A Study on the Effects of Wake Vortex to the Aero-Elastic Parameters of Downstream Square Prism

Jwo Hua Chen

doi:10.4028/www.scientific.net/AMR.671-674.893

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 671-674A Study on the Effects of Wake Vortex to the...

A Study on the Effects of Wake Vortex to the Aero-Elastic Parameters of Downstream Square Prism

Abstract:

A series of aero-elastic experiments were conducted to identify the aero-elastic parameters of 2-D square prisms under the interference effects of the tandem arranged upstream prism wake. The wake induced across-wind vibration of springs supported downstream prism was measured close to the lock-in wind speed in smooth flow. To identify the aero-elastic parameters, such as Y1,  and Y2, the trace-to-resonance method was adopted with the decay-to-resonance rules. It is well contributed to build up the predicting model of the aerodynamic loadings with the measured results of the vibration of prism under the wake interference effects with these parameters. With the aero-elastic parameters we collected in the various experiments cases, an empirical predicting model with the neural network predicting technique were constructed in this study. It is found that more clear trend of aero-elastic responses will be arose from this empirical model.

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Periodical:

Advanced Materials Research (Volumes 671-674)

Pages:

893-896

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.671-674.893

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Online since:

March 2013

Authors:

Jwo Hua Chen

Keywords:

2D Prism, Aero-Elastic Parameters Identification, Artificial Neural Network (ANN), Vortex-Induced Vibration (VIV), Wake Interference

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References

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