Results 41 to 50 of about 12,359,623 (295)

Influence of seabed sand wave on hydrodynamic performance of submersible

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThis paper studies the hydrodynamic characteristics of submersible under the interference of seabed sand wave topography. MethodsBased on the computational fluid dynamics (CFD) method, the process of submersible passing above a seabed sand wave
Peng LI   +3 more
doaj   +1 more source

Simulation of zigzag maneuver and flow field characteristics for full-scale ship

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveIn order to forecast a ship's maneuverability more realistically, it is necessary to conduct the direct simulation of the full-scale ship's maneuver.
Nan JI   +3 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

A numerical study on ship-ship interaction in shallow and restricted waterway

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2015
In the present study, a numerical prediction method on the hydrodynamic interaction force and moment between two ships in shallow and restricted waterway is presented. Especially, the present study proposes a methodology to overcome the limitation of the
Sungwook Lee
doaj   +1 more source

A Modified Fifth-Order WENO-HLLC Riemann Solver for Transonic Viscous Flows around Helicopter Rotor in Hover

open access: yesShock and Vibration, 2022
This paper presents a modified fifth-order WENO-HLLC Riemann solver for the transonic compressible viscous flows around the helicopter rotor in hover. The HLLC approximate Riemann solver is proposed to discrete the convection term involving grid velocity
Li Xu, Fengfeng Zhao, Jingjing Cai
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

open access: yesAdvanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa   +19 more
wiley   +1 more source

A stabilized finite element dynamic overset method for the Navier-Stokes equations [PDF]

open access: yes, 2016
In terms of mesh resolution requirements, higher-order finite element discretization methods offer a more economic means of obtaining accurate simulations and/or to resolve physics at scales not possible with lower-order schemes. For simulations that may
Liu, Chao
core   +3 more sources

Simulation of an Isolated Tiltrotor in Hover with an Unstructured Overset-Grid RANS Solver [PDF]

open access: yes, 2009
An unstructured overset-grid Reynolds Averaged Navier-Stokes (RANS) solver, FUN3D, is used to simulate an isolated tiltrotor in hover. An overview of the computational method is presented as well as the details of the overset-grid systems.
Lee-Rausch, Elizabeth M.   +1 more
core   +2 more sources

Prediction of Resistance and Planing Attitude for Prismatic Planing Hull using OpenFOAM [PDF]

open access: yes한국해양공학회지, 2019
The prediction of the hydrodynamic performance of a planing hull vessel is an important and challenging topic for computational fluid dynamic (CFD) applications to naval hydrodynamics.
XiangYu Shi, Yang Zhang, Deuk-joon Yum
doaj   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

open access: yesAdvanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

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