Results 251 to 260 of about 3,190,708 (312)

Reconstructing flexible body vortex-induced vibrations using machine-vision and predicting the motions using semi-empirical models informed with transfer learned hydrodynamic coefficients

Journal of Fluids and Structures
This work assesses the validity of transfer learning the hydrodynamic coefficient database, consisting of the added mass and lift coefficients, applicable to flexible bodies undergoing vortex-induced vibrations. Specifically, the hydrodynamic coefficient
Andreas P. Mentzelopoulos, E. Prele, Dixia Fan, José del Águila Ferrandis, T. Sapsis, Michael S. Triantafyllou   +5 more
semanticscholar   +1 more source

Optimization of Hydrodynamic Coefficients for VIV Prediction

Volume 8: CFD and FSI, 2021
Abstract Vortices generated when flow pass offshore slender structures may cause structural vibrations due to fluid-structure interaction, termed vortex-induced vibrations (VIV). VIV can cause severe accumulated fatigue damage, which need to be considered in the structure design.
Decao Yin, Jie Wu, Halvor Lie, Jingzhe Jin, Elizabeth Passano, Svein Saevik, Signe Riemer-Sorenson, Anne Marthine Rustad, Michael A. Tognarelli, Guttorm Grytyr, Torgrim Andersen, Daniel Karunakaran, Ragnar Igland, Collin Gaskill   +13 more
openaire   +1 more source

Review of Hydrodynamic Coefficients for Riser Design

Offshore Technology Conference, 2022
Abstract A literature review of experimental and computational hydrodynamic research is presented with the objective of highlighting the parameters that affect riser added mass coefficient (Ca) and drag coefficient (Cd). Typical riser analysis is conducted assuming constant values of hydrodynamic coefficients.
Dhyanjyoti Deka, Mike Campbell, Ilkay Darilmaz, Stephen Hodges   +3 more
openaire   +1 more source

Hydrodynamic coefficients for calculation of hydrodynamic loads on offshore truss structures

Marine Structures, 1996
Abstract The current American Petroleum Institute's recipe [API RP 2A WSD, Recommended practice for planning, designing and constructing fixed offshore platforms, working stress design. API, USA, 1993.] for calculation of hydrodynamic loads on offshore truss structures is compared with the corresponding North Sea Design Practice, as given by the ...
Ove T. Gudmestad, Geir Moe
openaire   +1 more source

Hydrodynamic Coefficients For Macrd-Roughnesses

Offshore Technology Conference, 1981
ABSTRACT Consideration is given to the drag of cylinders in fluid flow as influenced from the very large and lumpy roughnesses of marine growths. A means of characterizing the effective diameter is based on the Strouhal number of the roughened cylinder.
openaire   +1 more source

On the assessment of hydrodynamic coefficients of cylinders in heaving

Ocean Engineering, 1997
A detailed comparison is made of the common two-dimensional methods for the evaluation of the hydrodynamic coefficients. Special attention was given to the conformal transformation method and the parameters which influence the accuracy of this method are studied.
J. Ramos, C. Guedes Soares
openaire   +1 more source

Hydrodynamic coefficients of a harmonically oscillated tower

Applied Ocean Research, 1983
Abstract A tower hinged at the bottom was oscillated mechanically in a sinusoidal fashion in a plane in still water. An instrumented section in the tower measured the inline and transverse forces locally on the tower due to the hydrodynamic effects.
Subrata K. Chakrabarti, Dennis C. Cotter, Alan R. Libby   +2 more
openaire   +1 more source

Hydrodynamic coefficients for vertical composite cylinders

Ocean Engineering, 1984
Abstract An efficient method of calculation for vertical, composite cylinders at finite depth is presented. Hydrodynamic coefficients calculated by this method are compared with numerical results obtained by a surface element method.
S.M. Calisal, T. Sabuncu
openaire   +1 more source

Influence of the Blocking Effect of Circulating Water Channels on Hydrodynamic Coefficient Estimation for Autonomous Underwater Vehicles

Journal of Marine Science and Application, 2023
Lingyu Li, Hongde Qin, Peng Li, Xiangqian Wang   +3 more
semanticscholar   +1 more source

Interpolation and extrapolation of hydrodynamic coefficients

Applied Ocean Research, 1983
Abstract The solution to the problem of calculating the hydrodynamic forces on multiple floating bodies is summarised. The complex coefficients which characterise the forces at each frequency of oscillation are expensive to compute; interpolation of intermediate values and extrapolation to high frequencies appear difficult since the coefficients seem
openaire   +1 more source