Results 31 to 40 of about 221,361 (152)

Nonlinear aeroelastic modeling via conformal mapping and vortex method for a flat-plate airfoil in arbitrary motion [PDF]

open access: yes, 2016
A nonlinear aerodynamic modeling based on conformal mapping is presented to obtain semi-analytical formulas for the unsteady aerodynamic force and pitching moment on a flat-plate airfoil in arbitrary motion.
Mastroddi, Franco   +2 more
core   +1 more source

Characterization of Wind Turbine Wakes with Nacelle-Mounted Doppler LiDARs and Model Validation in the Presence of Wind Veer

open access: yesRemote Sensing, 2019
Accurate prediction of wind turbine wakes is important for more efficient design and operation of wind parks. Volumetric wake measurements of nacelle-mounted Doppler lidars are used to characterize the wake of a full-scale wind turbine and to validate an
Peter Brugger   +4 more
doaj   +1 more source

Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source [PDF]

open access: yes, 2017
The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, %a corrugated structure in flat geometry, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS).
Bane, Karl   +13 more
core   +5 more sources

Determination of Wind Turbine Near-Wake Length Based on Stability Analysis [PDF]

open access: yes, 2014
A numerical study on the wake behind a wind turbine is carried outfocusing on determining the length of the near-wake based on the instability onset ofthe trailing tip vortices shed from the turbine blades.
Alfredsson   +13 more
core   +1 more source

A double-Gaussian wake model considering yaw misalignment

open access: yesInternational Journal of Renewable Energy Development
A wake steering has been known to effectively increase wind farm production by deflecting the upstream turbines’ wakes via yaw misalignment, thus minimizing their negative impacts on the downstream turbines' performances.
Qidun Maulana Binu Soesanto   +2 more
doaj   +1 more source

Dynamics of the wakefield of a multi-petawatt, femtosecond laser pulse in a configuration with ultrarelativistic electrons [PDF]

open access: yes, 2014
The wake field excitation in an unmagnetized plasma by a multi-petawatt, femtosecond, pancake-shaped laser pulse is described both analytically and numerically in the regime with ultrarelativistic electron jitter velocities, when the plasma electrons are
Belic, M., Fedele, R., Jovanovic, D.
core   +3 more sources

Wake steering of multirotor wind turbines

open access: yesWind Energy, 2021
In this paper, wake steering is applied to multirotor turbines to determine whether it has the potential to reduce wind plant wake losses. Through application of rotor yaw to multirotor turbines, a new degree of freedom is introduced to wind farm control
Gustav A. Speakman   +3 more
doaj   +1 more source

Metastability of solitary roll wave solutions of the St. Venant equations with viscosity [PDF]

open access: yes, 2010
We study by a combination of numerical and analytical Evans function techniques the stability of solitary wave solutions of the St. Venant equations for viscous shallow-water flow down an incline, and related models.
Alexander   +51 more
core   +2 more sources

Short-range wakefields in an L-shaped corrugated structure

open access: yesPhysical Review Accelerators and Beams, 2023
We present analytical and numerical studies of short-range wakefields in an L-shaped corrugated structure. This structure has variable streaking polarization and the quadrupole wakefield component is suppressed when the beam moves with equal distances to
Weilun Qin   +2 more
doaj   +1 more source

Protons in the near-lunar wake observed by the Sub-keV Atom Reflection Analyzer on board Chandrayaan-1 [PDF]

open access: yes, 2010
Significant proton fluxes were detected in the near wake region of the Moon by an ion mass spectrometer on board Chandrayaan-1. The energy of these nightside protons is slightly higher than the energy of the solar wind protons.
A. Bhardwaj   +34 more
core   +2 more sources

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