Results 41 to 50 of about 706,134 (292)

Grid related issues for static and dynamic geometry problems using systems of overset structured grids [PDF]

open access: yes, 1995
Grid related issues of the Chimera overset grid method are discussed in the context of a method of solution and analysis of unsteady three-dimensional viscous flows.
Meakin, Robert L.
core  

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

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

open access: yesEnergies, 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   +2 more
doaj   +1 more source

Numerical calculation and analysis of resistance performance of planing craft combining Savitsky method and overset grid technology

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveIn this paper, the hydrostatic resistance of a planing craft is studied using the high-precision numerical simulation method to improve the numerical prediction accuracy. MethodsThe three-dimensional viscous flow field of a planing craft in calm
Jun GUO   +5 more
doaj   +1 more source

Sticker Valence Governs Chain Collapse and Liquid‐Liquid Phase Separation in Peptide‐Inspired Associative Polymers

open access: yesAdvanced Science, EarlyView.
Peptide‐inspired associative polymers with arginine‐like guanidinium stickers and lysine‐like ammonium spacers undergo chain collapse and liquid‐liquid phase separation induced by reversible sticker associations. Sticker valence and tunable association strength jointly control the phase behavior, chain conformation, and interfacial cohesion of these ...
Seung‐Hwan Oh   +7 more
wiley   +1 more source

Performance of Overset Mesh in Modeling the Wake of Sharp-Edge Bodies

open access: yesComputation, 2020
The wake dynamics of sharp-edge rigid panels is examined using Overset Grid Assembly (OGA) utilized in OpenFOAM, an open-source platform. The OGA method is an efficient solution technique based on overlap of a single or multiple moving grids on a ...
Suyash Verma, Arman Hemmati
doaj   +1 more source

Investigation of Aeroelasticity Effect on Missile Separation from the Internal Bay

open access: yesInternational Journal of Aerospace Engineering, 2023
There is a strong aerodynamic interference when launching the missile in the embedded mode. During the separation process, the carrier aircraft safety may be threatened due to large slenderness ratio, low structural stiffness, and aeroelasticity effects ...
Shuling Tian, Rongjie Li, Ke Xu
doaj   +1 more source

Numerical Simulation and PIV Experimental Investigation on Underwater Autorotating Rotor

open access: yesAerospace, 2022
In this work, the flow field of an autorotating rotor in a water tunnel with various pitches and shaft backward angles was investigated via particle image velocimetry (PIV).
Liang Li   +4 more
doaj   +1 more source

Defect‐Symmetry Engineered Gyroidal Photonic Crystals Achieve Monotonic Modulation of Bandgap Width With a Stable Mid‐Gap

open access: yesAdvanced Science, EarlyView.
Inspired by the twin grain boundary discovered in natural gyroidal networks, a series of gyroid‐derived photonic crystals are constructed based on defect‐symmetry engineering. The new series of structures enables monotonic tuning of the width of the photonic bandgap (PBG) while the central frequency of the PBG maintains stable.
Shuo Huang   +5 more
wiley   +1 more source

Numerical Simulation of the Unsteady Airwake of the Liaoning Carrier Based on the DDES Model Coupled with Overset Grid

open access: yesJournal of Marine Science and Engineering
The wake behind an aircraft carrier under heavy wind condition is a key concern in ship design. The Chinese Liaoning ship’s upturned bow and the island on the deck could cause serious flow separation in the landing and take-off area.
Xiaoxi Yang   +3 more
doaj   +1 more source

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