Results 21 to 30 of about 91,606 (298)
Dynamic response of deepwater test string under fluctuations in axial force and internal pressure
Scientific Reports, 2023 In this study, a mechanical model suitable for deepwater test string was proposed. An analysis of the dynamic response of the test string under different frequencies, different water depths and different fluctuation amplitudes was carried out by using ...
Qiaolei Sun +4 more
doaj +1 more source
Anomalous pressure in fluctuating shear flow [PDF]
Physical Review E, 2003 We investigate how the pressure in fluctuating shear flow depends on the shear rate $S$ and on the system size $L$ by studying fluctuating hydrodynamics under shear conditions. We derive anomalous forms of the pressure for two limiting values of the dimensionless parameter $λ=SL^2/ν$, where $ν$ is the kinematic viscosity.
Wada, Hirofumi, Sasa, Shin-ichi
openaire +3 more sources
Pressure fluctuation measurement in pressure vessels
IOP Conference Series: Earth and Environmental Science, 2022 Abstract Pressure vessels are mechanical devices that act as a reservoir of fluids at pressure more or less than atmospheric pressure. This research focuses on the application of the pressure vessel for hydraulic testing of hydro turbines to maintain uniform velocity profile and to suppress the pressure surge in the pipeline.
A Kapali +4 more
openaire +1 more source
Nonlinear and conventional biosignal analyses applied to tilt table test for evaluating autonomic nervous system and autoregulation [PDF]
, 2013 Copyright © Tseng et al.; Licensee Bentham Open. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0/) which permits unrestricted, non ...
Lin, Y-C +5 more
core +1 more source
Fluidization of Group B particles with a rotating distributor [PDF]
, 2008 A novel rotating distributor fluidized bed is presented. The distributor is a rotating perforated plate, with 1% open-area ratio. This work evaluates the performance of this new design, considering pressure drop, Δp, and quality of fluidization.
Sobrino Fernández, Celia +6 more
core +1 more source
Advances in Mechanical Engineering, 2017 The understanding of pressure fluctuation mechanism is the basis for stability and noise analysis in pumps. In this article, numerical study was carried out for the pressure fluctuation within the impeller and the guide vane of a low specific speed mixed-
Wenwu Zhang +3 more
doaj +1 more source
Study on the Characteristics and Formation Mechanism of Pressure Fluctuation in an Axial Flow Pump Based on Dynamic Mode Decomposition [PDF]
Journal of Applied Fluid MechanicsIn this study, aiming at investigating the formation mechanism of pressure fluctuations of different frequencies in axial flow pumps, the characteristics of pressure fluctuation were determined using fast Fourier transform (FFT) on the basis of a ...
Z. Y. Zhuang, H. H. Zhou, Z. Y. Yu
doaj +1 more source
Applied Sciences, 2020 This paper takes a pump-turbine as the research subject and, based on the Computational Fluid Dynamics (CFD) numerical method and combined with test data, investigates the pressure fluctuation characteristics in the pump mode and analyzes the pressure ...
Ping Huang +4 more
doaj +1 more source
A study on noise and pressure fluctuation in diffuser of compact centrifugal blower
Nihon Kikai Gakkai ronbunshu, 2016 Recently, it has become more important to develop vacuum cleaners which achieve both high suction power and low noise along with comfortable sound quality.
Takeshi HONDA +2 more
doaj +1 more source