-way FSI simulation.


10. Preparation of a computational model of a two-way 3D FSI simulation including description of fluid, deformable body and solution domain properties and generation of computational meshes.


11. Preparation of a computational model of a two-way 3D FSI simulation including the setup of the structural and fluid solver, their coupling and solution monitoring options.


12. Implementation of the two-way 3D FSI simulation. Analysis of the results of the 3D FSI simulation with respect to the significant time consumption of the solution.


13. Possibilities of realization of one-dimensional two-way FSI simulation. Comparison of one-dimensional and three-dimensional two-way FSI simulation approaches and results. Coupling one-dimensional mathematical models and CFD simulations into one computational model.