Results 21 to 30 of about 2,480,861 (247)

Influence of Solid-Liquid Two-Phase Flow on Pressure Pulsation Characteristics in Axial Flow Pump Unit

Renmin Zhujiang
Based on Euler multiphase model, RNG k-ε turbulence model, and SIMPLEC algorithm, a numerical simulation of solid-liquid two-phase flow in an axial flow pump was carried out to study the pressure fluctuation characteristics of the axial flow pump when ...
GUO Chu, WANG Danna, ZHANG Tao, WU Yue, ZHENG Yuan   +4 more
doaj   +3 more sources

Comparison of pressure pulsation amplitude and pulsation rate under different test conditions.

, 2022
Comparison of pressure pulsation amplitude and pulsation rate under different test conditions.
Hongqiang Chai (13170571), Guoguo Wu (13170577), Chuanchuan Cao (13170583), Guolai Yang (13170574), Guixiang Bai (13170580)   +4 more
core   +1 more source

Influence of blade trailing edge profile on unsteady pressure pulsations in a multistage centrifugal pump

Energy Science & Engineering, 2023
Changing the shape of the blade trailing edge profile of a centrifugal pump is one of the effective means to improve the internal unsteady flow and pressure pulsation of a centrifugal pump.
Bao‐Ling Cui, Fu‐You Sun, Yu‐Liang Zhang, Jin‐Xin Liu, Jun‐Jian Xiao   +4 more
doaj   +1 more source

Stability Analysis of Vaneless Space in High-Head Pump-Turbine under Turbine Mode: Computational Fluid Dynamics Simulation and Particle Imaging Velocimetry Measurement

Machines, 2022
When the Francis-type reversible pump-turbine runs under partial load, the pressure pulsation amplitude and frequency in vaneless space are high, posing a serious threat to the stability of unit operation.
Wanquan Deng, Lianchen Xu, Zhen Li, Wen Tang, Xiaolong Wang, Linmin Shang, Demin Liu, Xiaobing Liu   +7 more
doaj   +1 more source

Orthogonal test analysis table of pressure pulsation.

, 2022
Orthogonal test analysis table of pressure pulsation.
Hongqiang Chai (13170571), Guoguo Wu (13170577), Chuanchuan Cao (13170583), Guolai Yang (13170574), Guixiang Bai (13170580)   +4 more
core   +1 more source

Unsteady Pressure Pulsations in Pumps—A Review

Energies, 2022
Unsteady pressure-pulsation-induced severe vibration and high alternating stress can cause some unexpected results, including impeller crack and structural damage of the entire pumping system.
Ning Zhang, Delin Li, Bo Gao, Dan Ni, Zhong Li   +4 more
doaj   +1 more source

Intraocular Pressure Reduction Is Associated with Reduced Venous Pulsation Pressure. [PDF]

, 2016
PURPOSE:To explore whether alterations in intraocular pressure (IOP) affect vein pulsation properties using ophthalmodynamometric measures of vein pulsation pressure.
Dao-Yi Yu, Yu, Dao-Yi, Viswanathan, Ananth, William H Morgan, Morgan, William H., Betz-Stablein, Brigid D., Chauhan, Balwantray C., Ananth Viswanathan, Philip H House, Hazelton, Martin L., Balwantray C Chauhan, House, Philip H., Brigid D Betz-Stablein, Martin L Hazelton   +13 more
core   +1 more source

Pressure Analysis in the Draft Tube of a Pump-Turbine under Steady and Transient Conditions

Energies, 2021
Pumped-storage power stations play a regulatory role in the power grid through frequent transition processes. The pressure pulsation in the draft tube of the pump-turbine under transient processes is important for safe operation, which is more intense ...
Jing Yang, Yue Lv, Dianhai Liu, Zhengwei Wang   +3 more
doaj   +1 more source

Gas Pulsations: A Shock Tube Mechanism [PDF]

, 2012
Gas pulsations are defined presently as a macro flow rate and/or pressure fluctuation with relatively low frequency and high amplitude. They commonly exist in HVACR, energy and other processing industries, and are widely accepted to be mainly caused by ...
Huang, Paul Xiubao
core   +1 more source

Effect of the Gap Matching Relation on the Pressure Pulsation Characteristics at Blade’s Surface of the Multiphase Pump

Machines, 2022
The pressure pulsation characteristics of the blade’s surface have an impact on the lifespan of the multiphase pump impeller. To explore the influence of the gap matching relation on the pressure pulsation characteristics at blade’s surface of the pump ...
Guangtai Shi, Zheyu Zhu, Binxin Wang, Haigang Wen   +3 more
doaj   +1 more source