A method for characterising solids translational and rotational motions using Multiple-Positron Emission Particle Tracking (Multiple-PEPT)

Yang, Zhiming; Fan, Xianfeng; Bakalis, Serafim; Parker, D.J.; Fryer, P.J.

doi:10.1016/j.ijmultiphaseflow.2008.06.002

Cited by 19 publications

(11 citation statements)

References 42 publications

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“…However, these techniques are restricted to use in systems with optical access. Yang et al have used a multi Positron Emission Particle Tracking technique to study the motion of 12 mm cubes in a rotating can. By embedding 3 markers in the cube the relative orientation could be determined.…”

Section: Introductionmentioning

confidence: 99%

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Determination and comparison of rotational velocity in a pseudo 2‐D fluidized bed using magnetic particle tracking and discrete particle modeling

et al. 2015

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Modeling of dense granular flow has been subject to a large amount of research. Particularly discrete particle modeling has been of great importance because of the ability to describe the strongly coupled dynamics of the fluid and the solids in dense suspensions. Many studies have been reported on the validation of the translational particle velocities predicted by using these models. The rotational motion however has received far less attention, mainly because of the spherical nature of the particles under investigation and the lack of techniques with the capability to study the rotational behavior of the solid phase. In this study, we will for the first time present experimental data on the rotational behavior of particles in a pseudo two‐dimensional fluidized bed setup using Magnetic Particle Tracking. In addition the experimental results are compared to data obtained from discrete particle simulations. © 2015 American Institute of Chemical Engineers AIChE J, 61: 3198–3207, 2015

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Section: Introductionmentioning

confidence: 99%

“…Unfortunately, the minimum relative distance between the tracers is limited to 5 mm. Yang et al have been able to determine translational and rotational motion of 12 mm cubes at 40 Hz with 6 mm standard deviation errors, with translation and rotational velocities up to 0.5 m/s and 50 rpm.…”

Section: Introductionmentioning

confidence: 99%

Determination and comparison of rotational velocity in a pseudo 2‐D fluidized bed using magnetic particle tracking and discrete particle modeling

et al. 2015

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“…The number of techniques that are capable of measuring rotation or orientation of particles however is limited. A multipositron emission particle tracking (multi‐PEPT) method was used to study the rotation of 12 mm cube particles . Zhang et al have used a combination of Infrared imaging and a microwave heater to study a single cylindrical tracer in a fluidized bed.…”

Section: Introductionmentioning

confidence: 99%

Magnetic particle tracking for nonspherical particles in a cylindrical fluidized bed

et al. 2017

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In granular flow operations, often particles are nonspherical. This has inspired a vast amount of research in understanding the behavior of these particles. Various models are being developed to study the hydrodynamics involving nonspherical particles. Experiments however are often limited to obtain data on the translational motion only. This paper focusses on the unique capability of Magnetic Particle Tracking to track the orientation of a marker in a full 3-D cylindrical fluidized bed. Stainless steel particles with the same volume and different aspect ratios are fluidized at a range of superficial gas velocities. Spherical and rod-like particles show distinctly different fluidization behavior. Also, the distribution of angles for rod-like particles changes with position in the fluidized bed as well as with the superficial velocity. Magnetic Particle Tracking shows its unique capability to study both spatial distribution and orientation of the particles allowing more in-depth validation of Discrete Particle Models.

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“…In particular, the rotational motion of particles may play a significant role for instance on the lift force exerted on them and then have an impact on their distribution . In systems where heat transfer is involved, the rotational motion of solid particles may change the rate of heating or cooling by increasing the interphase heat transfer coefficient . In addition, by tracking more than one particle at the same time, the effect of the spatial orientation of nonspherical particles when they hit the wall of a system or bubbles in a fluidized bed, as well as the relative motion of two freely moving particles, can be studied.…”

Section: Introductionmentioning

confidence: 99%

A multiple radioactive particle tracking technique to investigate particulate flows

2014

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Radioactive particle tracking is a nonintrusive technique that has been successfully used to study the flow dynamics in a wide range of reactors and blenders. However, it is still limited to the tracking of only one tracer at a time. A multiple radioactive particle tracking (MRPT) technique that can determine the trajectory of two free or restricted (attached to the same particle) moving tracers in a system is introduced. The accuracy (<5 mm) and precision (<5 mm) of the proposed technique is evaluated by tracking two stationary tracers and two moving tracers. The results confirm the reliability and validity of the MRPT technique when the two tracers have the same isotope and the distance between them is not too small (>2 cm). The tracking of two sticking tracers at the two ends of a cylindrical particle in a rotating drum is also considered to illustrate the potential of this characterization method.

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A method for characterising solids translational and rotational motions using Multiple-Positron Emission Particle Tracking (Multiple-PEPT)

Cited by 19 publications

References 42 publications

Determination and comparison of rotational velocity in a pseudo 2‐D fluidized bed using magnetic particle tracking and discrete particle modeling

Determination and comparison of rotational velocity in a pseudo 2‐D fluidized bed using magnetic particle tracking and discrete particle modeling

Magnetic particle tracking for nonspherical particles in a cylindrical fluidized bed

A multiple radioactive particle tracking technique to investigate particulate flows

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