Invited lecture on the meeting Advanced Experimental and Numerical Techniques for Cavitation Erosion Prediction, March 12, Grenoble, 2011. The lecture shows state of the art research in the field of cavitation erosion modeling. Shown are currently used CFD models and experimental models of cavitation erosion. The lecture discusses possibility of cavitation erosion prediction only using CFD models and discusses possible future research opportunities. Beside this, an optical method of cavitation erosion measurement is discussed.
B.04 Guest lecture
COBISS.SI-ID: 11827995This thesis investigates flow conditions on rotating porous disc where energy transfer from rotor to fluid occurs over a structure of porous material. Theoretical description of fluid flow through rotating porous material is given and existing scientific and expert works are presented. Construction variants of discs with different design parameters are presented. Pressure drops and local velocities in dependence on air volume flow rate are theoretically and experimentally determined for different construction variants of discs. Air flow velocity field dependence on local material structure and volume flow rate is analyzed. Experimental fluid dynamics on rotating discs includes the measurement of integral aerodynamics and acoustic characteristics, measurement of airflow local velocities and visualization of flow field. On the basis of experimental comparison with classical bladed rotor, better acoustic properties of porous disc, comparable dimensionless pressure numbers and lower integral aerodynamic efficiency are determined. Numerical simulation of homogenous rotating porous disc is performed. Experimental and numerical results show appropriate comparison of integral and local properties. The presented conclusions are suitable for multiple applications with rotating porous materials.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 12094747Theoretical background and prototype application of measurement method using electrostatic discharge sensors is presented. Main goal is to optimize the combustion process in relation to coal-dust distribution among respective burner nozzles to further reduce NOx and CO emissions and specific fuel consumption.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 12131611