Safak Nur Erturk Bozkurtoglu

Istanbul Technical University · Department of Shipbuilding and Ocean Engineering

Ballast tank sediments host organisms that pose invasion risk even if the ships are installed with ballast treatment systems. The bottom sediments also contribute to corrosion and cause cumulative deadweight loss over the years. This study presents the outcomes of the project “Conceptual Ballast Tank Design for Reducing Sediment Accumulation” (TUBI...

Ballast tank sediments may cause several problems in a wide range changing from environmental to economical. Its contribution to biological invasion is an important concern. Thus, the sediment management is included as an integral component of the “The International Convention on the Control and Management of Ships’ Ballast Water and Sediments”. Th...

Ballast tanks usually contain a mixture of various sediments taken on-board. The quantity and content of this mixture depend on the operational history of the vessel and the time elapsed since the last dry-docking. Sediment accumulation may be varied from a few cm to more than 30 cm depth, which may reach up to 100's of tons of sediment in the ball...

Ballast tanks have a highly complicated geometric structure consisting of several interconnected sections where transverse and longitudinal strength elements are involved. Because of this structure of the tanks, sediment accumulates in various regions within the tank and can not be discharged. The accumulation of sediment in ballast tanks can cause...

Transportation of harmful aquatic organisms and pathogens through the ballast tanks has been a popular research topic in various parts of the world since the nineties. These studies expose the global dimension and the importance of the problem. The IMO adopted the " International Convention for the Control and Management of Ships' Ballast Water and...

Brine, which has high salinity and density values, is a byproduct of seawater reverse osmosis systems. Disposing brine by marine outfalls has been the most feasible and cheap method. Disposed brine constitutes a dense layer at the sea bottom due to its high density. In this study, horizontal single point discharge of brine in the wave direction and...

Tidal flow in Great Bay, New Hampshire, has been simulated by using a finite element numerical model as described in Ip et al. (1998). The model is a two dimensional, nonlinear, time stepping model, which incorporates two-dimensional wave physics with a porous medium underlying the sediment surface to simulate flooding and draining processes on...

Realistic lunar tides of the Great Bay Estuarine System have been simulated using a fixed boundary finite element numerical model as described by Ip et al. [1998]. It is a two-dimensional, nonlinear, time-stepping model with a groundwater component coupled to a kinematic force balance to facilitate the realistic drainage and filling of elements dur...

Includes bibliographical references. Thesis (Ph. D.)--University of New Hampshire, 2000.