NMR imaging of turbulent structure in a transitional pipe flow
- 14 July 1990
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 23 (7) , 981-983
- https://doi.org/10.1088/0022-3727/23/7/038
Abstract
One-shot NMR imaging with a very short data acquisition time ( approximately 20 ms) is used to reveal the structure of a turbulent equilibrium puff in a transitional pipe flow. Longitudinal vortices in the downstream region of a puff are very clearly visualised in the NMR images. The structure of a puff derived from the images agrees with that suggested by a flow visualisation experiment done previously. The present study demonstrates that one-shot NMR imaging is a very powerful tool in visualising large-scale coherent structures in turbulent flow.Keywords
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