WIT Press


Vortex Shedding Observations Using Magnetic Resonance Imaging, Flow Visualisation And Computational Fluid Dynamics

Price

Free (open access)

Paper DOI

10.2495/CMEM990221

Volume

22

Pages

8

Published

1999

Size

829 kb

Author(s)

Y. Noguchi, I. Marzouqa, D.R. Hose, M.N.J. Paley I.D. Wilkinson, J.W. Fenner and P.D. Griffiths

Abstract

A study to investigate the use of MRI for unsteady flow measurements has been made. Conventional MRI flow studies can give images, which lead to an overestimation of the length of stenosis. This is due to the flow disturbed by the stenosis. However the authors believed that the flow downstream of a stenosis might be a periodic flow rather than fully turbulent flow. The flow with Karman vortex sheet is chosen to demonstrate the capability of MRI to capture periodic flows. The results are compared with flow visualisation experiments, Computational Fluid Dynamics and analytical results. They all agree well and

Keywords