Vibrational signal processing for characterization of fluid flows in pipes

被引:21
作者
Dinardo, Giuseppe [1 ]
Fabbiano, Laura [1 ]
Vacca, Gaetano [1 ]
Lay-Ekuakille, Aime [2 ]
机构
[1] Politecn Bari Univ, Dept Mech Math & Management, I-70125 Bari, Italy
[2] Univ Salento, Dept Innovat Engn, I-73100 Lecce, Italy
关键词
Fluid flow measurements; Flowmeter; Vibration measurements; Laser Doppler Vibrometer; Vibration signal processing; Fast Fourier Transform; Root Mean Square value; Random signals; LEAK DETECTION;
D O I
10.1016/j.measurement.2017.06.040
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The main idea of this paper is to assess a simpler and faster procedure leading to the evaluation of the fluid flow rate through a pipe. Currently, several methods are available and they involve ad-hoc instruments. All these methods are characterized by high accuracies and dynamic responses, but they are intended to be inserted within the pipe under investigation, bringing to well-known insertion effects, compromising the reliability of the measurements performed. The authors illustrate a newer methodology for the measurement of flow rates by means of the processing of the vibration signals of pipe walls, inferred by the flow turbulence. Previous studies of the same authors showed a linear dependence between the amplitude of the most prominent peak of the vibration spectra and the flow rate. In this work, the authors relate the power content of the processed signals (by introducing the signal Root Mean Square value) to the flow rate. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:196 / 204
页数:9
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