Results 71 to 80 of about 2,147 (222)
National Policy Coherence Counts for Reducing Inequality in Global Climate and Development Agendas
Sustainable Development, EarlyView.ABSTRACT International institutions promote policy coherence as crucial to the effective and fair implementation of global sustainability agendas, though the evidence for its benefits is slim. We present here the first systematic cross‐country dataset on the consequences of national government efforts to promote policy coherence for vulnerable groups ...
Katherine Browne +10 more
wiley +1 more source
Shaping array design of marine current energy converters through scaled experimental analysis [PDF]
, 2013 Marine current energy converters or tidal turbines represent an emerging renewable energy technology that can provide a predictable supply of electricity.
Myers, L.E. +3 more
core +1 more source
Energies, 2013 In this study, large-eddy simulations (LESs) were performed to investigate the effects of changing wind direction on the turbine wakes and associated power losses in the Horns Rev offshore wind farm.
Fernando Porté-Agel +2 more
doaj +1 more source
Power and Flow Analysis of Axial Induction Control in an Array of Model-Scale Wind Turbines
Energies, 2022 As research on wind energy has progressed, it has broadened from a focus on the wind turbine to include the entire wind farm. In particular, methods to mitigate the negative effects of upstream wakes on downstream turbines have received significant ...
Daniel Houck, Edwin A. Cowen
doaj +1 more source
Wind tunnel investigation on the effect of the turbine tower on wind turbines wake symmetry
Wind Energy, 2017 AbstractIn wind farms, the wake of the upstream turbines becomes the inflow for the downstream machines. Ideally, the turbine wake is a stable vortex system. In reality, because of factors like background turbulence, mean flow shear, and tower‐wake interaction, the wake velocity deficit is not symmetric and is displaced away from its mean position. The
Fabio Pierella, Lars Sætran
openaire +2 more sources
Wildlife Biology, EarlyView.Renewable energy is vital for reducing carbon emissions and yet its infrastructure poses challenges to biodiversity. While the impacts of wind power on bats and raptors are well‐studied, the effects on elusive species remain largely unknown. The Eurasian woodcock Scolopax rusticola, a nocturnal forest bird, performs characteristic courtship flights at ...
Jan O. Engler +6 more
wiley +1 more source
Simulating wind turbine interactions using the vorticity transport equations [PDF]
, 2009 The aerodynamic interactions that can occur within a wind farm result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Fletcher, Timothy M., Brown, R.E.
core
Wind Farm Loads under Wake Redirection Control
Energies, 2020 Active wake control (AWC) is a strategy for operating wind farms in such a way as to reduce the wake effects on the wind turbines, potentially increasing the overall power production. There are two concepts to AWC: induction control and wake redirection.
Stoyan Kanev, Edwin Bot, Jack Giles
doaj +1 more source
Multi‐Strategy Synergy‐Based Differential Evolution for Large Wind Farm Layout Optimization
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Exploring clean energy alternatives to fossil fuels has become a major research focus worldwide. Wind energy is regarded as one of the most promising renewable energy sources due to its clean and sustainable nature. However, wake interactions among turbines significantly reduce power conversion efficiency, making wind farm layout optimization (
Haotian Li +5 more
wiley +1 more source
Wind Turbine Wakes in Directionally Varying Wind Shears [PDF]
, 2019 In the atmospheric boundary layer, the Coriolis force associated with the Earth’s rotation induces a spanwise wind shear in addition to the wall-normal one leading to a continuous change in wind direction with height.
Sørensen, Jens +6 more
core +1 more source