Results 41 to 50 of about 11,503,776 (284)

Deformable Overset Grid for Unsteady Aerodynamic Simulation

open access: yes, 2016
A deformable overset grid method was proposed to simulate the unsteady aerodynamic problems with multiple flexible moving bodies. This method uses an unstructured overset grid locally coupled with mesh deformation to achieve both robustness and ...
Ning Qin   +7 more
core   +1 more source

Deformable Overset Grid for Multibody Unsteady Flow Simulation [PDF]

open access: yes, 2016
A deformable overset grid method is proposed to simulate the unsteady aerodynamic problems with multiple flexible moving bodies. This method uses an unstructured overset grid coupled with local mesh deformation to achieve both robustness and efficiency ...
Xiao, T., Qin, N., Deng, S., Luo, D.
core   +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

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

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

Numerical simulation of dynamic performance of trans-media unmanned vehicle during vertical take-off from water

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesThis paper aims to study the kinetic and dynamic characteristics of an trans-media unmanned vehicle during vertical take-off from water.MethodsIts dynamic performance during the trans-media process from water to air is numerically simulated on ...
Lei QIU, Chaosheng ZHENG
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

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

A combined implementation of overset grid and patched grid methodologies

open access: yes, 2017
The paper discusses the combined implementation of overset grid and patched grid methodologies and it’s testing for transonic and supersonic flows. The motivation is to make the grid generation process easier and less time consuming as well as having ...
Puttam, JK
core   +1 more source

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