Contribution of Wind and Waves in Exchange of Seawater through Flushing Culverts in Marinas

Goran Lončar ,Ivana Bartolić ,Damjan Bujak

doi:10.17559/tv-20160912211937

Goran Lončar , Ivana Bartolić + Show 1 more

Open Access

https://doi.org/10.17559/tv-20160912211937

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Abstract

In this work contribution of wind and waves on the water exchange through flushing culverts between the marina and surrounding water body have been investigated. The hybrid modelling technique was used. Results of culvert discharge, produced by waves on physical model, were implemented in 3D circulation model. Using circulation model, the optimum flushing culverts position in body of breakwater was defined for marinas with hypothetical geometry, characteristic for Croatian Adriatic Sea. The model was forced by wind from 8 directions and velocities 1-5 Bf. Furthermore, numerical simulations were also done for a real - world marina – the Icici marina. The real breakwater geometry and hydrographic conditions (depths, tides, sea temperatures and salinity) were included. The analysis results show that the flushing culverts may have important contribution to seawater exchange in marina, even in summertime situations with significant wave heights of 0.5 m and duration of 6 hours.

Highlights

According to the legal definition, nautical tourism is defined as navigation and staying in nautical ports by tourists for rest and recreation
This paper presents the results of numerical simulations and research on the physical model
Flushing culverts contribution on seawater exchange in the marina basin using numerical circulation model and the results obtained from physical modelling was carried out

Summary

INTRODUCTION

According to the legal definition, nautical tourism is defined as navigation and staying in nautical ports by tourists for rest and recreation. Flushing culverts application is justified in areas with small tidal variations (such as the Adriatic and the Aegean Sea), where the tide variations difference is not enough for sufficient marina flushing rate [6] or in semiclosed and closed bays where tidal circulation is poor [7] For this reasons, researches associated with flushing culverts come mostly from the countries with similar oceanographic conditions, from Greece and Turkey in the Aegean Sea [6, 8,9,10,11,12,13,14,15,16,17]. Tidal variations effect is generally recognized as insufficient for the flushing process

PROBLEM STATEMENT

NUMERICAL CIRCULATION MODEL FOR HYPOTHETICAL MARINA

NUMERICAL MODEL OF WAVE GENERATION

PHYSICAL MODEL

Findings

CONCLUSION