Effect of Orientation on Two-phase Slug Flow Induced Vibrations

Q3 Chemical Engineering

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences Pub Date : 2024-05-04 DOI:10.37934/arfmts.116.2.112

Huzaifa Azam, William Pao, Muhammad Sohail, Umair Khan

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引用次数: 0

Abstract

Multiphase flow induced vibrations is a serious safety issue in oil and gas industries due to its undesirable vibration. Currently, there is a lack of usable data that could help to predict the magnitude of multiphase flow induced vibration in pipe inclined at various angles. The objective of this paper is to determine the magnitude of vibration in two-phase flow in pipe at inclination angle of 0°, 30°, 45°, 60°, and 90°. Air to water superficial velocity ratio of 1.25 was selected for this purpose because it is the value that causes the flow to change abruptly from slug to churn flow and vice versa, depending on the orientation angle. The flow conduit is selected to be a stainless-steel pipe with an internal diameter of 52.5 mm (2 inches). The vibrations are monitored at the pipe section of length 38D from the inlet. Maximum longitudinal vibrations were observed in 0° orientation. 60° encountered the maximum amplitude vibrational frequency in transverse direction but being at a higher frequency. The suggested model can be used to evaluate the FSI impact of unstable vibrations for any piping orientation and diameter.

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方向对两相弹头流诱导振动的影响

多相流引起的振动是石油和天然气行业中一个严重的安全问题，因为它会产生不良振动。目前，缺乏可用数据来帮助预测以不同角度倾斜的管道中多相流引起的振动幅度。本文旨在确定倾斜角度为 0°、30°、45°、60° 和 90°的管道中两相流的振动幅度。之所以选择空气与水的表面速度比为 1.25，是因为该值会导致水流从蛞蝓流突然变为搅动流，反之亦然，具体取决于倾角。导流管选为内径 52.5 毫米（2 英寸）的不锈钢管。从入口处开始，在长度为 38D 的管段上对振动进行监测。在 0° 方向观察到最大纵向振动。在横向方向上，60°遇到最大振幅振动频率，但频率较高。建议的模型可用于评估任何管道方向和直径的不稳定振动对 FSI 的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

2.40

自引率

0.00%

发文量

176

期刊介绍： This journal welcomes high-quality original contributions on experimental, computational, and physical aspects of fluid mechanics and thermal sciences relevant to engineering or the environment, multiphase and microscale flows, microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.