Positron emission particle tracking in fluidized beds with secondary gas injection

Journal article
(Original article)


Publication Details

Author(s): Hensler T, Tupy M, Strer T, Pöschel T, Wirth KE
Journal: Powder Technology
Publication year: 2015
Volume: 279
Pages range: 113-122
ISSN: 0032-5910
eISSN: 1873-328X


Abstract


We apply positron emission particle tracking (PEPT) to a gas-solid fluidized bed with injection of a secondary gas through a centrally arranged nozzle and present a method to compute stationary fluid-dynamic characteristics of the system from the trajectories of a test particle. In order to evaluate this non-invasive method we compare the field of density obtained by PEPT with the density obtained by a traditional, well-established and approved, yet invasive, measurement technique to find good agreement. Besides the penetration depth of the jet region and the opening angle of the jet which are inferred from the density field, we use PEPT to measure quantities whose measurement using traditional methods is rather sophisticated, including the residence time of particles in the jet region and the suspended phase, the coefficients of axial and radial dispersion and the material flux across the jet boundaries. We conclude that PEPT is a reliable and at the same time versatile technique to measure stationary fluid-dynamic properties of dynamical particle systems at spatial resolution only limited by the duration of the measurement.



FAU Authors / FAU Editors

Hensler, Timo
Professur für Partikeltechnik
Pöschel, Thorsten Prof. Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems
Strer, Timo
Professur für Partikeltechnik
Tupy, Martin
Lehrstuhl für Multiscale Simulation of Particulate Systems
Wirth, Karl-Ernst Prof. Dr.-Ing.
Professur für Partikeltechnik


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


Research Fields

A1 Functional Particle Systems
Exzellenz-Cluster Engineering of Advanced Materials
A3 Multiscale Modeling and Simulation
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Hensler, T., Tupy, M., Strer, T., Pöschel, T., & Wirth, K.-E. (2015). Positron emission particle tracking in fluidized beds with secondary gas injection. Powder Technology, 279, 113-122. https://dx.doi.org/10.1016/j.powtec.2015.04.005

MLA:
Hensler, Timo, et al. "Positron emission particle tracking in fluidized beds with secondary gas injection." Powder Technology 279 (2015): 113-122.

BibTeX: 

Last updated on 2019-12-07 at 13:19

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