Developing Tracer Particles for X-Ray Particle Tracking Velocimetry

Date
2011-07-01
Authors
Drake, Joshua
Kenney, Andrea
Morgan, Timothy
Heindel, Theodore
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Altmetrics
Authors
Research Projects
Organizational Units
Mechanical Engineering
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Abstract

X-ray imaging, as a noninvasive flow visualization technique, has been shown to be a useful method for observing and characterizing multiphase flows. One type of X-ray flow visualization technique, called X-ray Particle Tracking Velocimetry (XPTV), tracks an X-ray attenuating particle in an opaque fluid flow. A significant challenge with XPTV is identifying tracer particles with the desired fluid flow characteristics (e.g., small and neutrally buoyant) but yet differentially attenuate X-rays, which is based primarily on density differences. This paper describes the manufacturing of XPTV tracer particles that satisfy specific particle characteristics including high X-ray attenuation, uniform shape, specified effective density, and desired diameter. An example use of these particles as an intruder particle in a fluidized bed (to simulate biomass injection) is then demonstrated using X-ray stereographic imaging to determine intruder particle position as a function of time in a three-dimensional opaque system.

Description

This is a conference proceeding from ASME-JSME-KSME 2011 Joint Fluids Engineering Conference 1 (2011): 2685, doi:10.1115/AJK2011-11009. Posted with permission.

Keywords
imaging, particle tracking, tracer particles, x-ray flow visualization
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