Results 61 to 70 of about 3,519,058 (177)

Multi-Scale CFD Investigation of Viscous Scale Effects on Bulbous Bow Slamming Pressures and Full-Scale Extrapolation

Journal of Marine Science and Engineering
Predicting wave slamming pressures on bulbous bows is essential for ship structural safety. This study employs an overset-grid RANS-VOF framework to investigate viscous scale effects on bulbous bow slamming loads.
Quankai Xu, Junwei Cao, Ling Liu, Xiaoshun Yan, Jingxi Liu   +4 more
doaj   +1 more source

Energy Harvesting Characteristics and Effects of Structural Parameters of a Near-Surface 2-DOF Oscillating Foil

Journal of Marine Science and Engineering
In this study, the energy harvesting mechanism of a two-degree-of-freedom (2-DOF) oscillating foil under near-surface conditions and the underlying influence of structural parameters are systematically investigated.
Lixian Wang, Longyao Wang, Wei Hua, Taotao Tao, Zhengzhi Deng   +4 more
doaj   +1 more source

Computational Fluid Dynamic Analysis of a Floating Offshore Wind Turbine Experiencing Platform Pitching Motion

Energies, 2014
The objective of this study is to illustrate the unsteady aerodynamic effects of a floating offshore wind turbine experiencing the prescribed pitching motion of a supporting floating platform as a sine function.
Thanhtoan Tran, Donghyun Kim, Jinseop Song   +2 more
doaj   +1 more source

A user`s guide for BREAKUP: A computer code for parallelizing the overset grid approach [PDF]

, 1998
In this user`s guide, details for running BREAKUP are discussed. BREAKUP allows the widely used overset grid method to be run in a parallel computer environment to achieve faster run times for computational field simulations over complex geometries.
Barnette, D. W.
core   +1 more source

Dynamic stall characteristics of a rotor airfoil under coupled pitching-plunging motions

Kongqi donglixue xuebao
The blade of a helicopter rotor encounters plunging motion in addition to periodic pitching oscillations during actual flight, which complicates the flow field structure and dynamic stall characteristics.
Jiaqiang WU, Lang LI, Guoqiang LI, Juncheng SHEN, Jieru YU, Ruifeng CHEN   +5 more
doaj   +1 more source

LES of Internal Combustion Engine Flows Using Cartesian Overset Grids

Oil & Gas Science and Technology, 2017
Accurate computations of turbulent flows using the Large-Eddy Simulation (LES) technique with an appropriate SubFilter Scale (SFS) model require low artificial dissipation such that the physical energy cascade process is not perturbed by numerical ...
Falkenstein Tobias, Kang Seongwon, Davidovic Marco, Bode Mathis, Pitsch Heinz, Kamatsuchi Toshihiro, Nagao Junji, Arima Toshiyuki   +7 more
doaj   +1 more source

Numerical Investigation of Single and Double Steps in Planing Hulls

Journal of Marine Science and Engineering
Incorporating steps into a hull reduces the wetted surface, promoting improved hydrodynamic lift and reduced resistance at high speeds, provided that the step is designed appropriately.
Muhammad Sulman, Simone Mancini, Rasul Niazmand Bilandi   +2 more
doaj   +1 more source

Transient Simulation of Aerodynamic Load Variations on Carrier-Based Aircraft During Recovery in Carrier Airwake

Aerospace
Carrier-based aircraft recovery is a critical and challenging phase in maritime operations due to the turbulent airwake generated by aircraft carriers, which significantly increases the workload of flight control systems and pilots.
Xiaoxi Yang, Baokuan Li, Yang Nie, Zhibo Ren, Fangchao Tian   +4 more
doaj   +1 more source

Numerical Analysis of Roll Hydrodynamic Coefficients of 2D Triangular Cylinder Using OpenFOAM

Journal of Marine Science and Engineering
Predicting the roll damping coefficient of a ship is a crucial factor in determining the dynamic stability of the vessel. However, a nonlinear analysis that considers the viscosity of the fluid is required to accurately estimate the roll damping ...
Eunchong Hwang, Kyung-Kyu Yang
doaj   +1 more source

OVERGRID: A Unified Overset Grid Generation Graphical Interface

, 1999
This paper presents a unified graphical interface and gridding strategy for performing overset grid generation. The interface called OVERGRID has been specifically designed to follow an efficient overset gridding strategy, and contains general grid ...
Chan, William M., Akien, Edwin W.
core