Experimental Study of Flow Instabilities in a Hilly-Terrain Pipeline/Riser System

Journal article (2013)

Authors

R. Malekzadeh ChemE/Transport Phenomena - AS
R.A.W.M. Henkes Fluid Mechanics - Mechanical, Maritime and Materials Engineering
R.F. Mudde ChemE/Transport Phenomena - AS
Research Group
ChemE/Transport Phenomena (AS) (TU Delft)
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Published Date

2013

Language

English

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Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Transport Phenomena

Abstract

Abstract: Even at constant inlet and outlet boundary conditions (represented by gas and liquid mass flow rates and separator pressure, respectively), unsteady-state flow may occur in a pipeline/riser system operating at relatively low gas and liquid flow rates. The cyclic unsteady-state flow characterized by large-amplitude pressure and flow rate fluctuations has been referred to as severe slugging. This study is an experimental investigation of flow instabilities, especially severe slugging, in a relatively long hilly-terrain pipeline/riser system. Five types of flow regimes were found and characterized on the basis of visual observation and the measured pressure drop over the riser.