Yazar "Saydam, Ahmet Ziya" için listeleme
-
Acoustic analysis and measurements of mega yachts during construction
İnsel, Mustafa; Gökçay, S.; Saydam, Ahmet Ziya; Soyaslan, T.; Soyaslan, C. (Royal Institution of Naval Architects, 2019)Noise is a critical parameter for super/mega yachts which can be verified only in the final stage of a mega yacht building project. Although there are more and more advanced methods to predict noise prior to the sea trials, ... -
CFD based vortex generator design and full-scale testing for wake non-uniformity reduction
Saydam, Ahmet Ziya; Gökçay, Serhan; İnsel, Mustafa (Pergamon-Elsevier Science Ltd, 2018)Propeller-induced vibration on ships may originate from separation and wake non-uniformity and can be dealt with stem form redesign, wake adapted propeller design or wake modification devices such as fins, ducts or vortex ... -
A Decision Support System for Energy Efficient Ship Propulsion
Insel, Mustafa; Gökçay, Serhan; Saydam, Ahmet Ziya (Springer International Publishing Ag, 2018)[No Abstract Available] -
A DECISION-MAKING PROCESS FOR SELECTION OF BETTER SHIP MAIN DIMENSIONS WITH THE EEDI REQUIREMENT
Çalışal, Mehmet Sander; Yurdakul, Onur; Küçüksu , Gözde Nur; Saydam, Ahmet Ziya (Society of Naval Architects and Marine Engineers, 2022)As the main dimensions of a ship, are vital on the performance of a vessel, major improvements in performance may be achieved by selecting “better” main dimensions. This paper proposes to integrate in the design technique ... -
A decision-making process for the selection of better ship main dimensions by a Pareto frontier solution
Yurdakul, Onur; Küçüksu , Gözde Nur; Saydam, Ahmet Ziya; Çalışal, Mehmet Sander (Elsevier, 2021)Initial ship design necessitates the evaluation of main ship parameters to obtain a feasible design solution satisfying the objectives. Traditionally, relationship between main dimensions and design parameters of proven ... -
Evaluation of Aerodynamic Characteristics of Mega-Yacht Superstructures by CFD Simulations
Saydam, Ahmet Ziya; Gökçay, Serhan; İnsel, Mustafa (Soc Naval Architects Marine Engineers, 2020)Air wake distribution around the superstructure of a mega-yacht is a key concern for the designer because of various reasons such as comfort expectations in recreational deck areas, self-noise generation, air pollution and ... -
Evaluation of wind loads on ships by CFD analysis
Saydam, Ahmet Ziya; Taylan, Metin (Pergamon-Elsevier Science Ltd, 2018)Effect of wind loads on marine structures and ships has to be considered during design. Static and dynamic effects of wind forces and moments are incorporated into the rules and regulations of governing authorities by ... -
Investigation of the Effect of Leading-Edge Tubercles on Wingsail Performance
In this study, effects of leading edge tubercles on a 2013 America’s Cup boat wingsail are investigated by viscous Computational Fluid Dynamics (CFD). Adding tubercles on the leading edge of the sail is inspired by humpback ... -
Multi-criteria optimization of high speed naval vessels: A pareto approach
Yurdakul, Onur (Piri Reis Üniversitesi, 2018)Gemi tasarım sürecinde ana boyutları belirlemek en önemli, ancak genel olarak düşünüldüğünde etkisi tüm süreci etkileyecek olmasına rağmen oldukça hafife alınan iş paketlerinden biridir. Tasarımcının görevi en kısa sürede, ... -
Numerical analysis of a hydrofoil in close proximity to free surface
Ayyıldız, Murat (Piri Reis Üniversitesi, 2019)Bu çalışmada, serbest su yüzeyine yakın bir hidrofoilin hidrodinamik ve dalga yapma karakteristikleri sayısal tekniklerle değerlendirilmiştir. Deney sonuçları farklı derinlikler ve akış hızlarında RANS hesaplamalı akışkanlar ... -
Numerical Investigation of 2-D Wave Making Characteristics of a Submerged Hydrofoil
In this study, 2-D wave making characteristics of a submerged hydrofoil has been investigated in a numerical fashion. Experimental data available for different depths of submergence and flow velocities have been compared ... -
A Numerical study on the hydrodynamic performance of an immersed foil: Uncertainty quantification of RANS and SPH methods
Ayyıldız, Murat; Saydam, Ahmet Ziya; Özbulut, Murat (Pergamon-Elsevier Science Ltd, 2019)The hydrodynamic characteristics of floating or immersed bodies may be evaluated by a variety of numerical techniques. Although these currently available techniques are well-established for providing valuable information ... -
UNCERTAINTY QUANTIFICATION OF SELF-PROPULSION ANALYSES WITH RANS-CFD AND COMPARISON WITH FULL-SCALE SHIP TRIALS
Saydam, Ahmet Ziya; Küçüksu , Gözde Nur; Insel, Mustafa; Gökçay, Serhan (University of Zagreb - Faculty of Mechanical Engineering and Naval Architecture, 2022)RANS-CFD is a well-established tool with widespread use in maritime industry and research. Valuable information might be extracted from the results of such simulations in terms of ship resistance and flow field variables. ...
