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Aerodynamic slot-control for 2D square prisms

Hangan, H. / Kim, J.

AbstractRecent research in fluid mechanics has indicated that the non-universality of growth rate parameters in bluff body wakes might be related to the base wake vortex dynamics. This aspect relates to possible aerodynamic control strategies for wind engineering applications. Herein a passive slot control technique is numerically (LES) investigated. It is shown that the slot flow penetrates in the near-wake region generating a Kelvin–Helmholtz-type instability that mitigates the vortex shedding formation. A more elongated wake bubble associates to drag reduction and the decrease in lateral pressure fluctuations reduces the fluctuating lift coefficient.

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Aerodynamic slot-control for 2D square prisms

Hangan, H. / Kim, J.

AbstractRecent research in fluid mechanics has indicated that the non-universality of growth rate parameters in bluff body wakes might be related to the base wake vortex dynamics. This aspect relates to possible aerodynamic control strategies for wind engineering applications. Herein a passive slot control technique is numerically (LES) investigated. It is shown that the slot flow penetrates in the near-wake region generating a Kelvin–Helmholtz-type instability that mitigates the vortex shedding formation. A more elongated wake bubble associates to drag reduction and the decrease in lateral pressure fluctuations reduces the fluctuating lift coefficient.

Aerodynamic slot-control for 2D square prisms

Hangan, H. / Kim, J.

AbstractRecent research in fluid mechanics has indicated that the non-universality of growth rate parameters in bluff body wakes might be related to the base wake vortex dynamics. This aspect relates to possible aerodynamic control strategies for wind engineering applications. Herein a passive slot control technique is numerically (LES) investigated. It is shown that the slot flow penetrates in the near-wake region generating a Kelvin–Helmholtz-type instability that mitigates the vortex shedding formation. A more elongated wake bubble associates to drag reduction and the decrease in lateral pressure fluctuations reduces the fluctuating lift coefficient.

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Titel:

Aerodynamic slot-control for 2D square prisms

Beteiligte:

Hangan, H. (Autor:in) / Kim, J. (Autor:in)

Erschienen in:

Journal of Wind Engineering and Industrial Aerodynamics ; 91 ; 1847-1857

Erscheinungsdatum:

01.01.2003

Format / Umfang:

11 pages

ISSN:

DOI:

https://doi.org/10.1016/j.jweia.2003.09.023

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Aerodynamic control , Bluff bodies , Large Eddy simulation

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