Campus Units

Mechanical Engineering, Chemical and Biological Engineering

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

2021

Journal or Book Title

Annual Review of Fluid Mechanics

Volume

53

First Page

543

Last Page

567

DOI

10.1146/annurev-fluid-010719-060201

Abstract

The use of X-ray flow visualization has brought a powerful new tool to the study of multiphase flows. Penetrating radiation can probe the spatial concentration of the different phases without the refraction, diffraction, or multiple scattering that usually produce image artifacts or reduce the signal-to-noise ratio below reliable values in optical visualization of multiphase flows; hence, X-ray visualization enables research into the three-dimensional (3D) structure of multiphase flows characterized by complex interfaces. With the commoditization of X-ray laboratory sources and wider access to synchrotron beam time for fluid mechanics, this novel imaging technique has shed light onto many multiphase flows of industrial and environmental interest under realistic 3D configurations and at realistic operating conditions (high Reynolds numbers and high volume fractions) that had defied study for decades. We present a broad survey of the most commonly studied multiphase flows (e.g., sprays, fluidized beds, bubble columns) in order to highlight the progress X-ray imaging has made in understanding the internal structure and multiphase coupling of these flows, and we discuss the potential of advanced tomography and time-resolved and particle tracking radiography for further study of multiphase flows.

Comments

This is a manuscript of an article published as Aliseda, Alberto, and Theodore J. Heindel. "X-Ray Flow Visualization in Multiphase Flows." Annual Review of Fluid Mechanics 53 (2020): 543-567 DOI: 10.1146/annurev-fluid-010719-060201. Posted with permission.

Copyright Owner

Annual Reviews

Language

en

File Format

application/pdf

Published Version

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