Results 11 to 20 of about 54,520 (298)

Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator

open access: yesApplied Sciences, 2023
Due to the development of aviation hydraulic systems towards high pressure and high flow, the frequency range of pressure pulsation becomes wider, and the amplitude of pulsation increases.
Shenghao Zhou   +6 more
doaj   +1 more source

Research on Pressure Pulsation Characteristics of Gerotor Pump for Active Vibration Damping System

open access: yesIEEE Access, 2019
High response, stable operation, small volume active vibration damping system and other intelligent hydraulic equipment have become the inevitable trend of future development.
Wenbin Cao   +4 more
doaj   +1 more source

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

open access: yesEnergy 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   +4 more
doaj   +1 more source

Pulsational frequency and amplitude modulation in the δ Sct star KIC 7106205 [PDF]

open access: yes, 2014
Analysis of the Kepler δ Sct star KIC 7106205 showed amplitude modulation in a single pressure mode, whilst all other pressure and gravity modes remained stable in amplitude and phase over the 1470 d length of the data set.
Bowman, Dominic, Kurtz, Donald Wayne
core   +2 more sources

Unsteady Pressure Pulsations in Pumps—A Review

open access: yesEnergies, 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   +4 more
doaj   +1 more source

Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller

open access: yesEnergies, 2023
For the centrifugal pump, the rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects the stability of systems and equipment.
Dan Ni   +5 more
doaj   +1 more source

Test and Numerical Simulation of Pressure Pulsation under the Forward and Reverse Working Conditions of a Horizontal Axial Flow Pump

open access: yesApplied Sciences, 2022
In daily operation, the flow state in the runner chamber of an axial flow pump is extremely complex, and the pressure pulsation caused by the vibration of the unit and the hydraulic excitation is also extremely complex.
Yalei Bai, Donglei Wu
doaj   +1 more source

Strange pulsation modes in luminous red giants [PDF]

open access: yes, 2014
We show that the spectrum of radial pulsation modes in luminous red giants consists of both normal modes and a second set of modes with periods similar to those of the normal modes.
Olivier, E. A., Wood, P. R.
core   +3 more sources

Experimental investigation of pressure pulsation induced by the floor-attached vortex in an axial flow pump

open access: yesAdvances in Mechanical Engineering, 2019
The pressure pulsation test in an axial flow pump with and without the floor-attached vortex was performed. Pressure sensors were mounted on the impeller inlet section and impeller outlet section and guide vane section outlet of the axial flow pump.
Xijie Song, Chao Liu
doaj   +1 more source

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

open access: yesEnergies, 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   +3 more
doaj   +1 more source

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