The suspension of a sphere in a turbulent jet

Samuel Davoust; Laurent Jacquin

doi:10.1615/tsfp6.1970

The suspension of a sphere in a turbulent jet

Samuel Davoust
, Laurent Jacquin

ONERA Office National d'Etudes et Recherches Aerospatiales

Research output: Contribution to conference › Paper › peer-review

Abstract

We present an experimental study of a sphere freely suspended in a vertical turbulent jet. The sphere undergoes horizontal and vertical oscillations. The evolution of the mean equilibrium position, amplitudes and frequencies of the oscillating motion are described and the governing parameters are identified. Experimental results are used to investigate the origin of the lift force that attracts the sphere toward the jet axis. Finally, the role of the jet’s turbulence on the system is considered. A model is proposed which links the amplitude of the sphere oscillations to external turbulent forcing.

Original language	English
Pages	1237-1242
Number of pages	6
DOIs	https://doi.org/10.1615/tsfp6.1970
Publication status	Published - 1 Jan 2009
Externally published	Yes
Event	6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009 - Seoul, Korea, Republic of Duration: 22 Jun 2009 → 24 Jun 2009

Conference

Conference	6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009
Country/Territory	Korea, Republic of
City	Seoul
Period	22/06/09 → 24/06/09

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10.1615/tsfp6.1970

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title = "The suspension of a sphere in a turbulent jet",

abstract = "We present an experimental study of a sphere freely suspended in a vertical turbulent jet. The sphere undergoes horizontal and vertical oscillations. The evolution of the mean equilibrium position, amplitudes and frequencies of the oscillating motion are described and the governing parameters are identified. Experimental results are used to investigate the origin of the lift force that attracts the sphere toward the jet axis. Finally, the role of the jet{\textquoteright}s turbulence on the system is considered. A model is proposed which links the amplitude of the sphere oscillations to external turbulent forcing.",

author = "Samuel Davoust and Laurent Jacquin",

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AU - Jacquin, Laurent

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AB - We present an experimental study of a sphere freely suspended in a vertical turbulent jet. The sphere undergoes horizontal and vertical oscillations. The evolution of the mean equilibrium position, amplitudes and frequencies of the oscillating motion are described and the governing parameters are identified. Experimental results are used to investigate the origin of the lift force that attracts the sphere toward the jet axis. Finally, the role of the jet’s turbulence on the system is considered. A model is proposed which links the amplitude of the sphere oscillations to external turbulent forcing.

U2 - 10.1615/tsfp6.1970

DO - 10.1615/tsfp6.1970

M3 - Paper

AN - SCOPUS:85029879938

SP - 1237

EP - 1242

T2 - 6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009

Y2 - 22 June 2009 through 24 June 2009

ER -

The suspension of a sphere in a turbulent jet

Abstract

Conference

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