Direct Numerical Simulation (DNS) was used for conjugate heat transfer studies of an idealized heated slab, cooled by turbulent fluid flow from both sides. A parametric analysis was performed for various Reynolds and Prandtl numbers and for various material properties of the heated slab.
COBISS.SI-ID: 26958631
A cohesive element approach to modelling of intergranular cracking on the grain level is presented. It shows that most of the early damage is initiated at intersections of grain boundaries with the external surfaces of the model. A smaller fraction of damage develops inside the model, mostly at the triple lines where several grain boundaries meet. A novelty in this work is the developed analytical expression for assessing the cohesive element response when using viscous regularization for alleviating the convergence issues.
COBISS.SI-ID: 26794279
A new method for assessment of the onsite power system reliability after an earthquake with given magnitude was developed. The method considers the design features and functional dependencies within the onsite power system and the seismic fragility of the constituting elements. Results of the method application on the model of a nuclear power plant for earthquakes with different intensities are presented.
COBISS.SI-ID: 26321959
In order to form a flat toroidal edge of the target plate of the divertor of a fusion reactor, alternative tile geometries (non-symmetric pentagon or square) were analysed with respect to the reference hexagonal design. Computational Fluid Dynamics analyses were performed from the point of view of maximum allowable thimble temperature and minimum required helium flow through the finger module of the cooling element.
COBISS.SI-ID: 26839335
The computer codes RELAP5/MOD3.3 and TRACE V5.0 were used to simulate the core reflooding experiment, which was performed on the Achilles experimental facility in Germany. Calculated results were compared to experimental data. The simulation with the TRACE code is one of the first successful simulations with a three-dimensional system code. These codes are expected to overcome the defficiencies of one-dimensional system codes with a more realistic description of phenomena in some systems.
COBISS.SI-ID: 26820903