Magnetic monitoring of a single particle in a prismatic spouted bed

Magnetic tracking of a fuel particle in a fluid-dynamically down-scaled fluidised bed

“…MPT has been applied to multiphase systems [49][50][51][52]. Using MPT, a tracer particle that fluid-dynamically resembles a fuel particle can be tracked in a 3-dimensional bed, yielding highly resolved information about the particle trajectory and rotation [52], and exhibiting better performance and wider scope than X-ray tomography at a much lower cost.…”

Investigations on the spouting stability in a prismatic spouted bed and apparatus optimization

“…to achieve a more intense (vigorous) spouting. Furthermore, the particle rotation is simultaneously increased to some extent, as found experimentally in [12] by means of magnet monitoring and by means of simulations with Discrete Particle Modelling (DPM) in [11,13]. However, regarding to the behaviour at increased gas velocities a negative property of this geometry was complained, namely a quickly growing flow instability, making the spouting stability highly dependent on the gas flow rate [10].…”

“…The previous experimental studies on hydrodynamics of this prismatic geometry comprehend the influence of the gas flow rate, solids' properties and inventory, as well as of the inlet size [10][11][12][13].…”

Magnetic tracer-particle tracking in a fluid dynamically down-scaled bubbling fluidized bed

“…This technique stems from medical applications and is described by Wang et al [28] and Richert et al [29] but has recently been applied to various fluidization applications [30][31][32][33]. Buist et al [30] conclude that, in a pseudo-2D bed, MPT provided less spatial resolution than PIV at a similar cost (but still significantly lower than the cost of radioactive tracking and X-ray based methods).…”

“…Another advantage by MPT is the possibility to use non-magnetic metallic powders as bed material, which is required when applying dynamic scaling to represent industrial scale fluidized beds operated at elevated temperatures. The present work combines 3D tracking with fluid dynamic scaling (which represents a step beyond the previous works [29][30][31][32][33]) to gain a better understanding of the complex flow patterns of solids inside fluidized beds. Thus, considering that commercial fluidized bed units for energy conversion operate at elevated temperatures, it is of high value to be able to perform experiments which can provide data with quantitative significance under ambient conditions using fluid dynamical scaling [34][35][36] as in the present work.…”