Spatial mapping of velocity power spectra in Taylor-Couette flow using ultrafast NMR imaging
Open Access
- 7 March 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (10) , 1467-1470
- https://doi.org/10.1103/physrevlett.72.1467
Abstract
Ultrafast NMR imaging was used to clarify spatiotemporal structures of wavy Taylor-Couette flow. NMR images designed to give a radial velocity distribution in a cross-sectional plane containing the rotation axis were successively taken at 200 ms time intervals. Distributions of velocity power-spectral components were obtained by temporal Fourier transform of the sequential velocity images. The obtained spectral maps clearly visualized the spatial structures of the wavy components in the cross-sectional plane.Keywords
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