Results 31 to 40 of about 12,359,623 (295)

An Integrated Dynamic Model and Optimized Fuzzy Controller for Path Tracking of Deep-Sea Mining Vehicle

open access: yesJournal of Marine Science and Engineering, 2021
The capability of path tracking largely determines the operational efficiency of deep-sea mining vehicles. In this paper, the relationships of vehicle–sediment mechanical interaction were obtained by sinkage and shear tests.
Yu Dai, Cong Xue, Qiao Su
doaj   +1 more source

Evaluation of the overset grid method for control studies of wave energy converters in OpenFOAM numerical wave tanks [PDF]

open access: yes, 2019
Computational fluid dynamics (CFD)-based numerical wave tanks are valuable tools for the development and evaluation of energy maximising control systems for wave energy converters (WECs).
Windt, Christian   +7 more
core   +1 more source

Two Dimensional Simulation of Laminar Flow Around Two Bodies in Relative Motion [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2012
In this paper an efficient dual time implicit approach is used to solve viscous laminar flow around two bodies with general motion. Therefore, the grid includes a background grid and two sets of grids around the moving bodies.
sahar noori, F. Mahdavi, S.M.H. Karimian
doaj  

CFD simulation of ship turning motion in waves

open access: yesZhongguo Jianchuan Yanjiu, 2019
[Objectives] The ship turning motion can reflect the steerability of the ship during navigation and is closely related to the ship navigation safety.[Methods] In this paper, the direct numerical simulation of the free turning motion of the standard ship ...
Wang Jianhua, Wan Decheng
doaj   +1 more source

Flows around moving bodies using a dynamic unstructured overset-grid method

open access: yes, 2010
Akay, Hasan U/0000-0003-2574-9942In this article, a computational fluid dynamics algorithm is presented for simulations of complex unsteady flows around rigid moving bodies using an unstructured overset-grid method.
Resat U. Payli   +7 more
core   +1 more source

A Parallel Solver on a Dynamically Adaptive Overset Grid for Compressible Flow Problems

open access: yesAerospace
The overset grid adaptive method offers an efficient approach for the computational modeling of steady or transient three-dimensional compressible flow problems.
Mohamad El Hajj Ali Barada, Bayram Celik
doaj   +1 more source

On the theoretical foundation of overset grid methods for hyperbolic problems: Well-posedness and conservation

open access: yesJournal of Computational Physics, 2022
We use the energy method to study the well-posedness of initial-boundary value problems approximated by overset mesh methods in one and two space dimensions for linear constant-coefficient hyperbolic systems. We show that in one space dimension, for both scalar equations and systems of equations, the problem where one domain partially oversets another ...
David A. Kopriva   +2 more
openaire   +5 more sources

Two-dimensional unsteady Navier-Stokes solution method with moving overset grids

open access: yes, 1997
A simple numerical algorithm to localize intergrid boundary points and to interpolate unsteady solution variables across two-dimensional, structured overset grids is presented. Overset grids are allowed to move in time relative to each other.
Tuncer, İSMAİL HAKKI
core   +2 more sources

Research on the forward flight performance of rotor based on variable-droop leading edge

open access: yesXibei Gongye Daxue Xuebao, 2021
Aiming at the dynamic stall phenomenon of the retreating side of the rotor in forward flight, the existing flow control method of dynamic leading edge droop was applied to the flow control of forward-flying rotor at three-dimensional scale.

doaj   +1 more source

A parallel dynamic overset grid framework for immersed boundary methods

open access: yesCoRR, 2019
A parallel dynamic overset framework has been developed for the curvilinear immersed boundary (overset-CURVIB) method to enable tackling a wide range of challenging flow problems. The dynamic overset grids are used to locally increase the grid resolution near complex immersed bodies, which are handled using a sharp interface immersed boundary method ...
Mohammadali Hedayat, Iman Borazjani
openaire   +3 more sources

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