Flow Ripple Reduction in Reciprocating Pumps by Multi-Phase Rectification [PDF]
Sensors, 2023 Reciprocating piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as organs-on-chips (OoC). However, achieving a steady flow when using these micropumps is a significant challenge because of flow ripples ...
Gürhan Özkayar +4 more
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Numerical simulation and experimental evaluation of flow ripple characteristics of Truninger pump [PDF]
Scientific Reports, 2022 Compared with involute internal gear pumps and gerotor pumps, lower flow ripple is the main advantage of Truninger pumps. Understanding the flow ripple mechanism and characteristics is of great significance to guide the design and manufacture of this ...
Yundong Liang, Zongbin Chen, Jian Liao
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Theoretical Analysis of Active Flow Ripple Control in Positive Displacement Pumps
Energies, 2022 Positive displacement machines present a well-known major drawback that is the oscillation in delivered flow rate. This paper presents two active solutions for reducing the flow ripple generated by a pump with an external device actuated by means of a ...
Paolo Casoli +3 more
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Experimental Measurement and Numerical Validation of the Flow Ripple in Internal Gear Pumps
Energies, 2022 The flow ripple in an internal gear pump was measured by means of a new instantaneous high-pressure flowmeter. The flowmeter consists of two pressure sensors mounted on a piece of the straight steel pump delivery line, and a variable-diameter orifice was
Alessandro Ferrari +4 more
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Theoretical Analysis for the Flow Ripple of a Tandem Crescent Pump with Index Angles
Applied Sciences, 2017 This paper presents a theoretical approach for lowering the outlet flow ripple of a crescent pump by applying a tandem crescent pump consisting of two gear pairs with an index angle between them.
Hua Zhou +3 more
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A Numerical Analysis of an Innovative Flow Ripple Reduction Method for External Gear Pumps
Energies, 2021 In this paper, an innovative solution to minimize noise emission, acting on the flow ripple, in a prototype External Gear Pump (EGP) is presented. Firstly, a new tool capable to completely simulate this pump’s typologies, called EgeMATor, is presented ...
Gianluca Marinaro +2 more
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T-RippleGNN: Predicting traffic flow through ripple propagation with attentive graph neural networks. [PDF]
PLoS ONERecently, accurate traffic flow prediction has become a significant part of intelligent transportation systems, which can not only satisfy citizens' travel need and life satisfaction, but also benefit urban traffic management and control.
Anning Ji, Xintao Ma
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Numerical Study on Improved Geometry of Outlet Pressure Ripple in Parallel 2D Piston Pumps
Aerospace, 2022 Because the axial piston pump is often used in the aerospace and aviation fields, it is necessary to pay attention to its outlet pressure and flow characteristics.
Yu Huang +5 more
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Machines, 2023 Positive displacement pumps are widely employed for their characteristics, but the pulsating flow they produce is a major and well-known drawback. To reduce the flow ripple produced by the pump, which in turn generates a pressure ripple, many methods ...
Paolo Casoli +2 more
doaj +1 more source
Effect of a ripple current on the efficiency of a PEM electrolyser
Results in Engineering, 2021 The aim of this study was to determine how the efficiency of a proton exchange membrane (PEM) electrolyser is affected by an electric ripple current and the different characteristics of the ripple current (frequency, amplitude and waveform).
Henning P.C. Buitendach +4 more
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