A wear-ring is an important part of the centrifugal pump. The leakage flow in clearance and main at impeller inlet form crossed mixed flows perpendicular to each other. Large eddies shocks are produced intersection two due great velocity difference different directions, resulting losses, unsteady flow, even flow-induced vibration. Consequently, pump performance, pressure pulsation vibration, ot...

Two types of vibrissal surface structures, undulated and smooth, exist among pinnipeds. Most Phocidae have vibrissae with undulated surfaces, while Otariidae, Odobenidae, and a few phocid species possess vibrissae with smooth surfaces. Variations in cross-sectional profile and orientation of the vibrissae also exist between pinniped species. These factors may influence the way that the vibrissa...

In this paper, the flow-induced vibration and flutter instability of cantilever carbon nanotubes conveying fluid and modeled as a thin-walled Timoshenko beam are investigated. Analytically nonlocal theory, transverse shear and rotary inertia effects are incorporated in this study. The governing equations and the boundary conditions are derived through Hamilton's principle. Numerical analysis is...

With the increase in thermal power capacity, ultra supercritical units have become the mainstream of power industry. At the same time, with the improvement of the steam parameters and the lengthening of shafting, the production of steam flow excited vibration is frequent in the ultra supercritical units, which may seriously affect the reliability of the unit. This paper has taken steam flow exc...

The hemodynamic environment of an arteriovenous (AV) graft differs from that of arterial grafts because mean flow rates are typically 10 times greater. This increased flow rate can create a weakly turbulent state, which alters the biomechanical environment greatly and may play a role in AV graft failure. A canine animal study was conducted to simulate the hemodynamic environment of a human AV g...