Spatial coherence in the wake of a flat plate

José B. Dávila; Muhammad R. Hajj; Richard W. Miksad; Edward J. Powers

doi:10.1115/1.3101846

Spatial coherence in the wake of a flat plate

José B. Dávila, Muhammad R. Hajj, Richard W. Miksad, Edward J. Powers

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

Abstract

Spatial coherence of the streamwise velocity fluctuation was measured in the wake of a flat plate in a wind tunnel. The measurements were made in the context of determining the role of wavenumber resonance in quadratic interactions among resonant frequency modes. Frequency domain results show that sum-interaction modes targeted by coupled mode pairs are spatially coherent. This suggests that spatial coherence measurements can be combined with bispectral measurements to determine mode energy transit and direction.

Original language	English
Pages (from-to)	S36-S38
Journal	Applied Mechanics Reviews
Volume	50
Issue number	11
DOIs	https://doi.org/10.1115/1.3101846
State	Published - Nov 1997

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abstract = "Spatial coherence of the streamwise velocity fluctuation was measured in the wake of a flat plate in a wind tunnel. The measurements were made in the context of determining the role of wavenumber resonance in quadratic interactions among resonant frequency modes. Frequency domain results show that sum-interaction modes targeted by coupled mode pairs are spatially coherent. This suggests that spatial coherence measurements can be combined with bispectral measurements to determine mode energy transit and direction.",

author = "D{\'a}vila, \{Jos{\'e} B.\} and Hajj, \{Muhammad R.\} and Miksad, \{Richard W.\} and Powers, \{Edward J.\}",

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AU - Hajj, Muhammad R.

AU - Miksad, Richard W.

AU - Powers, Edward J.

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Y1 - 1997/11

N2 - Spatial coherence of the streamwise velocity fluctuation was measured in the wake of a flat plate in a wind tunnel. The measurements were made in the context of determining the role of wavenumber resonance in quadratic interactions among resonant frequency modes. Frequency domain results show that sum-interaction modes targeted by coupled mode pairs are spatially coherent. This suggests that spatial coherence measurements can be combined with bispectral measurements to determine mode energy transit and direction.

AB - Spatial coherence of the streamwise velocity fluctuation was measured in the wake of a flat plate in a wind tunnel. The measurements were made in the context of determining the role of wavenumber resonance in quadratic interactions among resonant frequency modes. Frequency domain results show that sum-interaction modes targeted by coupled mode pairs are spatially coherent. This suggests that spatial coherence measurements can be combined with bispectral measurements to determine mode energy transit and direction.

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JO - Applied Mechanics Reviews

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Spatial coherence in the wake of a flat plate

Abstract

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