An investigation of film wavy structure in annular flow using two simultaneous LIF approaches

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Title: An investigation of film wavy structure in annular flow using two simultaneous LIF approaches
Authors: Cherdantsev, AV
An, J
Zadrazil, I
Markides, CN
Item Type: Conference Paper
Abstract: The paper is devoted to development and validation of film thickness measurement techniques in interfacial gas-liquid flows. The specific flow investigated here is that of downwards (co-flowing) annular flow in a vertical pipe, however, many of the observations and findings are transferable to similar flow geometries. Two advanced spatially resolved techniques, namely planar laser-induced fluorescence and brightness-based laser-induced fluorescence , are used simultaneously in the same area of interrogation. A single laser sheet is used to excite fluorescence along one longitudinal section of the pipe, and two cameras (one for each method) are placed at different angles to the plane of the laser sheet in order to independently recover the shape of the interface along this section. This allows us to perform a cross-validation of the two techniques and to analyse their respective characteristics, advantages and shortcomings.
Issue Date: 11-Jul-2016
Date of Acceptance: 17-Apr-2016
URI: http://hdl.handle.net/10044/1/39058
Copyright Statement: © 2016 HEFAT
Sponsor/Funder: Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/K003976/1
Conference Name: 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
Publication Status: Accepted
Start Date: 2016-07-11
Finish Date: 2016-07-13
Conference Place: Malaga, Spain
Appears in Collections:Faculty of Engineering
Chemical Engineering



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