Results 1 to 10 of about 108,792 (260)
Research on the Hydrodynamic Noise Characteristics of a Mixed-Flow Pump
Journal of Marine Science and Engineering, 2023 This study presents a comprehensive investigation of the internal noise characteristics of a mixed-flow pump by combining computational fluid dynamics (CFD) and computational acoustics. The turbulent flow field of the pump is simulated using the unsteady
Leilei Ji, Weidong Shi
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Dynamic Characteristics of Rotating Stall in Mixed Flow Pump [PDF]
Journal of Applied Mathematics, 2013 Rotating stall, a phenomenon that causes flow instabilities and pressure hysteresis by propagating at some fraction of the impeller rotational speed, can occur in centrifugal impellers, mixed impellers, radial diffusers, or axial diffusers. Despite considerable efforts devoted to the study of rotating stall in pumps, the mechanics of this phenomenon ...
Xiaojun Li +4 more
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Large-Eddy Simulation of Unsteady Flow in a Mixed-Flow Pump [PDF]
The International Journal of Rotating Machinery, 2003 This article describes the large‐eddy simulation (LES) of the internal flows of a high–specific‐speed, mixed‐flow pump at low flow‐rate ratios over which measured head‐flow characteristics exhibit weak instability. In order to deal with a moving boundary interface in the flow field, a form of the finite‐element method in which overset grids are applied
Chisachi Kato +2 more
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Energies, 2017 The energy performance and radial force of a mixed flow pump with symmetrical and unsymmetrical tip clearance are investigated in this paper. As the tip clearance increases, the pump head and efficiency both decrease.
Lei Tan, Yabin Liu, Baoshan Zhu
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CFD Analysis of Cavitation Phenomena in Mixed-Flow Pump [PDF]
International Journal of Fluid Machinery and Systems, 2012 This paper deals with the CFD analysis of cavitating flow in the mixed-flow pump with the specific speed of 1.64 which suffers from a high level of noise and vibrations close to the optimal flow coefficient. The ANSYS CFX package has been used to solve URANS equations together with the Rayleigh-Plesset model and the SST-SAS turbulence model has been ...
Milan Sedlar +2 more
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Influence of Bionic Waveform Leading Edge Blade on Drag Reduction Characteristics of Mixed Pump [PDF]
Journal of Applied Fluid Mechanics, 2023 Because the helical axial flow gas-liquid mixing pump has the great advantage of conveying gas-liquid two-phase mixed medium, it has become the main core equipment for deep-sea oil and natural gas exploitation.
W. Han +6 more
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Frontiers in Energy Research, 2023 In this article, a typical mixed-flow pump was adopted as the research object to investigate the influence of the inlet structure within the impeller on the performance and internal flow patterns of the mixed-flow pump. First, three different blade inlet
Zhenggang Huo, Xiaoting Zha
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The Influence of a Pumping Chamber on Hydraulic Losses in a Mixed-Flow Pump [PDF]
Processes, 2022 In this study, entropy generation theory based on computational fluid dynamics (CFD) is used to study the influence of a pumping chamber type (guide vane and volute scheme) on the spatial distribution of hydraulic loss in a mixed-flow pump. The CFD data of the mixed-flow pump with a volute is validated by external characteristic test data under Q = 561.
Zhang, Huiyan +4 more
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Research on configuration and performance of water ramjet pressurized water intake system
Xibei Gongye Daxue Xuebao, 2023 Water ramjet is the most ideal power propulsion device for high-speed underwater weapons. However, failure to start it at low-speed makes it hard for the engine to be widely used.
YANG Hao +5 more
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A cavitation performance prediction method for pumps: Part2-sensitivity and accuracy
Nuclear Engineering and Technology, 2021 At present, in the case of pump fast optimization, there is a problem of rapid, accurate and effective prediction of cavitation performance. In “A Cavitation Performance Prediction Method for Pumps PART1 -Proposal and Feasibility” [1], a new cavitation ...
Long Yun +4 more
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