Related Experiment Video
Updated: Aug 30, 2026

07:53
Micro-particle Image Velocimetry for Velocity Profile Measurements of Micro Blood Flows
Published on: April 25, 2013
Imaging the velocity profiles in tubeless siphon flow by NMR microscopy
1Department of Physics, Oakland University, 190 Science and Engineering Building, Rochester, MI 48309, USA. xia@oakland.edu
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|September 27, 2003
Abstract:
We report on the use of NMR micro-imaging to observe flow within a tubeless siphon. The flow is maintained in a visco-elastic liquid of high extensional viscosity, namely 0.5% w/v 8 million Dalton polyethylene oxide in water. The velocity profiles reveal a significant velocity gradient in the vertical direction as well as a transition from near-Poiseuille flow at the pipe entrance to plug flow far from the pipe entrance towards the base of the tubeless siphon.

