This study aims to clarify the effect of surface conditions of solid on wave propagation at solid-fluid interface with fluid-structure interaction. Although many studies have been done to develop the theoretical models of fluid-structure interaction caused by wave propagation, they do not take into account the surface conditions of the solid medium on the solid-fluid interface where interaction occurs. In this study, we experimentally investigated the wave propagation across the solid-fluid interface with several value of surface wettabilities and roughnesses of solid. We conducted an impact experiment with a free-falling projectile which hit the cylindrical solid buffer placed on top of the water surface within the elastic tube standing on the ground. During the experiments, cavitation bubbles were generated from the interface of the buffer and water. That generation was inhibited according to the decrease of the value of the contact angle (improve of the wettability) of the buffer surface. The amplitude of transmitted pressure wave from the buffer to water become smaller than the theoretical value according to the decrease of the value of the contact angle on the buffer surface (the smallest value was 55% of the theoretical value). Concerning the surface roughness, the amplitude of transmitted pressure wave becomes smaller than the theoretical value according to the shape of the buffer surface become more different from flat surface (the smallest value was 75% of the theoretical value). These experimental results indicate that by taking into account the surface condition of the solid on the interface, more accurate model of fluid-structure interaction or ways to reduce the damage of structures by fluid-structure interaction would be proposed.
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ASME 2016 Pressure Vessels and Piping Conference
July 17–21, 2016
Vancouver, British Columbia, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5040-4
PROCEEDINGS PAPER
Wave Propagation Across the Interface of Fluid-Structure Interaction With Various Surface Conditions of Solid Medium Available to Purchase
Tomohisa Kojima,
Tomohisa Kojima
Tokyo Institute of Technology, Meguro-ku, Japan
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Kazuaki Inaba,
Kazuaki Inaba
Tokyo Institute of Technology, Meguro-ku, Japan
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Kosuke Takahashi
Kosuke Takahashi
Tokyo Institute of Technology, Meguro-ku, Japan
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Tomohisa Kojima
Tokyo Institute of Technology, Meguro-ku, Japan
Kazuaki Inaba
Tokyo Institute of Technology, Meguro-ku, Japan
Kosuke Takahashi
Tokyo Institute of Technology, Meguro-ku, Japan
Paper No:
PVP2016-63746, V004T04A003; 10 pages
Published Online:
December 1, 2016
Citation
Kojima, T, Inaba, K, & Takahashi, K. "Wave Propagation Across the Interface of Fluid-Structure Interaction With Various Surface Conditions of Solid Medium." Proceedings of the ASME 2016 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Vancouver, British Columbia, Canada. July 17–21, 2016. V004T04A003. ASME. https://doi.org/10.1115/PVP2016-63746
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