Chapter 4: Nonhomogeneous Multiphase Flow in Pipelines
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Published:2017
"Nonhomogeneous Multiphase Flow in Pipelines", Applied Multiphase Flow in Pipes and Flow Assurance: Oil and Gas Production, Eissa M. Al-Safran, James P. Brill
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Perhaps the most distinguishing aspect of multiphase flow is the variation in the physical distribution of the phases in the conduit, resulting in a nonhomogeneous flow. Nonhomogeneous multiphase flow is a complex flow behavior when compared with homogeneous flow. To characterize a nonhomogeneous flow and eventually calculate its hydrodynamic parameters, a careful analysis of flow internal forces is required. In this chapter, a simple and basic approach is followed to present the complex phenomenon of nonhomogeneous multiphase flow in pipes, starting with basic definitions and an overall description of two calculation approaches: empirical correlations and simplified modeling. Flow pattern conceptual physical descriptions and simplified prediction methodology will be presented next. Finally, the prediction of slip liquid holdup and pressure gradient calculations using both calculation approaches are discussed.
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