... ABSTRACT For the purpose of studying the feasibility of deep-sea vehicles with damping plate deceleration mechanism achieving a safe water-exit velocity, the hydrodynamic coefficients of body and mathematical model of the damping plate deceleration mechanism are estimated by using...

... ABSTRACT Accurate prediction of the structural response of flexible cylinder vortex-induced vibrations (VIVs) relies heavily on the accuracy of the acquired hydrodynamic coefficient database. Due to a large number of variables, the construction of systematic hydrodynamic databases from rigid...

... are hard to control, so an integrated and easily controlled SUV is needed. upstream oil & gas simulation hydrodynamic coefficient motion stability artificial intelligence stability motion test submarine suv coefficient underwater vehicle coordinate system rotation plane tank curve...

... motions has been studied based on linear hydrodynamic equations, time series prediction models, and machine learning models (Ferrandis, et al., 2019; Liu et al., 2020). The prediction of the linear hydrodynamic equation is difficult to estimate the ship hydrodynamic coefficients that are time-varying...

... to improve the technology level of marine resources development and utilization and marine engineering infrastructure. artificial intelligence waterproof joint motor zhejiang university upstream oil & gas university pipeline manipulator operation coefficient hang zhou 5-function...

... ABSTRACT This paper investigates the flow through and around a square array of cylinders. The investigations were performed numerically by RANS simulation with kω-SST turbulent model using OpenFoam. The effects of volume fraction on the drag coefficient have not been studied completely yet...

...-amplitude operators of lateral acceleration by different numerical models are compared with model tests results. The results show that the critical damping coefficient has the greatest influence on the calculation accuracy of roll motion and lateral acceleration. The reduction of ship's degree-of-freedom...

... of the three icebergs, aerial photography of the above water and sonar survey of the underwater parts were carried out, which made it possible to build their 3D models and perform numerical simulation of their hydrodynamic parameters. Drag coefficients (for steady movement) and added mass (for accelerated...

... for suppressing non-realistic high wave elevation between two floating barges in close proximity. The Damping Lid coefficient is determined through comparing the wave elevation between CFD and BEM results. It is found that the Damping Lid coefficient is sensitive to the wave height and directions. Furthermore...

... and full scale for wind headings from 0 to 360 degrees. The wind load in the form of coefficients of three force components and three moment components are in good agreement between numerical prediction and experimental measurements. In addition, we measured surface pressures at 22 different locations...

...-edge tubercles. The numerical simulations were performed at Re=450000. The detached eddy simulations were performed to study the unsteady characteristics of finite-span wings at different angle of attack. The performance coefficients of wing and pressure fluctuations downstream the wing were compared...

... upstream oil & gas model test engineering wave frequency drilling equipment time domain analysis prediction water surface frequency domain analysis viscous drag maxima upwell extreme airgap prediction semisubmersible coefficient Proceedings of the Thirty-second (2022) International...

... and Monte Carlo method, and used three sets of leeway coefficients to predict the drift trajectory of the target for 500 days. The prediction results are generally consistent with the results of surface drift buoy trajectory analysis, indicating that the performance of the drift trajectory prediction model...

... theoretical result model iii coefficient slender body geometry submarine free surface spheroid trim angle kozin formula ice cover submergence depth lift force magnitude length-to-diameter ratio Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference...

... papanikolaou froude number 0 ittc boundary value problem ship simonsen coefficient green function ship motion equation rao irspeed 0 marine transportation forward speed exp forward speed correction frequency domain ABSTRACT This paper describes the development...

..., the bottom structure of the boat will be damaged or even broken under the action of enormous wave impact load in the whole boat range. upstream oil & gas impact load characteristic coefficient modeling & simulation calculation numerical simulation method high-speed craft test result...

... reservoir characterization experiment weakly nonlinear time-domain model coefficient frequency time-domain model case 2 upstream oil & gas amplitude wave height ship speed engineering parametric roll containership roll amplitude green function method ship parametric roll...

... on the mattress through physical experiments. experiment artificial mattress drag force coefficient upstream oil & gas boundary layer subsea system bed surface experimental data concrete block engineering shear stress hydrodynamic drag prism empirical formula measurement method wave...

... production storage & offloading ship platform design floating production system freight & logistics services hull form case-a subsea system initial hull marine transportation fpso case-b resistance level ice full scale water condition minimum power efficiency coefficient polar ship...

... ABSTRACT This study is to investigate the wave effect on ship manoeuvring coefficients by carrying out a series of PMM tests under waves. The static drift test at different drift conditions and the dynamic PMM test at different motion frequencies have been carried out, and three regular waves...