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Research Papers: Fluid-Structure Interaction

Wind Effects on Dynamic Response of a Floating Roof in a Cylindrical Liquid Storage Tank

[+] Author and Article Information
Tetsuya Matsui

Department of Architecture, Meijo University, Nagoya 468-8502, Japanmatsuite@ccmfs.meijo-u.ac.jp

Yasushi Uematsu

New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan

Koji Kondo

 Kajima Technical Research Institute, Chofu 182-0036, Japan

Takuo Wakasa, Takashi Nagaya

Department of Architecture, Graduate School of Meijo University, Nagoya 468-8502, Japan

J. Pressure Vessel Technol 131(3), 031307 (Apr 28, 2009) (10 pages) doi:10.1115/1.3121538 History: Received May 02, 2008; Revised January 22, 2009; Published April 28, 2009

The dynamic response of a floating roof in a cylindrical liquid storage tank under wind loads is investigated analytically. Wind tunnel test in a turbulent flow is carried out to measure the wind pressure distributing over the roof surface. The measured data for the wind pressure is then utilized to predict the dynamic response of the floating roof, which is idealized herein as an isotropic elastic plate of uniform stiffness and mass. The dynamic interaction between the liquid and the floating roof is taken into account exactly in numerical sense within the framework of linear potential theory. The numerical results are presented, which illustrate the significant effect of wind loads on the dynamic response of liquid-floating-roof system in a storage tank.

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Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 11

Mean and maximum roof displacements

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Figure 13

Comparison between wind and earthquake responses (H=12.9 m)

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Figure 14

Comparison between wind and earthquake responses (H=22 m)

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Figure 12

Mean and maximum Mises’s stresses

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Figure 10

Fourier amplitude spectra of response at the windward edge (H=12.9 m)

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Figure 9

Fourier amplitude spectra of response at the center of roof (H=12.9 m)

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Figure 8

Time histories of response at the windward edge (H=12.9 m)

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Figure 7

Time histories of response at the center of roof (H=12.9 m)

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Figure 6

Mean and maximum wind pressure: (a) measured and (b) reproduced by the Fourier series (H=22 m)

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Figure 5

Mean and maximum wind pressure

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Figure 4

Power spectrum density of wind pressure at the center of roof (H=12.9 m)

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Figure 3

Time history of wind pressure at the center of roof (H=12.9 m)

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Figure 2

Arrangement of measuring points on floating roof

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Figure 1

Tank geometry and coordinate system

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