Results 11 to 20 of about 147,583 (292)

A New Six-DoF Parallel Mechanism for Captive Model Test

open access: yesPolish Maritime Research, 2020
In order to obtain the hydrodynamic coefficients that can save cost and meet the accuracy requirements, a new hydrodynamic test platform based on a 6DoF (six degrees of freedom) parallel mechanism is proposed in this paper.
Lu Yun, Wu Jinbo, Li Weijia, Wu Yaozhong
doaj   +1 more source

On the Adaptation of an AUV into a Dedicated Platform for Close Range Imaging Survey Missions

open access: yesJournal of Marine Science and Engineering, 2022
This study presents the redesign of an existing autonomous underwater vehicle (AUV) with limited maneuverability, transforming it into a platform optimized for autonomous, near-seabed visual imaging missions.
Yevgeni Gutnik   +3 more
doaj   +1 more source

Breakdown of hydrodynamics in the inelastic Maxwell model of granular gases [PDF]

open access: yes, 2010
Both the right and left eigenfunctions and eigenvalues of the linearized homogeneous Boltzmann equation for inelastic Maxwell molecules corresponding to the hydrodynamic modes are calculated. Also, some non-hydrodynamic modes are identified.
J. A. McLennan   +5 more
core   +2 more sources

The effects of the circulating water tunnel wall and support struts on hydrodynamic coefficients estimation for autonomous underwater vehicles

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2020
This paper investigates the influence of the Circulating Water Channel (CWC) side wall and support struts on the hydrodynamic coefficient prediction for Autonomous Underwater Vehicles (AUVs) experiments. Computational Fluid Dynamics (CFD) method has been
Hai Huang   +4 more
doaj   +1 more source

Comparisons between seabed and free surface effects on underwater vehicle hydrodynamics

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2022
This paper presents a numerical study on the hydrodynamic coefficients of the DARPA SUBOFF hull when deeply submerged and near the seabed. The CFD-based model was validated with experimental data, namely experiments involving the SUBOFF and BB2 ...
Xavier Ling   +4 more
doaj   +1 more source

Superfluid Kubo Formulas from Partition Function [PDF]

open access: yes, 2013
Linear response theory relates hydrodynamic transport coefficients to equilibrium retarded correlation functions of the stress-energy tensor and global symmetry currents in terms of Kubo formulas.
Chapman, Shira, Hoyos, Carlos, Oz, Yaron
core   +2 more sources

Hydrodynamic calculation and analysis of a complex-shaped underwater robot based on computational fluid dynamics and prototype test

open access: yesAdvances in Mechanical Engineering, 2017
In this article, a mathematical model of hydrodynamic force was established to model the influence of wall in realizing the precise control and maneuverability of a complex-shaped underwater robot.
Zhandong Li   +5 more
doaj   +1 more source

First-order virial expansion of short-time diffusion and sedimentation coefficients of permeable particles suspensions [PDF]

open access: yes, 2011
For suspensions of permeable particles, the short-time translational and rotational self-diffusion coefficients, and collective diffusion and sedimentation coefficients are evaluated theoretically.
Bogdan Cichocki   +7 more
core   +2 more sources

Virtual maneuvering test in CFD media in presence of free surface

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2015
Maneuvering oblique towing test is simulated in a Computational Fluid Dynamic (CFD) environment to obtain the linear and nonlinear velocity dependent damping coefficients for a DTMB 5512 model ship.
Ahmad Hajivand   +1 more
doaj   +1 more source

Hydrodynamic Coefficients of Simplified Subsea Structures [PDF]

open access: yesVolume 1: Offshore Technology, 2018
Simplified two-dimensional models, representing components of complex subsea structures, are experimentally investigated. Individual as well as combinations of components in different configurations are tested, in order to study the effect of hydrodynamic interaction.
Mentzoni, Fredrik   +2 more
openaire   +2 more sources

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