Results 1 to 10 of about 20,748 (263)
Applied Sciences, 2023 Maneuverability is one of the submarine’s most important features, and is closely related to hydrodynamic coefficients. The submarine standard motion equation is the most commonly used hydrodynamic mathematical model, estimating more than 100 ...
Guo Xiang +4 more
doaj +3 more sources
Journal of Marine Science and Engineering, 2021 In this study, physical model tests are used to investigate the effects of a varying number of wave and current parameters, the gap ratios between the pipeline and seabed, the spacing ratios between the two pipelines and the diameter ratios on the ...
Xiaofei Cheng +3 more
doaj +3 more sources
International 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 +3 more sources
Dynamics Modeling and Hydrodynamic Coefficients Identification of the Wave Glider
Journal of Marine Science and Engineering, 2022 The wave glider is an ocean-wave-propelled autonomous marine vehicle with unique dual-body architecture, which can converse the energy obtained from the ocean wave into the forward thrust.
Xiujun Sun +3 more
doaj +3 more sources
Hydrodynamic Coefficients for Various Postures of the Underwater Manipulator [PDF]
Journal of Applied Fluid Mechanics, 2023 The hydrodynamic coefficients of underwater manipulators constantly change during their operation. In this study, the hydrodynamic coefficients of an underwater manipulator were calculated using the finite volume method to better explain its hydrodynamic
D. Duan +5 more
doaj +1 more source
A SR-UKF-based method to identify submarine hydrodynamic coefficients
Zhongguo Jianchuan Yanjiu, 2021 ObjectivesThe square root unscented Kalman filter (SR-UKF) algorithm was developed for the identification of hydrodynamic coefficients, which are difficult to obtain accurately in submarine motion models.MethodsFirstly, the hydrodynamic coefficients ...
Bangjun LYU, Bin HUANG, Likun PENG
doaj +1 more source
Estimating Hydrodynamic Coefficients of Real Ships Using AIS Data and Support Vector Regression
한국해양공학회지, 2023 In response to the complexity and time demands of conventional methods for estimating the hydrodynamic coefficients, this study aims to revolutionize ship maneuvering analysis by utilizing automatic identification system (AIS) data and the Support Vector
Hoang Thien Vu +2 more
doaj +1 more source
Computational prediction of hydrodynamic coefficients for heave motion [PDF]
Seatific Engineering Research Journal, 2021 In this study, the hydrodynamic coefficients associated with heave motion are obtained by using unsteady Reynolds-averaged Navier-Stokes (URANS) approach. The well-known Wigley hull is selected for the calculations of uncoupled added mass and damping coefficients (A33, B33) in deep water.
ÇAKICI, Ferdi +3 more
openaire +3 more sources
Do Hydrodynamic Dispersion Coefficients Exist? [PDF]
Physical Review Letters, 1996 Tracer dispersion is the simplest example of the flow of an inhomogeneous two-component mixture. We assume that the two components, the “tracer” and the “solvent,” have identical behavior but are distinguishable in the sense that they are assigned different “colors.” The model may be simple, but it is neither trivial nor irrelevant.
Lowe, C.P. (author) +1 more
openaire +4 more sources
Kubo Formulas for Second-Order Hydrodynamic Coefficients [PDF]
Physical Review Letters, 2011 At second order in gradients, conformal relativistic hydrodynamics depends on the viscosity eta and on five additional "second-order" hydrodynamical coefficients tauPi, kappa, lambda1, lambda2, and lambda3. We derive Kubo relations for these coefficients, relating them to equilibrium, fully retarded 3-point correlation functions of the stress tensor ...
Moore, Guy D., Sohrabi, Kiyoumars A.
openaire +3 more sources