Characterization of multiphase flow blind-T mixing using high speed gamma-ray tomometry

Autor: S.-A. Tjugum, B.T. Hjertaker, R Maad, Anders Hallanger
Rok vydání: 2018
Předmět:
Zdroj: Flow Measurement and Instrumentation. 62:205-212
ISSN: 0955-5986
DOI: 10.1016/j.flowmeasinst.2017.10.001
Popis: Most multiphase hydrocarbon flow instrumentation is flow regime dependent, i.e. the accuracy of the instrument will depend on the cross-sectional spatial distribution of the flow components. A common way to limit the influence of the flow regime dependency is to emulate homogeneous flow by installing a horizontal blind-T (blind-tee) flow obstruction just upstream of the vertically installed flow instrumentation. The objective of this research work has been to characterize the multiphase hydrocarbon flow mixing caused by a blind-T obstruction using a high speed gamma-ray tomograph developed at Department of Physics and Technology, University of Bergen. The effectiveness of the blind-T flow obstruction is crucial for securing the measurement accuracy of flow instrumentation. It is therefore of great interest to validate the effectiveness of the flow mixing caused by the blind-T as a function of vertical position. The experimental results obtained from the multiphase flow experiments conducted in the flow rig facility at Christian Michelsen Research AS, Bergen, Norway, demonstrates deviation from axis-symmetric gas/ liquid flow distribution just after the blind-T, in addition to an increasing degree of non-homogeneous cross-sectional flow distribution as a function of vertical position from the blind-T. The experimental data obtained using the high speed gamma-ray tomograph has been supported by CFD (Computational Fluid Dynamics) simulations of the blind-T mixing scenario.
Databáze: OpenAIRE
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