Results 41 to 50 of about 10,468,359 (216)

Experimental and Numerical Investigation of Stepped Planing Hulls in Finding an Optimized Step Location and Analysis of Its Porpoising Phenomenon

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
Stability of a high‐speed craft is an essential matter, and porpoising is one of the most critical instabilities that could occur in some planing hulls due to inappropriate design. In this paper, the porpoising phenomenon and variation of step location yielding resistance reduction are studied through experimental and numerical methods.
Sayyed Mahdi Sajedi   +2 more
wiley   +1 more source

Seakeeping performance of a rounded hull catamaran in waves using CFD approach

open access: yesJournal of Mechanical Engineering and Sciences, 2017
Prediction of the seakeeping performance of a ship in the earlier ship’s design step is necessary to ensure the safety of navigation during sailing. To accommodate such a demand, this research proposes to analyse the seakeeping performance of a rounded ...
A. Fitriadhy   +2 more
doaj   +1 more source

Hydrodynamic Analysis of Ship with Well Deck in the Linear Numerical Wave Tank

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
In recent years, the development and construction of islands and reefs has been proposed by the government and commercial company. However, as a large cargo carrier cannot reach islands and reefs if the harbor is not available, such type of carrier which has well deck is designed to meet the requirements of delivering people and equipment.
Gang Xu   +5 more
wiley   +1 more source

Experimental studies on seakeeping and maneuverability of ships in adverse weather conditions [PDF]

open access: yes, 2017
The introduction of the energy efficiency design index (EEDI), which is applicable for various types of new-built ships after January 1,2013, raised concerns regarding the sufficiency of propulsion power and steering devices to maintain maneuverability ...
Cura-Hochbaum, Andrés   +6 more
core   +1 more source

Acceleration Signal Processing Method of Impact Response of Floating Shock Platform Based on Rigid Body Motion Model

open access: yesShock and Vibration, Volume 2020, Issue 1, 2020., 2020
Floating shock platform is generally used to test the antishock performance of large shipboard equipment. Shock acceleration signal will produce zero‐shift phenomenon in the test measurement process, which will affect the subsequent shock response spectrum analysis.
Xiongliang Yao   +5 more
wiley   +1 more source

Numerical Method to Simulate Self‐Propulsion of Aframax Tanker in Irregular Waves

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
With the implement of ship energy efficiency design index (EEDI), computational fluid dynamics (CFD) technique has become an effective method to predict the ship performance and further guide the designers to optimize hull lines. However, due to the complexity of the propeller‐hull interactions and the ship’s complex motions in waves, accurately ...
Gui-sheng Peng   +5 more
wiley   +1 more source

A seakeeping analysis method for an air-lifted vessel [PDF]

open access: yes, 2008
A seakeeping analysis in the frequency domain is presented to predict the motion response of an airlifted vessel (ALV) in waves. The ALV is supported by pressurised air in two separate cushion chambers; the pressure variation in the cushions has a ...
Jasionowski, A.   +3 more
core   +1 more source

Determination of Seakeeping Performance for a Case Study Vessel by the Strip Theory Method

open access: yesPolish Maritime Research, 2020
The increase of seakeeping performance is of particular importance for car and passenger ferries, service ships in the gas and oil extraction industry and offshore wind power farm industry, as well as for special purpose ships (including military ...
Niklas Karol, Karczewski Artur
doaj   +1 more source

An integrated methodology for the design of Ro-Ro passenger ships [PDF]

open access: yes, 2010
The present paper provides a brief introduction to the holistic approach to ship design, defines the generic ship design optimization problem and demonstrates its solution by use of advanced optimization ...
Boulougouris, Evangelos   +3 more
core   +1 more source

Bow shape design for river-sea vessels with increased seakeeping performance

open access: yesTRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE, 2022
Object and purpose of research. The purpose of this study was to develop a bow shape with increased block coefficient for river-sea vessels so as to improve their seakeeping at high sea states. Subject matter and methods.
V. Magarovsky   +4 more
semanticscholar   +1 more source

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