Internal waves generated by a moving sphere and its wake in a stratified fluid

E. J. Hopfinger; J. B. Flor; J. M. Chomaz; P. Bonneton

doi:10.1007/BF00192753

Internal waves generated by a moving sphere and its wake in a stratified fluid

E. J. Hopfinger
, J. B. Flor
, J. M. Chomaz
, P. Bonneton

Research output: Contribution to journal › Article › peer-review

Abstract

The internal gravity waves and the turbulent wake of a sphere moving through stratified fluid were studied by the fluorescent dye technique. The Reynolds number Re=U·2a/v was kept nearly constant at about 3 · 10³ and the Froude number F;U/a N ranged from 0.5 to 12.5. It is observed that waves generated by the body are dominant only when F<4 and are replaced by waves generated by the large scale coherent structures of the wake when F>4.

Original language	English
Pages (from-to)	255-261
Number of pages	7
Journal	Experiments in Fluids
Volume	11
Issue number	4
DOIs	https://doi.org/10.1007/BF00192753
Publication status	Published - 1 Jul 1991
Externally published	Yes

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title = "Internal waves generated by a moving sphere and its wake in a stratified fluid",

abstract = "The internal gravity waves and the turbulent wake of a sphere moving through stratified fluid were studied by the fluorescent dye technique. The Reynolds number Re=U·2a/v was kept nearly constant at about 3 · 103 and the Froude number F;U/a N ranged from 0.5 to 12.5. It is observed that waves generated by the body are dominant only when F<4 and are replaced by waves generated by the large scale coherent structures of the wake when F>4.",

author = "Hopfinger, \{E. J.\} and Flor, \{J. B.\} and Chomaz, \{J. M.\} and P. Bonneton",

year = "1991",

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doi = "10.1007/BF00192753",

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journal = "Experiments in Fluids",

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AU - Hopfinger, E. J.

AU - Flor, J. B.

AU - Chomaz, J. M.

AU - Bonneton, P.

PY - 1991/7/1

Y1 - 1991/7/1

N2 - The internal gravity waves and the turbulent wake of a sphere moving through stratified fluid were studied by the fluorescent dye technique. The Reynolds number Re=U·2a/v was kept nearly constant at about 3 · 103 and the Froude number F;U/a N ranged from 0.5 to 12.5. It is observed that waves generated by the body are dominant only when F<4 and are replaced by waves generated by the large scale coherent structures of the wake when F>4.

AB - The internal gravity waves and the turbulent wake of a sphere moving through stratified fluid were studied by the fluorescent dye technique. The Reynolds number Re=U·2a/v was kept nearly constant at about 3 · 103 and the Froude number F;U/a N ranged from 0.5 to 12.5. It is observed that waves generated by the body are dominant only when F<4 and are replaced by waves generated by the large scale coherent structures of the wake when F>4.

U2 - 10.1007/BF00192753

DO - 10.1007/BF00192753

M3 - Article

AN - SCOPUS:0026187022

SN - 0723-4864

VL - 11

SP - 255

EP - 261

JO - Experiments in Fluids

JF - Experiments in Fluids

IS - 4

ER -

Internal waves generated by a moving sphere and its wake in a stratified fluid

Abstract

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