Quantitative measurement of solid fraction in a silo using SPRITE

Mehdizad, Maral; Fullard, Luke; Galvosas, Petrik; Holland, Daniel J.

doi:10.1016/j.jmr.2021.106935

Cited by 5 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As we have recently shown, the signal intensity in an MRI measurement is directly proportional to the solid fraction, provided the measurements are referenced to an appropriate internal standard and corrected for radiofrequency (r.f.) homogeneity using an appropriate reference image Iref [9]. To calibrate the measurements, the solid fraction was measured by filling the hoppers with a known mass of particles.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Quantitative MRI measurements of solid fraction during flow are challenging because the particles motion during imaging affects the measured signal intensity. Recently, we developed an advanced MRI method and demonstrated that the solid fraction of granular flows can be measured quantitatively with a precision of about 1% [9]. The purpose of this paper is to use the recently developed solid fraction measurement technique [9], in conjunction with quantitative velocity measurements, to characterize the solid fraction and velocity of granular flow through additively manufactured (3D-printed) hoppers.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we developed an advanced MRI method and demonstrated that the solid fraction of granular flows can be measured quantitatively with a precision of about 1% [9]. The purpose of this paper is to use the recently developed solid fraction measurement technique [9], in conjunction with quantitative velocity measurements, to characterize the solid fraction and velocity of granular flow through additively manufactured (3D-printed) hoppers. We demonstrate that the measurements are quantitative by calculating the mass flow rate from the MRI results and comparing this with gravimetric measurements.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative measurement of hopper flow using MRI

et al. 2021

Self Cite

View full text Add to dashboard Cite

To gain fundamental insight into granular flow behaviour, quantitative measurements of velocity and solid fraction are required. The aim of this study is to measure the solid fraction and velocity of 3D granular flows quantitively using a recently developed MRI method. Time-averaged spatial maps of the solid fraction and velocity are obtained for hoppers with wall angles of 30°, 60°, and 90°. From these maps, the mass flow rate of the material was calculated along the height of the hoppers. Excellent agreement was observed between the MRI and gravimetric mass flow rate measurements, confirming the quantitative nature of the measurements. The resulting solid fraction and velocity measurements provide insight into the dynamics of granular flow.

show abstract

Section: Experimental Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%