An optical parametric oscillator and a Ti:sapphire laser are used as a pump source for the generation of high-order vibrational stimulated Raman emission in the vacuum ultraviolet region. This tunable laser is employed as an excitation/ionization source in a supersonic jet/multiphoton ionization/ time-of-flight mass spectrometric study of benzene. The merits and potential advantages of this app...

The exhalant jet flow of mussels in conjunction with currents and/or other mussels may strongly influence the mussels’ grazing impact. Literature values of mussel exhalant jet velocity vary considerably and the detailed fluid mechanics of the near-mussel flow generated by the exhalant jet has hitherto been uncertain. Computational modelling of this phenomenon depends on knowledge of the velocit...

Cavitation can cause noise in the water-jet pump. If cavitation occurs pump, hydraulic components pump are prone to erosion. The surface erosion reduces energy delivery efficiency and increases maintenance costs. decline performance will lead instability of entire system. In this paper, flow structure is studied by method numerical simulation experiment, which provides a reference for predictio...

This paper describes the related research work in field of fluid-induced vibration centrifugal pumps conducted by many researchers. In recent years, all walks life have put forward higher demands for performance which drives investigation on root cause pump and development guidelines design low-vibration pumps. Fluid-induced excitation is most important significant source vibration. Understandi...

In this paper, the fine/turbo software of NUMECA was used. Based on three-dimensional steady Reynolds averaged N-S equations, S-A turbulence model used to calculate relationship between tip clearance and diameter impeller, which were δ = 0.1%, 0.3%, 0.5% 0.7% respectively. The flows four water jet axial flow pumps with different clearances numerically studied at rates. results indicate that siz...