Results 211 to 220 of about 7,893 (252)

Flash-Infrared-Annealing-Enabled High-Temperature Sintering of Photoanodes on Flexible Polymer Foils for Ultralight Photovoltaics. [PDF]

open access: yesACS Energy Lett
Bradford D   +11 more
europepmc   +1 more source

Highly Efficient Mechanochromic Thermally Activated Delayed Fluorescence in the Deep Red to Near-Infrared in Copper(I) [2.2]Isoindolinophanyl-Carbene Carbazolates. [PDF]

open access: yesAngew Chem Int Ed Engl
Muthig AMT   +10 more
europepmc   +1 more source

Roll damping decay of a FPSO with bilge keel

Ocean Engineering, 2014
The roll damping decay is investigated for a Floating Production Storage and Offloading (FPSO). For this purpose, a roll decay test of a middle section of FPSO with bilge keel is simulated by means of the numerical solution of the incompressible two-dimensional Navier–Stokes equations.
Juan B V Wanderley   +1 more
exaly   +2 more sources

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, Yusuke Tahara
exaly   +2 more sources

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
exaly   +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.
Metin Kemal Gökçe, Ömer Kemal Kinaci
exaly   +3 more sources

Nonlinear roll damping parameter identification using free-decay data

Ocean Engineering, 2021
Abstract A common practice for evaluating the nonlinear damping in ship roll motion is to perform a free-decay experiment. Although various methods have been developed to estimate the coefficients of a nonlinear damping model, these methods are limited to certain and relatively simple models.
Sau-Lon James Hu
exaly   +2 more sources

Estimation of ship roll damping—A comparison of the decay and the harmonic excited roll motion technique for a post panamax container ship

Ocean Engineering, 2016
The decay motion as well as the harmonic excited roll motion are established techniques to estimate roll damping for ships. This paper compares the advantages and disadvantages of both techniques and focuses on their applicability. Different analysis methods for both techniques to determine the nonlinear roll damping moment are investigated with the ...
Dag-Frederik Feder   +1 more
exaly   +2 more sources

Experimental and numerical estimation on roll damping and pressure on a 2-D rectangular structure in free roll decay test

Ocean Engineering, 2020
Abstract Experimental and numerical studies were performed to estimate roll damping and hydrodynamic pressure on a 2-D rectangular structure. Free roll decay test was simulated by experiment in 2-D wave tank with Particle Image Velocimetry (PIV) measurement, and by numerical simulations using CFD based on an unsteady incompressible Reynolds-Averaged ...
Mingyu Kim   +2 more
exaly   +2 more sources

Recovering the functional form of the nonlinear roll damping of ships from a free-roll decay experiment: An inverse formulism

Ocean Engineering, 2010
Abstract The purpose of this paper is to identify the functional form of the nonlinear roll damping for a particular ship based on an experiment. The problem of damping identification is formulated as an integral equation of the first kind. However, the solution of the problem lacks stability properties, due to the ill-posedness of the first-kind ...
T S Jang, S H Kwon
exaly   +2 more sources

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