Results 21 to 30 of about 1,388,178 (317)

Behavior of axial thrust caused by intake sump vortices in a vertical mixed flow pump

Nihon Kikai Gakkai ronbunshu, 2017
Axial thrust forces acting on an impeller of a diffuser type mixed flow pump and the behavior of the axial thrust generated by the vortex occurrence in a pump intake sump were studied.
Yuji KANEMORI, Yasuo HANDA
doaj   +1 more source

Development of a One-Dimensional Model for the Prediction of Leakage Flows in Rotating Cavities Under Non-Uniform Tangential Pressure Distribution

International Journal of Turbomachinery, Propulsion and Power, 2019
Regenerative pumps are characterized by a low specific speed that place them between rotary positive displacement pumps and purely radial centrifugal pumps.
Giulio Cantini, Simone Salvadori, Massimiliano Insinna, Giorgio Peroni, Gilles Simon, Duccio Griffini, Raffaele Squarcini   +6 more
doaj   +1 more source

Performance prediction and experimental study of variable displacement vane oil pump

The Journal of Engineering, 2020
In order to fully predict the performance of variable displacement vane oil pump (VDVP) during concept design phase， one-dimensional simulation software AMESim is used to model the centralised parameters of VDVP.
Shang Hong He, Xiang Liu, Shixuan Xiao, Guangming Liu, Hao Cai   +4 more
doaj   +1 more source

Research on transient heat transfer of ball valves in high-pressure liquid hydrogen receiving stations

Results in Engineering, 2023
As one of the most important fluid control devices in the liquid hydrogen receiving station, the liquid hydrogen ball valve's performance directly affects the system's stability.
Shuxun Li, Mingxing Zheng, Yixue Wang, Lingxia Yang, Bohao Zhang, Jianzheng Zhang   +5 more
doaj   +1 more source

Sealing Structure Optimization Of LNG Ultra-Low Temperature And High-Pressure Axial Flow Check Valve

Journal of Applied Science and Engineering, 2022
To research the influence of high-speed collision between the valve core and valve seat on sealing performance in the closing process of check valve, the collision between the valve core and valve seat during the check valve closing process was ...
Shuxun Li, Wenyu Kang, Taiyu Liu, Lingxia Yang, YixueWang   +4 more
doaj   +1 more source

Study on the Cavitation Performances and Unsteady Characteristics of a Centrifugal Fire Pump [PDF]

Journal of Applied Fluid Mechanics
Centrifugal fire pumps are critical for firefighting systems but suffer from cavitation and instability under off-design conditions. However, systematic analyses of their flow-rate-dependent dynamics remain limited. This study systematically investigates
J. Hao, C. Yu, Y. Fu, P. Zhang, D. Hou, Y. Shen, J. Yuan   +6 more
doaj   +1 more source

Efficacy and Renal Safety of Dapagliflozin in Patients with Type 2 Diabetes Mellitus Also Receiving Metformin: A Real-Life Experience

Journal of Diabetes Research, 2018
Introduction. This study aimed at evaluating the efficacy and safety of dapagliflozin in patients with type 2 diabetes (T2D) who also received metformin in clinical practice in Italy. Methods.
Alessandro Scorsone, Gabriella Saura, Mattia Fleres, Lucia Spano, Vito Aiello, Davide Brancato, Anna Di Noto, Francesca Provenzano, Vincenzo Provenzano   +8 more
doaj   +1 more source

Study On Acoustic Characteristics Of Internal Leakage Of Micro-start Spring Safety Valve

Journal of Applied Science and Engineering, 2023
To investigate the noise radiation in the leakage of the safety valve. The acoustic fluid-solid coupling simulation analysis of the leakage process of the safety valve is used to study the flow field when the safety valve is leaking.
Shuxun Li, Xuedong Zhang, Yunxin Kang, Jianjun Hou, Jingwei Liu   +4 more
doaj   +1 more source

Research on Fault Diagnosis Method of Electro-Hydrostatic Actuator

Shock and Vibration, 2021
Electrohydrostatic actuator is a type of actuator that uses hydraulic energy as the energy transmission carrier, which has the advantages of small size and high power. Since it is commonly used in harsh conditions such as strong vibration, high pressure,
Lei Zhufeng, Qin Lvjun, Wu Xiaodong, Jin Wen, Wang Caixia   +4 more
doaj   +1 more source

Influence of diatom diversity on the ocean biological carbon pump

Nature Geoscience, 2017
Diatoms sustain the marine food web and contribute to the export of carbon from the surface ocean to depth. They account for about 40% of marine primary productivity and particulate carbon exported to depth as part of the biological pump.
P. Tréguer, C. Bowler, Brivaëla Moriceau, S. Dutkiewicz, M. Gehlen, O. Aumont, L. Bittner, R. Dugdale, Z. Finkel, D. Iudicone, O. Jahn, L. Guidi, M. Lasbleiz, K. Leblanc, M. Lévy, P. Pondaven   +15 more
semanticscholar   +1 more source