Results 231 to 240 of about 7,893 (252)

Experimental and Numerical Analysis of the Roll Decay Motion for a Patrol Boat

2009
The analysis of the roll motion of a ship is of practical interest for both safety and comfort reasons. In this paper an experimental and numerical analysis of the roll decay for a patrol boat of the Italian Navy is carried out. Full scale trials in the Mediterranean sea in cooperation with NSWCCD (Naval Surface Warfare Center, Carderock Division) and ...
Broglia R, Bouscasse B, Di Mascio A, Lugni C, Atsavapranee P   +4 more
openaire   +8 more sources

Analysis of Roll Decay for Surface-Ship Model Experiments With Uncertainty Estimates

Journal of Verification, Validation and Uncertainty Quantification, 2023
Abstract Roll decay of David Taylor model basin (DTMB) Model 5720, a 23rd-scale free-running model of the research vessel (R/V) Melville, is evaluated with uncertainty estimates. Experimental roll-decay time series was accurately modeled as an exponentially decaying cosine function, which is the solution of a second-order ordinary ...
openaire   +1 more source

Expected Time Value Decay of Options: Implications for Put‐Rolling Strategies

Financial Review, 2008
AbstractAssuming the underlying asset price remains constant, previous studies show that the time value of an option decays gradually at a rate that accelerates over time and peaks at the expiration date. Thus, a significant portion of time value is lost in the four weeks leading up to expiration.
George F. Tannous, Clifton Lee‐Sing
openaire   +1 more source

100-Year Analysis of Roll Decay for Surface-Ship Models

Journal of Verification, Validation and Uncertainty Quantification
Abstract A history is described on roll decay analysis for experiments with surface-ship scale models at the Naval Warfare Center Carderock Division (NSWCCD), a naval hydrodynamic facility known as David Taylor Model Basin (DTMB). The earliest roll decay analysis for a model test is from a report in 1923 that compares roll decay analysis
Joel T. Park, Andrew M. McCoy
openaire   +1 more source

SPIV measurements around a frigate model in free decay roll motion

2004
An experimental analysis of 3D velocity field evolution of a ship model in afree rolling motion has been carried out at the INSEAN towing tank. Measurement has been performing by using stereo PIV technique (SPIV) acquiring the evolution of the velovity field during the damped rolling motion of the ship.
Di Felice, Fabio, Alves Pereira, Francisco, Bouscasse, Benjamin, Palini, Massimo, Bartoccioni, Giorgio   +4 more
openaire   +3 more sources

Seakeeping and roll-decay tests on cargo ship model C.2630

2023
This report presents the results of seakeeping and roll-decay tests performed on the Cargo Ship model, named C.2630 according to the CNR-INM code, conducted in the seakeeping tank "E. Castagneto" of CNR-INM. The tests were carried out in the framework of the research project GATERS - GATE Rudder System as a Retrofit for the Next Generation Propulsion ...
Ivan Santic, Edoardo Faiella, Fabio Carta, Alessandro Di Cola, Giovanni Coppola, Fabio Arrigo, Alessandro Piazza, Giulio Orrico, Roberto Basti, Stefano Dalla Torre, Luigi D'Addeo, Riccardo Scaccia, Leonardo Scopa, Luigi Fabbri   +13 more
openaire   +1 more source

Estimation of Nonlinear Ship Roll Damping from Free-Decay Data

Journal of Ship Research, 1985
A common method of assessing the damping present in ship rolling motion is to perform a free-decay experiment, in which, in the absence of waves, the ship is given an initial roll amplitude and then released. By processing the resulting decaying, oscillatory trace it is possible to estimate quantitatively the degree of damping, even when this is ...
openaire   +1 more source

Free roll decay simulation of a polar research vessel with an anti-roll tank based on CFD

Ocean Engineering, 2023
Chao Chen, Ya-dong Liu, Wei Zhang, Yan-ping He, Yu-ying Tang   +4 more
openaire   +1 more source

Numerical free roll decay prediction for the DTMB hull

AIP Conference Proceedings, 2019
Adham S. Bekhit, Adrian Lungu
openaire   +1 more source

Roll decay sul modello di Nave Bielica LSS (Fincantieri)

2016
In questa campagna sono state eseguite le serie di misura del periodo di smorzamento e dei relativi coefficienti di smorzamento al primo ed al secodo ordine per le velocità di 12 e 20 nodi e a punto fisso su una nave da supporto logistico in costruzione per la Marina Militare Italiana.
Fabbri, Luigi (1), D'Addeo, Luigi (1), Palini, Massimo (1), Sale, Mauro (1), Spurio, Luca (1)   +4 more
openaire   +1 more source