Commissioning of an MRI test facility for CFD-grade flow experiments in replicas of nuclear fuel assemblies and other reactor components

Characterization of unsteady flow in a 3D‐printed Schwarz Diamond monolith using magnetic resonance velocimetry

“…26 In addition to steady flow, MRI can measure velocity fluctuations caused by time-varying flow for applications ranging from biomedicine 27 to industry. 28 Because the velocity variance is the result of a Reynolds decomposition of velocity into mean and fluctuating components, MRI measurements lend themselves well to comparison with Reynolds-averaged quantities that describe turbulent flow, such as turbulent kinetic energy (TKE). 29 For gas flow through a microporous square channel monolith, 30 it was found that turbulence existed at the ends of the monolith that was not predicted by numerical simulations.…”

“…This orderly flow pattern suppressed the channeling phenomenon observed in random porous structures 26 . In addition to steady flow, MRI can measure velocity fluctuations caused by time‐varying flow for applications ranging from biomedicine 27 to industry 28 . Because the velocity variance is the result of a Reynolds decomposition of velocity into mean and fluctuating components, MRI measurements lend themselves well to comparison with Reynolds‐averaged quantities that describe turbulent flow, such as turbulent kinetic energy (TKE) 29 .…”