Results 21 to 30 of about 16,922,350 (282)
Flow, 2023 The importance of buoyancy relative to free-stream flow is described using an adapted Froude number $Fr' = U/f_0^{1/3}$, where $U$ is the flow speed and $f_0$ is the exhaust buoyancy flux per unit length.
Samuel Charlwood +2 more
doaj +1 more source
Vortex model of the aerodynamic wake of airborne wind energy systems [PDF]
Wind Energy Science, 2023 Understanding and modeling the aerodynamic wake of airborne wind energy systems (AWESs) is crucial for estimating the performance and defining the design of such systems, as tight trajectories increase induced velocities and thus decrease the available ...
F. Trevisi, C. E. D. Riboldi, A. Croce
doaj +1 more source
Journal of Physics: Conference Series, 2015 This paper presents a simple physical model to improve the currently used far-wake deficit models in the wind industry. The main improvement is deemed on the determination of the wake deficit in the near-wake. A Vortex Ring Model (VRM) is used to calculate the induced velocities in the near-wake, which are then coupled to the Jensen far-wake model and ...
Van Heemst, J.W. (author) +3 more
openaire +3 more sources
Predicting the wake structure of the HART II rotor using the vorticity transport model [PDF]
, 2008 Brown’s Vorticity Transport Model has been used to predict the wake structure and resultant blade loading of the rotor that was studied during the HART II experimental programme. The descending flight condition of the experiment yields significant high-
Kelly, Mary E. +3 more
core +7 more sources
Direct numerical simulation of heat transfer from the stagnation region of a heated cylinder affected by an impinging wake [PDF]
, 2011 Copyright © 2011 Cambridge University Press.The effect of an incoming wake on the flow around and heat transfer from the stagnation region of a circular cylinder was studied using direct numerical simulations (DNSs).
Rodi, W +3 more
core +1 more source
Aircraft Wake-Vortex Evolution in Ground Proximity: Analysis and Parameterization [PDF]
, 2006 Field measurement data of 282 wake vortex pairs and respective environmental conditions acquired at Frankfurt Airport by means of lidar, Sodar/RASS, and ultrasonic anemometer are used to analyze wake vortex behavior in ground proximity. Exceptional cases
Steen, Meiko +3 more
core +1 more source
Wake flow past a submerged plate near a free surface
European Journal of Applied MathematicsA wake model is pursued for potential flow past a submerged, finite-length plate that is perpendicular to a uniform, horizontal stream bounded above by a free surface. The effects of gravity are included along the free surface.
E. McLean +2 more
doaj +1 more source
Ground effect on a rotor wake. [PDF]
, 1985 The effect of the ground on a rotor wake in forward flight has been investigated experimentally in the working section of an 8ft x Oft straight-through wind tunnel.
Kusmarwanto, I.
core +5 more sources
Energies, 2019 The second part of this work describes a wind turbine Computational Fluid Dynamics (CFD) simulation capable of modeling wake effects. The work is intended to establish a computational framework from which to investigate wind farm layout.
Rafael V. Rodrigues, Corinne Lengsfeld
doaj +1 more source
Optimal closed-loop wake steering – Part 1: Conventionally neutral atmospheric boundary layer conditions [PDF]
Wind Energy Science, 2020 Strategies for wake loss mitigation through the use of dynamic closed-loop wake steering are investigated using large eddy simulations of conventionally neutral atmospheric boundary layer conditions in which the neutral boundary layer is capped by an ...
M. F. Howland +5 more
doaj +1 more source