The Interaction Between Steep Waves and a Vertical, Surface-Piercing Column

Rizwan Sheikh; Chris Swan

doi:10.1115/1.1854701

Journal of Offshore Mechanics and Arctic Engineering | Volume 127 | Issue 1 | Article

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The Interaction Between Steep Waves and a Vertical, Surface-Piercing Column

Rizwan Sheikh and Chris Swan

[+] Author and Article Information

Rizwan Sheikh

Noble Denton Europe, Ltd, Noble House, 39 Tabernacle Street, London, EC2A 4AAe-mail: rsheikh@nodent.co.uk

Chris Swan

Department of Civil & Environmental Engineering, Imperial College London, South Kensington, London, SW7 2AZe-mail: c.swan@imperial.ac.uk

J. Offshore Mech. Arct. Eng 127(1), 31-38 (Mar 23, 2005) (8 pages) doi:10.1115/1.1854701 History: Received August 18, 2003; Revised September 19, 2004; Online March 23, 2005

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Inverted still images showing Type 1 wave scattering. Incident waves approach from the bottom of figure and dashed black lines highlight their phase. The time difference between the slides is, Δt=0.08 s.

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Still images showing Type 2 scattered wave. Incident waves approach from the top of figure and dashed white lines highlight their phase. The time difference between the slides is, Δt=0.08 s.

View Large | Save Figure | Download Slide (.ppt)

Spatial profiles of Type 1 wave scattering. Data corresponds to θ=0 deg radii. The arrows indicate position of scattered wave. In each figure the phase, Φ, of incident wave cycle in radians is: (a) Φ≈0 (crest at location of cylinder center) (b) Φ≈0.5 (c) Φ≈1.1 (d) Φ≈1.7.

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Spatial profiles of Type 2 wave scattering. Data corresponds to θ=0 deg radii. The arrows indicate position of scattered wave. In each figure the phase, Φ, of incident wave cycle in radians is: (a) Φ≈π (trough at location of cylinder center) (b) Φ≈3.3 (c) Φ≈3.9 (d) Φ≈4.5.

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3D contour plots of data recorded along θ=0° radius: (a) Incident wave, (b) scattered waves

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Temporal profiles recorded at r=D/2 (cylinder surface) for: (a) θ=0 dedg, (b) θ=90 deg, and (c) θ=180 deg

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Nonlinear wave interaction due to the constructive interference of incident and scattered waves: (a) Inverted still image, (b) Experimental data

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Wave probe locations for Stage 2 of the measuring program

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Sheikh R, Swan C. The Interaction Between Steep Waves and a Vertical, Surface-Piercing Column. ASME. J. Offshore Mech. Arct. Eng. 2005;127(1):31-38. doi:10.1115/1.1854701.

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The Interaction Between Steep Waves and a Vertical, Surface-Piercing Column

References

Figures

Inverted still images showing Type 1 wave scattering. Incident waves approach from the bottom of figure and dashed black lines highlight their phase. The time difference between the slides is, Δt=0.08 s.

Still images showing Type 2 scattered wave. Incident waves approach from the top of figure and dashed white lines highlight their phase. The time difference between the slides is, Δt=0.08 s.

Spatial profiles of Type 1 wave scattering. Data corresponds to θ=0 deg radii. The arrows indicate position of scattered wave. In each figure the phase, Φ, of incident wave cycle in radians is: (a) Φ≈0 (crest at location of cylinder center) (b) Φ≈0.5 (c) Φ≈1.1 (d) Φ≈1.7.

Spatial profiles of Type 2 wave scattering. Data corresponds to θ=0 deg radii. The arrows indicate position of scattered wave. In each figure the phase, Φ, of incident wave cycle in radians is: (a) Φ≈π (trough at location of cylinder center) (b) Φ≈3.3 (c) Φ≈3.9 (d) Φ≈4.5.

3D contour plots of data recorded along θ=0° radius: (a) Incident wave, (b) scattered waves

Temporal profiles recorded at r=D/2 (cylinder surface) for: (a) θ=0 dedg, (b) θ=90 deg, and (c) θ=180 deg

Nonlinear wave interaction due to the constructive interference of incident and scattered waves: (a) Inverted still image, (b) Experimental data

Wave probe locations for Stage 2 of the measuring program

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