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Type: Artigo de periódico
Title: Wavespeed and volumetric fraction in core annular flow
Author: Bannwart, AC
Abstract: Kinematic wave theory is used to study the speed of interfacial waves observed in core annular flows of viscous oils with water. The theory; provides a method for measuring the volume fraction of the core. The results obtained by this method are in very good agreement with experimental data. The model also confirms the observation that for oils lighter than water waves move slower than the core in upward flow, faster than the core in downward flow and at the same velocity of the core in horizontal flow. A general correlation for the core fraction in wavy core annular flows at low annulus-to-core viscosity ratio is proposed. (C) 1998 Elsevier Science Ltd. All rights reserved.
Subject: oil-water flow
core annular flow
volumetric concentration
slip ratio
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0301-9322(98)00019-6
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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