Abstract: Even though the role of damping in rotordynamics has been known for more than half a century, some incorrect statements on the effects of hysteretic damping, particularly in the subcritical ...

Abstract: In this paper the issue of the coherent structures of turbulence developing in wall-bounded flows is addressed. After a short historical synthesis, some basic concepts are reviewed and the idea ...

Abstract: The direct numerical simulation of turbulence (DNS) has become a method of outmost importance for the investigation of turbulence physics, and its relevance is constantly growing due to the ...

Abstract: The approach of Reynolds-averaged Navier–Stokes equations (RANS) for the modeling of turbulent flows is reviewed. The subject is mainly considered in the limit of incompressible flows with constant ...

Abstract: The centrifugal softening effect is an alleged and elusive reduction of the natural frequencies of a rotating system with increasing speed which is sometimes found in finite element rotordynamics. This reduction may, in ...

Abstract: The increase of the water table level presently occurring in the city of Milan led to some leakage of groundwater in underground facilities and subway tunnels. These structures, in fact, were completed about three decades ...

Abstract: The south slope of the Vernago hydroelectric reservoir in northern Italy is subjected to a slow time-dependent movement that produced some structural damages in a service shaft located within it. With their continuation, ...

Abstract: The geotechnical design of drainage or dewatering systems requires a free surface seepage analysis to evaluate the water flux that corresponds to the sought lowering of the water table. It is observed in practice that ...

Abstract: The hydraulics of ski jumps is an issue of utmost importance in dam construction, the former being in practice the only existing solution as related to the dissipation of energy from high-speed spillway flows. Despite the ...

Abstract: Intimal hyperplasia and atherosclerosis have a predominant role in the failure of coronary artery bypass procedures. Theoretical studies and in vivo observations have shown that these pathologies ...