Results 261 to 270 of about 1,024,399 (337)

Several remarks on EFD and CFD for ship roll decay

Ocean Engineering, 2019
Abstract A purpose-built device was designed to obtain high-quality experimental fluid dynamics (EFD) data of ship roll decay motions initially. Then, a model experiment was conducted for a slender ship using the proposed device with an accurate optical fibre gyroscope. A few important remarks on EFD were derived through analyses of the measured data.
Hirotada Hashimoto, Tomoyuki Omura, Akihiko Matsuda, Shota Yoneda, Frederick Stern, Yusuke Tahara   +5 more
semanticscholar   +3 more sources

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

Ocean Engineering, 2023
Chao Chen, Yadong Liu, Wei Zhang, Yanping He, Yuying Tang   +4 more
semanticscholar   +3 more sources

Free Roll Decay Study of a Damaged Ship for CFD Validation

Volume 6: Ocean Engineering, 2011
Among many factors to be considered for higher safety level requirements, the hull stability in intact and damaged conditions in seaway is of utmost importance. Since the assessment of the damaged stability is complicated due to the highly non-linear behavior, it is widely acknowledged that computational fluid dynamics (CFD) methods are the only viable
Sungkyun Lee, Ji-Myoung You, Hyun-Ho Lee, Shin Hyung Rhee, Key-Pyo Rhee   +4 more
semanticscholar   +3 more sources

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Automated processing of free roll decay experimental data

Ocean Engineering, 2015
This work presents an efficient numerical and modular approach to assessing viscous roll damping coefficients from free decay tests. In order to reduce the time consumed during analysis, numerical pre-processing of the data without visual inspection is suggested. The method involves breaking down multiple decay motions recorded in a single time series,
E. Uzunoglu, C. Guedes Soares
openaire   +2 more sources

Numerical simulations of free roll decay of DTMB 5415

Ocean Engineering, 2018
Abstract Computational fluid dynamics (CFD) that implement finite volume method are offering accurate and precise solutions for ship roll problem. In this study, the free roll decay of the benchmark DTMB 5415 hull with bilge keels in calm water was numerically solved by applying this type of code.
Gokce M.K., Kinaci O.K.
openaire   +3 more sources

Particle bed charge decay behaviour under high tension roll separation

Minerals Engineering, 2005
A new theory of particle discharge in high tension roll (HTR) separation is presented. The discharge dynamics of an isolated charged particle resting on a conducting surface are studied first. The analysis is extended to particle discharge in a homogenous particle bed.
M. Ziemski, P. N. Holtham
openalex   +3 more sources

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   +2 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 ...
J. Park
openaire   +2 more sources

Learning Nonlinear Forces from Ship Roll Decay Data

, 2023
Kyle E. Marlantes, Kevin J. Maki
openalex   +2 more sources

Analysis of the Roll Decay Motion for a Patrol Boat by URANS Simulations

Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV, 2009
The simulations of the flow around a vessel of the Italian Navy in free roll decay have been carried out by the numerical solution of the Reynolds Averaged Navier-Stokes equations. The focus is on the analysis of the roll motion coefficients (damping and period of oscillations) at different Froude and Reynolds numbers.
Broglia R, Muscari R, Di Mascio A
openaire   +3 more sources