Particle Tracking Velocimetry Using Fast X-Ray Phase-Contrast Imaging
The authors demonstrate the use of millisecond x-ray phase-contrast imaging for velocity measurement of particle-laden flows in an optically opaque vessel. Taking advantage of particle size polydispersity, this single-particle tracking approach is extremely effective on flows with tracer particles exhibiting a great size distribution ranging from 1µm to hundreds of micrometers, which is impossible for visible-light-based techniques. Furthermore, a tomographic reconstruction was applied to yield the three-dimensional flowvelocity field and its particle size dependence with unprecedented sensitivity.
K. Im et al., "Particle Tracking Velocimetry Using Fast X-Ray Phase-Contrast Imaging," Applied Physics Letters, American Institute of Physics (AIP), Jan 2007.
The definitive version is available at http://dx.doi.org/10.1063/1.2711372
Mining and Nuclear Engineering
Keywords and Phrases
X-Ray Imaging; Flow Visualization; Velocimetry; Particle Velocity; X-Ray Optics
Article - Journal
© 2007 American Institute of Physics (AIP), All rights reserved.