Numerical investigation of the behaviour and performance of ships advancing through restricted shallow waters

Date

2018-01-01

Author

Terziev, Momchil
Tezdogan, Tahsin
Oğuz, Elif
Gourlay, Tim
Demirel, Yigit Kemal
Incecik, Atilla

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

121
views

0
downloads

Upon entering shallow waters, ships experience a number of changes due to the hydrodynamic interaction between the hull and the seabed. Some of these changes are expressed in a pronounced increase in sinkage, trim and resistance. In this paper, a numerical study is performed on the Duisburg Test Case (DTC) container ship using Computational Fluid Dynamics (CFD), the Slender-Body theory and various empirical methods. A parametric comparison of the behaviour and performance estimation techniques in shallow waters for varying channel cross-sections and ship speeds is performed. The main objective of this research is to quantify the effect a step in the channel topography on ship sinkage, trim and resistance. Significant differences are shown in the computed parameters for the DTC advancing through dredged channels and conventional shallow water topographies. The different techniques employed show good agreement, especially in the low speed range. (C) 2017 The Authors. Published by Elsevier Ltd.

Subject Keywords

Flows, Design, Design, Resistance, Prediction, Cfd simulations, Squat

URI

https://hdl.handle.net/11511/32742

Journal

JOURNAL OF FLUIDS AND STRUCTURES

DOI

https://doi.org/10.1016/j.jfluidstructs.2017.10.003

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Numerical Analysis of the Behaviour of Vessels Advancing through Restricted Shallow Waters Tezdoğan, Tahsin; Terziev, Momchil; Oğuz, Elif; İncecik, Atilla (2018-04-25) Upon entering shallow waters, ships experience a number of changes due to the hydrodynamic interaction between the hull and the seabed. Some of these changes are expressed in a pronounced increase in sinkage, trim and resistance. In this paper, a numerical study is performed on the Duisburg Test Case (DTC) container ship using Computational Fluid Dynamics(CFD), the Slender-Body theory and various empirical methods. A parametric comparison of the behaviour and performance estimation techniques in shallow wat...
Design and performance analysis of a counter rotating propeller Öztürk, Sercan; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2022-12) Whether it is a large container ship or a submarine operating at depths of hundreds of meters, propellers are in action to advance in the water. Counter-rotating propeller, abbreviated as CRP, is a combined propulsor where the propellers, called forward and aft, are placed one behind another and rotate in opposite directions. The main advantages of a CRP are increased efficiency due to less fuel consumption than a single propeller and torque cancellation phenomena by rotations in opposite directions. In the...
Numerical Validation of a Pyroshock Test System and Application to Qualification Tests Yalçınkaya, Tuncay; Gursoy, Bahadir (2022-08-01) Spacecraft are exposed to severe mechanical loads, i.e., shock loads, during their journey to orbit. Such loads usually develop due to a separation event through the activation of pyrotechnic devices. They might be transmitted throughout the entire structure and strongly influence the service performance of electronic components. Therefore, it is crucial to study whether the instruments can resist such a harsh environment. However, due to the vulnerability and high cost of the equipment, experimental setups...
Numerical investigation of coherent structures forming around bridge piers sitting on an inclined surface Hesap, Emre; Köken, Mete; Department of Civil Engineering (2021-11) Coherent structures forming around the piers play an important role in the formation of scour hole. Detached Eddy Simulation is used in this study to investigate the three-dimensional coherent structures forming around bridge piers which sit on an inclined surface. Initiation of the scour process at flat bed conditions is investigated within the current study. Two cases are investigated one with the lower Reynolds number case which is typical for flume experiments whereas the larger Reynolds number case re...
Implementation and assessment of k-omega-gamma transition model for turbulent flows Karabay, Sami; Baran, Özgür Uğraş; Department of Mechanical Engineering (2022-5-09) The transition from laminar flow to turbulence is challenging to model in CFD. Due to the complex nature of transition, it is neglected in CFD codes usually by assuming the flow is fully turbulent. However, this results in missing the fundamental characteristics of the flow and inaccurate predictions of the flow field. Although there are several transition models, most of them cannot be used in CFD simulations due to practical issues or low accuracy. Yet, some of these models are promising and candidates to...

Citation Formats

M. Terziev, T. Tezdogan, E. Oğuz, T. Gourlay, Y. K. Demirel, and A. Incecik, “Numerical investigation of the behaviour and performance of ships advancing through restricted shallow waters,” JOURNAL OF FLUIDS AND STRUCTURES, pp. 185–215, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32742.