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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Dipole
Vortex
Collision
Vertical
vortices
dipoles
Fluid
collisions
fluids
Horizontal
vertical motion
Secondary Flow
secondary flow
Motion
particle image velocimetry
Kinetic energy
Interaction
Discrepancy
Turbulence
kinetic energy

Cite this

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title = "Dipole-wall collision in a shallow fluid",
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.",
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Dipole-wall collision in a shallow fluid. / Cieslik, A.R.; Akkermans, R.A.D.; Kamp, L.P.J.; Clercx, H.J.H.; Heijst, van, G.J.F.

In: European Journal of Mechanics. B, Fluids, Vol. 28, No. 3, 2009, p. 397-404.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Dipole-wall collision in a shallow fluid

AU - Cieslik, A.R.

AU - Akkermans, R.A.D.

AU - Kamp, L.P.J.

AU - Clercx, H.J.H.

AU - Heijst, van, G.J.F.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

U2 - 10.1016/j.euromechflu.2008.10.002

DO - 10.1016/j.euromechflu.2008.10.002

M3 - Article

VL - 28

SP - 397

EP - 404

JO - European Journal of Mechanics. B, Fluids

JF - European Journal of Mechanics. B, Fluids

SN - 0997-7546

IS - 3

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