ON WAVE-DRIVEN “SHINGLE” BEACH DYNAMICS IN A TABLE-TOP HELE-SHAW CELL

Proceedings of the International Conference on Coastal Engineering

A.J. van der Horn³  Wout Zweers¹  Devaraj van der Meer³  Onno Bokhove⁴  Anthony R. Thornton² 

[1] FabLab, Saxion College, Enschede, 7513 AB, The Netherlands;Department of Applied Mathematics/Mechanical Engineering, University of Twente, 7500 AE, Enschede, The Netherlands;Department of Physics, University of Twente, Enschede, 7500 AE, The Netherlands;School of MathematicsUniversity of Leeds, LS2 9JTLeeds, United Kingdom

关键词: shingle beaches;    wave breaking;    table-top realization;    Hele-Shaw cell;   

DOI  :  10.9753/icce.v34.sediment.41

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The primary evolution of beaches by wave action takes place during storms. Beach evolution by non-linear breaking waves is 3D, multi-scale, and involves particle-wave interactions. We will show how a novel, three-phase extension to the classic “Hele-Shaw” laboratory experiment is designed to create beach morphologies with breaking waves in a quasi-2D setting. Idealized beaches emerge in tens of minutes due to several types of breaking waves, with about 1s periods. The thin Hele-Shaw cell simplifies the inherent complexity of three-phase dynamics by reducing the turbulence. Given the interest in the Hele-Shaw table-top demonstrations at ICCE2014, we will also discuss howdifferent versions of the Hele-Shaw cell have been constructed. Construction can be inexpensive thus yielding anaccessible and flexible coastal engineering demonstration as well as research tool. Beach evolution is sufficiently fastand can start very far from equilibrium, allowing an unusually large dynamical range to be investigated.

【 授权许可】

Unknown