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Water 2016, 8(7), 300; doi:10.3390/w8070300

Investigation of the Effects of Ship Induced Waves on the Littoral Zone with Field Measurements and CFD Modeling

1
Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest 1111, Hungary
2
Department of Hydraulic and Environmental Engineering, Norwegian University of Science and Technology, Høgskoleringen 1, Trondheim 7491, Norway
3
Deparmtnet of Civil and Transport Engineering, Norwegian University of Science and Technology, Høgskoleringen 1, 7491 Trondheim 7491, Norway
4
Water Management Research Group, Hungarian Academy of Sciences—Budapest University of Technology and Economics, Nádor utca 7, Budapest 1051, Hungary
*
Author to whom correspondence should be addressed.
Academic Editor: Karl-Erich Lindenschmidt
Received: 26 April 2016 / Revised: 4 July 2016 / Accepted: 12 July 2016 / Published: 19 July 2016
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Abstract

Waves induced by ship movement might be harmful for the habitat in the littoral zone of rivers due to the temporally increasing bed shear stress, the high-energy breaking waves and the consequently related detachment of benthic animals. In order to understand the complex hydrodynamic phenomena resulting from littoral waves, we present the testing of a novel methodology that incorporates field observations and numerical tools. The study is performed at a section of the Danube River in Hungary and analyzes the influence of different ship types. The field methods consist of parallel acoustic measurements (using Acoustic Doppler Velocimetry (ADV)) conducted at the riverbed and Large Scale Particle Image Velocimetry (LSPIV) of the water surface. ADV measurements provided near-bed flow velocities based on which the wave induced currents and local bed shear stress could be estimated. The LSPIV was able to quantify the dynamics of the breaking waves along the bank. Furthermore, computational fluid dynamics (CFD) modeling was successfully applied to simulate the propagation and the breaking of littoral waves. The used techniques complement each other well and their joint application provides an adequate tool to support the improvement of riverine habitats. View Full-Text
Keywords: ship generated waves; ADV; LSPIV; CFD; breaking waves; river navigation ship generated waves; ADV; LSPIV; CFD; breaking waves; river navigation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fleit, G.; Baranya, S.; Rüther, N.; Bihs, H.; Krámer, T.; Józsa, J. Investigation of the Effects of Ship Induced Waves on the Littoral Zone with Field Measurements and CFD Modeling. Water 2016, 8, 300.

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