State curves and flipping for an orbiting cylinder at low Reynolds numbers

Baranyi, László (2009) State curves and flipping for an orbiting cylinder at low Reynolds numbers. In: IUTAM Symposium on Unsteady Separated Flows and their Control. IUTAM Bookseries (14). Springer Verlag, Dordrecht, pp. 111-122. ISBN 978-1-4020-9897-0

Preview

Text 1302868.pdf Download (472kB) | Preview

Abstract

Sudden changes found in the time-mean and rms values of forcecoefficients of a circular cylinder in forced orbital motion placed in a uniform stream when plotted against ellipticity of the orbital path suggest that two solutions(states) exist. This 2D numerical simulation was performed in order to gain furtherevidence of this hypothesis through flipping of the solution. Time histories and limit cycle curves of force coefficients for stationary, in-line, and orbital paths around the time of the flip were investigated, as well as time-mean and rms values of lift, drag, and base pressure coefficients versus ellipticity for the flipped solution. Results provide evidence of the existence of two solutions.

Actions (login required)

Edit Item