Results 101 to 110 of about 23,488 (225)

Numerical Investigation of Rotor and Stator Matching Mode on the Complex Flow Field and Pressure Pulsation of a Vaned Centrifugal Pump

Energies
The match of rotor and stator blades significantly affects the flow field structure and flow-induced pressure pulsation characteristics inside the pump.
Leilei Du, Fankun Zheng, Bo Gao, Mona Gad, Delin Li, Ning Zhang   +5 more
doaj   +1 more source

Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening

Renmin Zhujiang, 2023
In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-
REN Haibo, YU Bo, WANG Kui, WANG Luobin
doaj  

Pressure Pulsation Analysis of Oscillating Water Column Rotor Eccentricity Based on the Pulsation Tracking Network Method [PDF]

An oscillating water column (OWC) is typical of axial rotor turbines, which are used to convert ocean wave energy into electrical energy. This device impacts downstream pressure pulsations when its rotor becomes eccentric. This study compared the details
D. Zhu, Q. Liu, R. Xiao, R. Tao, Z. Lu, F. Jin, J. Lu   +6 more
core   +1 more source

Experimental investigation on the correlation of pressure pulsation and vibration of axial flow pump

Advances in Mechanical Engineering, 2019
Pressure and vibration displacement value are relatively measured by 14 pressure sensors and 2 vibration sensors distributing inside the tank-type model axial flow pump device under different flow rates.
Xiaohui Duan, Fangping Tang, Wenyong Duan, Wei Zhou, Lijian Shi   +4 more
doaj   +1 more source

Pulsation Control in Pressure Metering Systems

Journal of Low Frequency Noise, Vibration and Active Control, 1994
Reliable pressure measurement in pulsating flow conditions is difficult. When an orifice meter is used, two significant errors can arise: the square root error, which is inherent to orifice plates, and the pressure distortion generated in the sensing lines and DP transmitter.
openaire   +1 more source

Analysis of pressure pulsation mechanism and dynamic characteristics of axial piston pump

Journal of Measurement Science and Instrumentation, 2022
The pressure pulsation of axial piston pump is not only an important cause of rotation speed fluctuation, vibration noise and output stability of the hydraulic system, but also the main information source for obtaining fault information. Hydraulic system
ZHAO Baojian, GU Lichen, LIU Jiamin, GENG Baolong, SHI Yuan, WU Haoyu, YANG Sha   +6 more
doaj  

Pressure pulsations in power hydraulics systems

Mining Machines, 2020
The paper discusses the problem of pressure pulsation in hydraulic systems. The most important causes of pressure disturbances were discussed, such as: instability of the pump performance, variability of the system load and transient states related to the control of the system. The next part presents the threats caused by pressure fluctuations.
openaire   +1 more source

Cement Pulsation Treatment in Wells

, 2002
Cement pulsation is a novel technology for enhancing zonal isolation by applying low frequency, hydraulic, pressure pulses to the wellhead immediately after cementing.
Djuro Novakovic, Gahan, Brian, Ken R. Newman, Novakovic, Djuro, Dusterhoft, Dale, Chimmalgi, V. S., Dale Dusterhoft, Andrew K. Wojtanowicz, John Rogers Smith, Brian Gahan, Smith, John Rogers, V.S. Chimmalgi, Newman, Ken R., Wojtanowicz, Andrew K.   +13 more
core   +1 more source

Analysis of the temporal, spatial, and frequency law of the internal flow in a prototype vaned mixed‐flow pump

Energy Science & Engineering
Mixed‐flow pump is a typical pump using in low‐head cases of water lifting. The flow field pulsation is usually an important issue in the operation of mixed‐flow pumps and their pumping statins.
Chenhan Su, Jiahao Lu, Ran Tao, Di Zhu, Ruofu Xiao   +4 more
doaj   +1 more source

Investigation of flow-induced noise reduction in high-specific-speed centrifugal pumps using bionic blades

Scientific Reports
To reduce the flow-induced noise of centrifugal pumps and reveal the noise source characteristics inside the pumps, this paper designs a bionic blade based on the “tubercle effect” of humpback whales.
Yongxin Jin, Tao Cheng, Jie Fu, Guangtai Shi, Lei He   +4 more
doaj   +1 more source