Results 11 to 20 of about 204,536 (265)

Mechanism of heat transportation in the intermediate wake of a heated cylinder

open access: yesNihon Kikai Gakkai ronbunshu, 2020
The paper clarifies the effects of buoyancy on the mechanism of heat transfer in the wake of heated cylinder for X/D=5-40. Measurements are made by a thermo-anemometer.
Hideaki WATANABE   +2 more
doaj   +1 more source

Investigation on Thrust Characteristics of a Downstream Offshore Floating Wind Turbine under Yawed Inflow Conditions

open access: yesJournal of Marine Science and Engineering, 2021
In the natural marine environment, offshore floating wind turbines (OFWTs) inevitably experience yawed inflow conditions, which will make their aerodynamics more complicated than those experiencing uniform inflow conditions and difficult to understand ...
Yangwei Wang   +3 more
doaj   +1 more source

Hydrodynamic Forces and Wake Distribution of Various Ship Shapes Calculated Using a Reynolds Stress Model

open access: yesJournal of Marine Science and Engineering, 2022
The Reynolds-averaged Navier–Stokes (RANS)-based computational fluid dynamics (CFD) calculation using a two-equation turbulence model, such as the k–omega shear-stress transport (SST) model, is a mainstream method with sufficient accuracy for the ...
Satoshi Matsuda, Tokihiro Katsui
doaj   +1 more source

Propagation Characteristics of Modulated EHF Signal in the Wake Region of Plasma Sheath

open access: yesAerospace, 2022
A large number of studies have confirmed that the wake region may be a more ideal antenna installation area for the reentry vehicle communication problem, but many practical issues such as how to choose the modulation mode, carrier frequency, and antenna
Xiaocui Yang   +4 more
doaj   +1 more source

Experimental Study on Influence of Pitch Motion on the Wake of a Floating Wind Turbine Model

open access: yesEnergies, 2014
Wind tunnel experiments were performed, where the development of the wake of a model wind turbine was measured using stereo Particle Image Velocimetry to observe the influence of platform pitch motion.
Stanislav Rockel   +5 more
doaj   +1 more source

CFD Analysis of Biofouling Effect on Submarine Resistance and Wake

open access: yesJournal of Marine Science and Engineering, 2023
It is well known that biofouling increases a ship’s resistance and nominal wake. For submarines, any change to the circumferential variation of the nominal wake in the propeller plane will affect the variation of the flow over the propeller blade, and ...
I Ketut Aria Pria Utama   +4 more
doaj   +1 more source

Towards a Simplified DynamicWake Model Using POD Analysis

open access: yesEnergies, 2015
We apply a modified proper orthogonal decomposition (POD) to large eddy simulation data of a wind turbine wake in a turbulent atmospheric boundary layer. The turbine is modeled as an actuator disk.
David Bastine   +3 more
doaj   +1 more source

Disease and degeneration of aging neural systems that integrate sleep drive and circadian oscillations

open access: yesFrontiers in Neurology, 2011
Sleep and circadian activity rhythms become irregular with age which are characterized by fragmented sleep during the night and increased daytime sleepiness.
Kris eSingletary, Nirinjini eNaidoo
doaj   +1 more source

Self-similarity Characteristics of Vertical Axis Wind Turbine Wakes [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Wake generated by wind turbine can greatly influence the performance of downstream turbine. To better understand the wake self-similarity characteristics of vertical axis wind turbine (VAWT), the shear stress transport (SST) turbulence model with the ...
X. Y. Zhang   +5 more
doaj   +1 more source

Formation Flight of Fixed-Wing UAVs: Dynamic Modeling, Guidance Design, and Testing in Realistic Scenarios

open access: yesAerospace
Autonomous unmanned flight based on fixed-wing aircraft constitutes a practical and economical solution for transport missions to remote destinations or disadvantaged communities, for which their payload and range represent interesting figures of merit ...
Carlo E.D. Riboldi, Marco Tomasoni
doaj   +1 more source

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