Investigation of the specific mass flow rate distribution in pipes supplied with a pulsating flow

Olczyk, A.

doi:10.1016/j.ijheatfluidflow.2009.02.006

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…The amplitude frequency characteristics were estimated using the curve fitting function in Matlab software. Estimates were based on second-order inertial elements and provided quite a good representation of the acquired data [16].…”

Section: Experimental Test Rigmentioning

confidence: 99%

Experimental and Numerical Investigations of Pipeline with Resonator

Pałczyński

Kantyka

2019

Mechanics and Mechanical Engineering

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This article presents the current state of the art regarding the use resonators in straight pipes. There is considerable need to control and reduce pressure pulsation in pipelines supplied with pulsating flows. The use of a Helmholz resonator introduces an additional degree of freedom to the analysed dynamic system. Building on previous experimental investigations by the authors, which identified the nonlinear properties of straight pipes supplied with pulsating flows, this study describes an experimental test rig, measurement methods and mechanical analogies for one (1DOF) and two (2DOF) degrees of freedom. The results are presented in the form of a 3D map of amplitude-frequency characteristics, as a function of the resonator volume determined by piston height. The dynamic properties of the described system are presented as amplitude-phase characteristics, based on a comparison of the numerical and experimental results.

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Section: Experimental Test Rigmentioning

confidence: 99%

Experimental and Numerical Investigations of Pipeline with Resonator

Pałczyński

Kantyka

2019

Mechanics and Mechanical Engineering

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“…Pulsating flow in pipes has been observed in diverse technical areas such as physiology, roller and finger pumps, transportation of blood flow, oxygen, and sanitary fluids, among others [ 32 , 33 , 34 , 35 , 36 , 37 ]. Scientists have shown considerable interest in studying pulsating flow, especially focusing on accurate flow rate measurement, which is crucial for evaluating system performance [ 38 , 39 , 40 ]. Typically, flow rate determination involves multiplying physical quantities by correction factors corresponding to measurement technologies like turbine rotational frequency [ 40 ], pressure drops through an orifice [ 41 ], electromotive force [ 42 ], ultrasonic wave transit time, or Doppler effect [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

Flowing Liquid-Based Triboelectric Nanogenerator Performance Enhancement with Functionalized Polyvinylidene Fluoride Membrane for Self-Powered Pulsating Flow Sensing Application

Vu,

Nguyen,

Chung

et al. 2024

Polymers

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Pulsating flow, a common term in industrial and medical contexts, necessitates precise water flow measurement for evaluating hydrodynamic system performance. Addressing challenges in measurement technologies, particularly for pulsating flow, we propose a flowing liquid-based triboelectric nanogenerator (FL-TENG). To generate sufficient energy for a self-powered device, we employed a fluorinated functionalized technique on a polyvinylidene fluoride (PVDF) membrane to enhance the performance of FL-TENG. The results attained a maximum instantaneous power density of 50.6 µW/cm2, and the energy output proved adequate to illuminate 10 white LEDs. Regression analysis depicting the dependence of the output electrical signals on water flow revealed a strong linear relationship between the voltage and flow rate with high sensitivity. A high correlation coefficient R2 within the range from 0.951 to 0.998 indicates precise measurement accuracy for the proposed FL-TENG. Furthermore, the measured time interval between two voltage peaks precisely corresponds to the period of pulsating flow, demonstrating that the output voltage can effectively sense pulsating flow based on voltage and the time interval between two voltage peaks. This work highlights the utility of FL-TENG as a self-powered pulsating flow rate sensor.

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Hybrid Method for Researching Pulsating Flows in Pipes Exemplified with Orifice Application

Pałczyński

Rydlewicz²

2017

Applied Condition Monitoring

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Investigation of the specific mass flow rate distribution in pipes supplied with a pulsating flow

Cited by 6 publications

References 18 publications

Experimental and Numerical Investigations of Pipeline with Resonator

Experimental and Numerical Investigations of Pipeline with Resonator

Flowing Liquid-Based Triboelectric Nanogenerator Performance Enhancement with Functionalized Polyvinylidene Fluoride Membrane for Self-Powered Pulsating Flow Sensing Application

Hybrid Method for Researching Pulsating Flows in Pipes Exemplified with Orifice Application

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