SPLASH, VORTICES AND TURBULENT SHEARS IN PARTIAL DAM-BREAK FLOWS -- SPLASH MODEL OF WAVE-BREAKING AND OVERTOPPING --

Yasunori Watanabe; Shunichi Sato; Yasuo Niida; Ichiro Kimura; Hiroshi Yokota; Haruhi Oyaizu; Yuki Oshima; Ayumi Saruwatari

doi:10.9753/icce.v34.waves.4

No. 34 (2014), Waves

No. 34 (2014)

SPLASH, VORTICES AND TURBULENT SHEARS IN PARTIAL DAM-BREAK FLOWS -- SPLASH MODEL OF WAVE-BREAKING AND OVERTOPPING --

Waves

https://doi.org/10.9753/icce.v34.waves.4

Published 2014-10-30

Yasunori Watanabe⁺⁻
Shunichi Sato⁺⁻
Yasuo Niida⁺⁻
Ichiro Kimura⁺⁻
Hiroshi Yokota⁺⁻
Haruhi Oyaizu⁺⁻
Yuki Oshima⁺⁻
Ayumi Saruwatari⁺⁻

Yasunori Watanabe

Hokkaido University

Shunichi Sato

City of Sapporo

Yasuo Niida

Central Research Institute of Electric Power Industry

Ichiro Kimura

Hokkaido University

Hiroshi Yokota

Hokkaido University

Haruhi Oyaizu

Hokkaido University

Yuki Oshima

Hokkaido University

Ayumi Saruwatari

Hokkaido University

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Keywords

wave breaking
overtopping
splash
vortex
LES

How to Cite

Watanabe, Y., Sato, S., Niida, Y., Kimura, I., Yokota, H., Oyaizu, H., Oshima, Y., & Saruwatari, A. (2014). SPLASH, VORTICES AND TURBULENT SHEARS IN PARTIAL DAM-BREAK FLOWS -- SPLASH MODEL OF WAVE-BREAKING AND OVERTOPPING --. Coastal Engineering Proceedings, 1(34), waves.4. https://doi.org/10.9753/icce.v34.waves.4

Abstract

Three-dimensional evolution of local fluid flows and surface shapes under partial collapse of a water column is characterized during computational experiments using three-dimensional large eddy simulation in this paper. The free-surface behaviors highly depend on the collapse level and ambient water layer depth via mechanical interactions between the surface and vortices. It has been found major three modes of the splashing responses of the free-surfaces and vortex structures; (i) forward projection of secondary jets, which organizes a typical rib-like vortex structure stretched underneath the jets, (ii) backward jet projection with an inverse form of the rib structure, and (iii) blob-like waves induced by an array of the horizontal roller vortices. These findings provide new perspectives to understand wave breaking behaviors as well as practical assessments for the fluid responses in the splashing area for sea wall overflow and overtopping.

https://doi.org/10.9753/icce.v34.waves.4

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References

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Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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SPLASH, VORTICES AND TURBULENT SHEARS IN PARTIAL DAM-BREAK FLOWS -- SPLASH MODEL OF WAVE-BREAKING AND OVERTOPPING --

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