Cavitation erosion is one of the most problematic issues in turbomachinery. In the last years many authors developed different methods for prediction of the area and the aggressiveness of erosion. Method that was developed by our group bases on physical description of a sequence of events that lead to the formation of damage. The accuracy of the method was first tested by experiments on a simple hydrofoils and later on pumps. An improved version of the model was implemented into a CFD code, where it was shown that it is possible to predict cavitation erosion solely by numerical tools.
COBISS.SI-ID: 8990747
Knowing the physical background of the cavitation cloud separation is of a key importance for solving problems of cavitation erosion, noise and vibration in turbomachinery. The phenomenon of quasi 3D behavior of cavitation on hydrofoils with swept leading edge is known for some time. The paper, for the first time, shows the results of measurements of the velocity fields that show the unusual flow dynamics in the vicinity of the walls what consequently leads to the explanation for the 3D behavior of cavitation on 2D swept leading edge hydrofoil.
COBISS.SI-ID: 10113307
Air preheaters make a considerable contribution to the improved overall efficiency of fossil-fuel-fired power plants. This study conserned modelling of a rotary air preheater operation from a fluid dynamics point of view. A new model was developed that enables three-dimensional analysis of fluid flow and heat transfer. Based on the results a method for online monitoring of the tightness of the radial seals is proposed.
COBISS.SI-ID: 9621275
The monography deals with the determination of properties of dry and moist air, fuels and flue gases. It is divided into four topics, which follow one another in this logical order: air, fuels, combustion and flue gases. The material of the book is presented in such a way as to allow the reader to independently deal with and calculate the basic stoichiometry of combustion and the resulting flue gases as well as to determine the heat content in these gases. All the commonly used solid, liquid and gaseous fossil fuels and their main components are considered.
COBISS.SI-ID: 225706496
The significance of the paper originates form the innovative analytical framework for analyzing energy conversion efficiency of hybrid powertrains, from the development of the simulation model for hybrid powertrains and from original results. Analysis of broad spectrum of hybrid powertrain configurations clearly revealed the guidelines for powertrain optimization. On the other hand, it was also pointed out that inadequate hybrid configurations could lead to lower fuel economy compared to conventional powertrains.
COBISS.SI-ID: 9939995