French
English
Passive flow control techniques, notably the successful application of vortex generators in aerodynamics, have revolutionized the alteration of boundary layer separation characteristics. By effectively delaying and suppressing separation through pressure gradient reduction and the induction of streamwise vortices, these techniques have found widespread use in aerodynamics. However, their potential in hydrodynamic applications, particularly in mitigating cavitation, remains relatively unexplored.
This research project addresses this gap by investigating the transfer of knowledge from 2D vortex generators, specifically micro textures, to practical 3D applications in centrifugal pumps. The primary focus is on numerical simulation, as well as the manufacturing and experimental assessment of micro vortex generators with micro-textures for analyzing the extent and inception of cavitation influenced by vortex generators.
Currently in the validation phase of cavitation models and the design and manufacturing of vortex generators on the impeller, this study aims to optimize static designs for enhanced performance across a realistic range of operating conditions in hydraulic systems. By delving into the unexplored realm of hydrodynamic vortex generator applications, this research strives to contribute valuable insights and solutions to the challenges posed by cavitation in centrifugal pumps.
Mahshid Zaresharif
PhD student, Dublin City University