Results 31 to 40 of about 119,524 (265)

Momentum-Conserving Wake Superposition for Deep Wakes in the Dynamic Wake Meandering Model [PDF]

Journal of Physics: Conference Series
Abstract Accurate wake superposition is essential for time-domain wind-farm models operating in deep-wake conditions, such as aligned turbine rows. Conventional linear and root-sum-square superposition methods often fail to predict realistic power recovery and wake deficits in such configurations.
Steiner, Julia, Hodgson, Emily Louise; id_orcid 0000-0001-6443-2628, Forsting, Alexander Meyer; id_orcid 0000-0002-3133-1860, Réthoré, Pierre-Elouan Mikael; id_orcid 0000-0002-2300-5440   +3 more
openaire   +1 more source

The galactic wake model of the Magellanic Stream [PDF]

Symposium - International Astronomical Union, 1979
Tidal interaction models for the origin of the Magellanic Stream have been fairly successful in reproducing the radial velocities of the Stream (Lin and Lynden-Bell 1977, Davies and Wright 1977). However, no investigator has yet attained a self consistent treatment in which (1) the LMC and SMC are bound for at least 5×109 yr, (2) the passing Magellanic
openaire   +1 more source

Prediction of the Open-Water Performance of Ducted Propellers with a Panel Method

Journal of Marine Science and Engineering, 2018
In the present work, a comparison between the results obtained by a panel code with a Reynolds-averaged Navier-Stokes (RANS) code is made to obtain a better insight on the viscous effects of the ducted propeller and on the limitations of the inviscid ...
João Manuel Baltazar, Douwe Rijpkema, José Falcão de Campos, Johan Bosschers   +3 more
doaj   +1 more source

A mathematical model for a wake.

Michigan Mathematical Journal, 1984
A free boundary problem for a wake around an obstacle in a two dimensional incompressible, inviscid fluid flow has been considered. Sufficient conditions for the existence of wakes in doubly and simply connected starlike regions have been formulated.
openaire   +3 more sources

The vortex wake of a ‘hovering’ model hawkmoth

Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1997
Visualization experiments with Manduca sexta have revealed the presence of a leading–edge vortex and a highly three–dimensional flow pattern. To further investigate this important discovery, a scaled–up robotic insect was built (the ‘flapper’) which could mimic the complex movements of the ...
van den Berg, C., Ellington, C.P.
openaire   +3 more sources

A New Streamwise Scaling for Wind Turbine Wake Modeling in the Atmospheric Boundary Layer

Energies, 2022
In this study, we aim to investigate if there is a scaling of the streamwise distance from a wind turbine that leads to a collapse of the mean wake velocity deficit under different ambient turbulence levels.
Dara Vahidi, Fernando Porté-Agel
doaj   +1 more source

A New Study on the Effect of the Partial Wake Generated in a Wind Farm

Energies
In this article, we present an investigative study on the often-overlooked partial wake phenomenon in previous studies concerning wind farm configurations. A partial wake occurs when a portion of the actuator disk of a downstream wind turbine is affected
Said Zergane, Chouki Farsi, Salah Amroune, Souad Benkherbache, Noureddine Menasri   +4 more
doaj   +1 more source

On the Wind Turbine Wake Mathematical Modelling

Energy Procedia, 2018
Abstract The present paper deals with a study on the wind turbine wake mathematical modelling as well as experimental validation by means of wind tunnel experiments. In particular, different wind turbine wake’s equations were implemented and results compared with experimental data.
S. BRUSCA, R. LANZAFAME, F. FAMOSO, A. GALVAGNO, M. MESSINA, S. MAURO, M. PRESTIPINO   +6 more
openaire   +2 more sources

A simple model of wake capture aerodynamics

Journal of The Royal Society Interface, 2023
Flapping wings may encounter or ‘capture’ the wake from previous half-stroke, leading to local changes in the instantaneous aerodynamic force on the wing at the start of each half-stroke. In this paper, I developed a simple approach to integrating prediction of these wake capture effects into existing analytical quasi-steady models for hovering insect ...
openaire   +2 more sources

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source