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Flow-Induced Vibration Analysis of Topside Piping at High Pressure

Flow-induced vibration (FIV) from high-velocity multiphase flow is a common source of vibration concern in process piping, potentially leading to fatigue failures and hydrocarbon leaks. A combination of computational fluid dynamics (CFD) and finite element (FE) modeling offers a potentially powerful tool for assessing and diagnosing multi­phase FIV problems in hydrocarbon-production piping systems.

Global energy consultancy Xodus Group performed FIV studies on an Equinor-operated topside production system, carrying multiphase flow at high-pressure (approximately 69 bara) conditions, where significant vibration was measured. The study assessed different vibration-simulation methodologies, combining FE analysis with forcing functions based on both correlations and CFD simulations. The aim was to gain a better understanding of the accuracy and limitations of calculation methods typically used to assess fatigue.

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Flow-Induced Vibration Analysis of Topside Piping at High Pressure

Paul R. Emmerson, Mike J. Lewis, and Neil A. Barton, Xodus Group Ltd., and Steinar Orre and Knud Lunde, Equinor

01 January 2021

Volume: 73 | Issue: 1

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