Results 231 to 240 of about 208,857 (298)
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Applied Ocean Research, 2021
The waterjet pump cavities would unavoidably interact with inlet guide vanes (IGVs) wakes and thus to bring about dynamic loading impingements. This work jointly conducts experiments, numerical simulations, and time-frequency analysis to shed light on ...
Guo Zhao +4 more
semanticscholar +1 more source
The waterjet pump cavities would unavoidably interact with inlet guide vanes (IGVs) wakes and thus to bring about dynamic loading impingements. This work jointly conducts experiments, numerical simulations, and time-frequency analysis to shed light on ...
Guo Zhao +4 more
semanticscholar +1 more source
Journal of the Hydraulics Division, 1964
The water jet pump, when designed with experimentally obtained optimum dimensions, can achieve efficiencies in the range of 35% to 40%. The design depends on the selected nozzles and diffuser, as well as the other parts of the pump, so that the hydraulic losses incurred are kept to a minimum.
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The water jet pump, when designed with experimentally obtained optimum dimensions, can achieve efficiencies in the range of 35% to 40%. The design depends on the selected nozzles and diffuser, as well as the other parts of the pump, so that the hydraulic losses incurred are kept to a minimum.
openaire +1 more source
The Physics of Fluids
Considering the complex flow characteristics of the water-jet pump and the anisotropy of Reynolds stresses, a hybrid Reynolds-averaged Navier–Stokes/large-eddy simulation method based on von Kármán scale and nonlinear correction has been developed, while
Chao Liu, Hongxun Chen, Zheng Ma
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Considering the complex flow characteristics of the water-jet pump and the anisotropy of Reynolds stresses, a hybrid Reynolds-averaged Navier–Stokes/large-eddy simulation method based on von Kármán scale and nonlinear correction has been developed, while
Chao Liu, Hongxun Chen, Zheng Ma
semanticscholar +1 more source
Optimum Design of Water Jet Pumps
Journal of Engineering for Power, 1969A summary of an extensive program of experimental and analytical work leading to a procedure for obtaining optimized performance of water jet-pump systems is presented. The procedure is extended to include systems involving n, series-staged ejector components operating in an optimal manner as a complete pump, pipeline, ejector unit.
J. R. Cairns, T. Y. Na
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Theory and Performance of Water Jet Pump
Journal of the Hydraulics Division, 1968The theoretical maximum ideal pumping efficiency of a water jet pump is 50% at a flow ratio of unity. Pump performance can be predicted theoretically. With a pump designed with theoretically obtained optimum dimensions, a maximum efficiency of 39.8% was achieved. Efficiencies on the order of 42% could be obtained by selecting proper materials to reduce
Y. R. Reddy, Subir Kar
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Optimization of water jet pumps using numerical simulation
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2013A water jet pump is one of the best examples of a device in which liquid-jet mixing phenomena occur. Since such mixing processes are complex, the choice of turbulence model for accurate prediction of performance of the pumps is important. The aim of this numerical simulation study is to investigate effects of parameters such as the jet pump area ratio,
Yapıcı, R., Aldaş, Kemal
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Fault Classification Tool for High Pressure Water Jet Pumps
2007 IEEE Instrumentation & Measurement Technology Conference IMTC 2007, 2007In this work a set of indexes able to define a suitable "footprint" of a Water jet system has been investigated. A on-line and non-intrusive monitoring and diagnostic system has been designed implementing an algorithm defined on the basis of the proposed indexes.
ANNONI, MASSIMILIANO PIETRO GIOVANNI +2 more
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Performances of Water Jet Propulsion with PD Pump
Applied Mechanics and Materials, 2014Water jet propulsion (WJP) with positive displacement pump (PD pump), in which the suction thrust of PD pump (Due to the effect of pump suction and the influence of the suction boundary layer) and the reaction thrust of water jet are used to push watercraft forward, has many advantages like high efficiency,low noise, high maneuverability, good ...
You Sheng Yang +3 more
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Performance of a New Type of Water Jet Pump
Journal of Engineering for Industry, 1990A new type of water jet pump called the bend-type jet pump was investigated both theoretically and experimentally for its performance, with the primary and secondary fluids both being water. The jet pump of this type with comparatively low area ratios is promising to transport liquid containing large particles.
H. Yano +4 more
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