Dipole-wall collision in a shallow fluid

A.R. Cieslik, R.A.D. Akkermans, L.P.J. Kamp, H.J.H. Clercx, G.J.F. Heijst, van

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)

Abstract

Recent experiments on a freely evolving dipolar vortex in a homogeneous shallow fluid layer have clearly shown the importance of vertical secondary flows on top of the primary horizontal motion. The present contribution focuses on the interaction of such a dipolar vortex with a sidewall. Accurate measurements of the three velocity components in a single horizontal plane have been performed using the Stereoscopic Particle Image Velocimetry (SPIV) technique. The experimental results, supported by numerical simulations, indicate that the complex vertical structure of a shallow-layer dipole becomes even more complex during the collision process. The observed growth of the kinetic energy associated with enhanced vertical motion pinpoints the strong discrepancies between vortex-wall interactions in shallow fluid layers and in purely two-dimensional wall-bounded turbulence.
Original languageEnglish
Pages (from-to)397-404
JournalEuropean Journal of Mechanics. B, Fluids
Volume28
Issue number3
DOIs
Publication statusPublished - 2009

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