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A Potential-Integral-Index Algorithm for Analyzing the Pressure Fluctuations of Gas Flows in Complex Pipelines
Theoretical Foundations of Chemical Engineering ( IF 0.8 ) Pub Date : 2021-01-15 , DOI: 10.1134/s0040579520060056
R. R. Kantyukov , V. P. Meshalkin , O. B. Butusov

Abstract

A potential-integral-index algorithm for analyzing the pressure fluctuations of gas flows in complex pipelines is proposed. Pressure fluctuations characterize the turbulent structure of gas flows, which exert shock effects on the walls of pipelines, which is one of the most important causes of a dangerous mechanical phenomenon—vibration, leading to the mechanical destruction of the pipeline. At each point in the gas flow, ordered sequences of pressure fluctuations form time series, which can be analyzed using the statistical method of a one-dimensional and two-dimensional time sweep of pressure fluctuations formed when the size of the sliding window, covering different regions of stochastic pulsations, changes. It is shown that the proposed algorithm allows one to find the singular points of the time series that are not detected using the traditional continuous wavelet transform, which plays an important role in assessing the dynamic stochastic structure of pressure fluctuations in pipeline flows.



中文翻译:

潜在积分指数算法,用于分析复杂管道中气流的压力波动

摘要

提出了一种用于分析复杂管道中气体压力波动的电位-积分指标算法。压力波动是气流的湍流结构的特征,该湍流结构在管道壁上施加冲击作用,这是危险的机械现象(振动)的最重要原因之一,振动会导致管道的机械破坏。在气流的每个点处,压力波动的有序序列形成时间序列,可以使用统计方法进行分析,该统计方法是当滑动窗口的大小(覆盖不同)时形成的压力波动的一维和二维时间扫描随机脉动,变化的区域。

更新日期:2021-01-15
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