Results 11 to 20 of about 3,051 (232)
Study on the influence of inducer and its guide vanes on cryogenic cavitation and pressure fluctuation characteristics of an LNG pump [PDF]
Scientific ReportsLiquefied natural gas (LNG) pumps are prone to cavitation under cryogenic operation. This study establishes a numerical model to investigate the influence of an inducer and its guide vanes on the cavitation and pressure fluctuation characteristics of a ...
Xiaobao Zhang +5 more
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Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2022 The use of a pump as opposed to a turbine/pump as turbine (PAT) for off-grid electrification applications is one of the important ways to be considered in efforts to equalize electrical energy in Indonesia.
Sarid Mejiartono +2 more
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Investigating the Cavitation and Pressure Fluctuation Characteristics of a Cryogenic Inducer under Gas Phase Decomposition Operating Conditions [PDF]
Journal of Applied Fluid MechanicsThe cavitation properties and pressure pulsation behaviour of a cryogenic inducer under incipient gas precipitation conditions were systematically examined in this work.
C. Yuhao +5 more
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Investigations on static and dynamic properties of liquid annular seals by a new transient numerical method with circular whirl model [PDF]
AIP AdvancesAnnular seals are employed in centrifugal pumps to inhibit leakage for reducing the effect of leaking fluid on the main flow. However, the seals generate fluid excitation forces while controlling the leakage flow, which seriously compromises the ...
Fengqin Li +6 more
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Applied Sciences, 2022 The vibration characteristics induced by radial hydraulic force on the fire turbopump have been investigated by numerical simulations in this paper. The numerical model was validated with corresponding experimental measurements.
Ye Yuan, Rong Jin, Lingdi Tang
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Energies, 2022 The heat pump system has been widely used in residential and commercial applications due to its attractive advantages of high energy efficiency, reliability, and environmental impact.
Abbas Aghagoli +2 more
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The acceleration effect of pump as turbine system during starting period
Scientific Reports, 2023 In order to reveal the influence of starting acceleration on starting process of a pump as turbine system, this paper carries out a numerical calculation of the three-dimensional viscous unsteady flow of pump as turbine circulating piping system under ...
Yu-Liang Zhang, Jin-Fu Li, Zu-Chao Zhu
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Internal Flow Phenomena of Two-Way Contra-Rotating Axial Flow Pump-Turbine in Pump Mode under Variable Speed [PDF]
Journal of Applied Fluid Mechanics, 2022 This paper investigated the variable speed operation of a two-way contra-rotating axial flow pump–turbine in pump mode. When counter-rotating impellers operate at the same speed, a significant difference exists in the shaft power of the two impellers ...
C. An +5 more
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Pump-Turbines in Conventional Hydropower Plants
IOP Conference Series: Earth and Environmental Science, 2021 Abstract This paper proposes an innovative approach to retrofit existing hydropower plants with suitable upper and lower reservoirs into pumped storage. The conventional methods are both comprehensive and expensive, mainly due to the increased risk of cavitation during pumping operation.
Helene Njølstad Dagsvik +1 more
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Hydrodynamic and experimental characterization of pumps as turbines
Dyna, 2023 To estimate the performance, efficacy, modes of operation, hydrodynamic instabilities, and methodologies for harnessing energy from the pump as turbine (PAT), it is necessary to characterize these hydraulic turbomachines in all their modes of operation ...
Daniel Felipe Tobón-Espinosa +3 more
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