Results 31 to 40 of about 628,564 (131)
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 The linear jet propulsion system, unlike pump‐jets which are widely used in underwater bodies, is installed inside a tunnel under the vessel and can be used for high‐speed crafts, tugs, and service boats. However, this system has not received adequate attention by researchers, which is the subject of the current study.
Negin Donyavizadeh +2 more
wiley +1 more source
Influence of Various Stator Parameters on the Open-Water Performance of Pump-Jet Propulsion
Journal of Marine Science and Engineering, 2021 In order to improve the hydrodynamic performance of pump-jet propulsion (PJP) when matching stator with the rotor, the RANS method with SST k-ω turbulence model is employed to study the influence of six kinds of stator parameters, which are classified ...
Fuzheng Li +4 more
doaj +1 more source
Xibei Gongye Daxue Xuebao, 2021 The pump-jet propulsor(PJP) performances under various rotational speeds (20~50 r/s) are analyzed for further studying the influence of the Reynolds number (Re) on the hydrodynamics of PJP, before this, the calculation model is verified by using the ...
LI Fuzheng +3 more
doaj +1 more source
Numerical simulation of flow field in water-pump sump and inlet suction pipe [PDF]
, 2010 There are several important considerations in the design of a suction supply sump. It is imperative that the amount of turbulence and entrained air be kept to a minimum.
BOIS, Gérard +2 more
core +1 more source
Zhongguo Jianchuan Yanjiu, 2023 ObjectivesThe unsteady force of the rotor is the main excitation source of pump-jet shafting vibration, and rotor-stator interaction has an important impact on the characteristics of the unsteady force.
Wanghao TANG +3 more
doaj +1 more source
Fundamentals of Centrifugal Pump and System Interaction [PDF]
, 2011 Short CoursePumps are an integral part of your industry, yet engineers, operators, and maintenance technicians are seldom fully trained to handle the pump problems they encounter daily.
Volk, Michael, Volk, Mike
core +1 more source
Journal of Hydrodynamics, 2023 Abstract The tip-clearance flow in a pump-jet propulsor exerts great impacts on the fluctuating pressures and resultant unsteady forces, which are important sources of structural vibrations and radiated noise underwater. The blade geometry close to the tip is an important factor determining the vortex strength in the tip-clearance flow.
Xue-Qin Ji +3 more
openaire +1 more source
Influence of Spatially Varying Flow on the Dynamic Response of a Waterjet inside an SES
International Journal of Rotating Machinery, Volume 2014, Issue 1, 2014., 2014 Surface Effect Ships (SES) are a promising fuel‐efficient ship technology that typically carry most of their weight on an air cushion. To accommodate its shallow draft and slender side hulls and to absorb the high thrust and power required for high‐speed applications, waterjets are typically used as the primary propulsion system.
Michael R. Motley +3 more
wiley +1 more source
Modeling of Cavitating Flow through Waterjet Propulsors
International Journal of Rotating Machinery, Volume 2012, Issue 1, 2012., 2012 A computational‐fluid‐dynamics‐based modeling effort to capture flow through an axial flow waterjet propulsor is presented. The effort covered the waterjet flow over a wide range of flow coefficients and into cavitation‐driven breakdown. The computations are presented in cavitation at two values of flow coefficient through a series of decreasing ...
Jules W. Lindau +7 more
wiley +1 more source
Zhongguo Jianchuan YanjiuObjectiveComposite materials offer advantages such as low weight, corrosion resistance and a high damping ratio. To enhance the overall performance of underwater vehicles, this study investigates the characteristics of a composite rotor pump-jet ...
Bo LU +5 more
doaj +1 more source