Magnetic resonance velocimetry: applications of magnetic resonance imaging in the measurement of fluid motion

MRI Studies of the Hydrodynamics in a USP 4 Dissolution Testing Cell

“…Artefacts due to fluctuating flow are common and well understood in in vivo MRI studies of the heart and blood flow, and triggered acquisitions are therefore used in these applications. 67,68 The triggering technique has been successfully used in other MRI applications, such as the phase-resolved imaging of vibro-fluidised packed beds. 69,70 Images acquired in this study were phase resolved for 19 phases in a pump cycle of 528 ± 5 ms (equivalent to 114 ± 12 strokes/min), giving images 27.8 ± 0.3 ms apart in the pump cycle.…”

Quantifying the dynamics of flow within a permeable bed using time-resolved endoscopic particle imaging velocimetry (EPIV)

“…Hlushkou and Tallarek (2006) pointed out that 'the only experimental evidence of the presence of turbulence in a three-dimensional porous media is that of microscopic turbulence' (where 'microscopic' refers to the scale of the individual pore space) and emphasised that, strictly speaking, non-Darcian macro-scale phenomena, such as given by the pressure drop law, cannot identify the transition from one regime to another. In fact, it was not until the visualisation study of Dybbs and Edwards (1984) that the first evidence for eddy formation within the voids of porous media was provided.…”

Refractive-index and density matching in concentrated particle suspensions: a review

“…For instance, sophisticated tools such as Magnetic Resonance Imaging (MRI) are now increasingly used to visualize flow behavior inside a rheometer (Bonn et al 2008;Coussot et al 2003;Ovarlez et al 2006). The reader is referred to the review papers of Callaghan (1999), Elkins and Alley (2007) and Fukushima (1999) to get a better idea of the potential of MRI techniques in fluid mechanics. These wonderful techniques are, however, not free of problems.…”