Results 11 to 20 of about 7,208 (162)
Capital flow waves—or ripples? Extreme capital flow movements since the crisis [PDF]
Journal of International Money and Finance, 2021 Abstract Has the occurrence of “extreme capital flow movements”—episodes of sudden surges, stops, flight and retrenchment—changed since the Global Financial Crisis (GFC)? And was the period at the outset of the Covid Crisis any different? This paper addresses these questions by updating and building on the dataset and methodology introduced in Forbes
Forbes, Kristin J, Warnock, Francis E
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One-Dimensional Fluid Dynamic Modeling of a Gas Bladder Hydraulic Damper for Pump Flow Pulsation
Energies, 2023 Positive displacement pumps produce pressure ripple that can be reduced with the attenuation of the generated flow ripple. This paper presents the application of a gas bladder hydraulic damper with the aim of reducing the oscillations of the delivery ...
Paolo Casoli +2 more
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Computational Investigation of Ripple Dynamics in Biofilms in Flowing Systems [PDF]
Biophysical Journal, 2018 Biofilms are collections of microorganisms that aggregate using a self-produced matrix of extracellular polymeric substance. It has been broadly demonstrated that many microbial infections in the body, including dental plaque, involve biofilms. While studying experimental models of biofilms relevant to mechanical removal of oral biofilms, distinct ...
Cogan, N.G. +3 more
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A Tandem Axial-Piston Unit Based Strategy for the Reduction of Noise Sources in Hydraulic Systems
Energies, 2020 This article presents a novel passive fluid borne noise source reduction strategy, based on tandem axial-piston unit indexing with the usage of symmetric lines.
Leandro Danes, Andrea Vacca
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Turbulent Shear Flow Over Large Martian Ripples
Journal of Geophysical Research: Planets, 2021 AbstractOn Mars, large aeolian ripples with wavelengths typically 1–3 m but lacking very coarse sand at crests have been encountered by rovers and observed from orbit. These bedforms have no terrestrial counterpart and several hypotheses for origins have been proposed.
Hezi Yizhaq +6 more
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Experimental study of flow intensity influence on 2-D sand ripple geometry characteristics
Water Science and Engineering, 2009 Sand ripples are common bedforms. The formation of sand ripples is related to flow conditions; different flow conditions cause different ripple geometries.
Xiang-dong Zhang, Li-mo Tang, Tian-yi Xu
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RIPPLE - A new model for incompressible flows with free surfaces [PDF]
Conference on Advanced SEI Technologies, 1991 Summary: A new free-surface flow model, RIPPLE, is summarized. RIPPLE obtains finite difference solutions for incompressible flow problems having significant surface tension forces at free surfaces of arbitrarily complex topology. The key innovation is the continuum surface force model, which represents surface tension as a localized volume force ...
Kothe, D.B., Mjolsness, R.C.
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Engineering Applications of Computational Fluid Mechanics, 2017 To improve its working performance, the flow ripple characteristics of an axial piston pump were investigated with software which uses computational fluid dynamics (CFD) technology.
Bin Zhang +4 more
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Full Conjugate Contour Constructing of Helical Rotor with Higher and Its Flow Ripple Formula
Jixie chuandong, 2021 To efficiently realize lightweight and low flow pulsation performance for helical rotor pump. Firstly， a new helical rotor with only three lobes and a full conjugate contour for higher shape factor is presented， then， from taking dimensionless ...
Taixi Quan, Yan Yang
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Low‐ripple high‐efficiency AC‐DC rectifier with auxiliary compensator for hydrogen production
IET Power Electronics, 2023 In hydrogen production, AC‐DC rectifiers must provide a high current and low voltage to the production load. This paper focuses on the efficient performance and elimination of the output ripple in these AC‐DC rectifiers.
Li Zhang +5 more
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