Results 71 to 80 of about 221,361 (152)

Calculation of the Coherent Synchrotron Radiation Impedance from a Wiggler

, 2003
Most studies of Coherent Synchrotron Radiation (CSR) have only considered the radiation from independent dipole magnets. However, in the damping rings of future linear colliders, a large fraction of the radiation power will be emitted in damping wigglers.
A. Faltens, A. W. Chao, B. Podobedov, D. F. Alferov, D. F. Alferov, E. L. Saldin, G. Stupakov, Gennady V. Stupakov, J. B. Murphy, J. B. Murphy, J. M. Byrd, Juhao Wu, K.-Y. Ng, R. Li, R. L. Warnock, S. Kramer, S. Krinsky, T. O. Raubenheimer, Tor O. Raubenheimer, Y.-H. Chin   +19 more
core   +2 more sources

Potential of Wake Scaling Techniques for Vertical-Axis Wind Turbine Wake Prediction

Energies
Analytical wake models are widely used to predict wind turbine wakes. While these models are well-established for horizontal-axis wind turbines (HAWTs), the analytical wake models for vertical-axis wind turbines (VAWTs) remain under-explored in the wind ...
Dara Vahidi, Fernando Porté-Agel
doaj   +1 more source

Additional experiments with a four-bladed cyclic pitch stirring model rotor, part 2 of second yearly report [PDF]

The four bladed pitch stirring rotor model was used in a rotor dynamic wake survey at zero advance ratio, covering 2 deg, 5 deg and 8 deg collective pitch settings.
Crews, S. T., Hohenemser, K. H.
core   +1 more source

Downwind rotor horizontal axis wind turbine noise prediction [PDF]

, 1981
NASA and industry are currently cooperating in the conduct of extensive experimental and analytical studies to understand and predict the noise of large, horizontal axis wind turbines.
Klatte, R. J., Metzger, F. B.
core   +1 more source

Influence of vane sweep on rotor-stator interaction noise [PDF]

The influence of vane sweep in rotor-stator interaction noise is investigated. In an analytical approach, the interaction of a convected gust representing the rotor viscous wake, with a cascade of cascade of finite span swept airfoils, representing the ...
Envia, Edmane, Kerschen, Edward J.
core   +1 more source

Advanced propeller aerodynamic analysis [PDF]

, 1980
The analytical approaches as well as the capabilities of three advanced analyses for predicting propeller aerodynamic performance are presented. It is shown that two of these analyses use a lifting line representation for the propeller blades, and the ...
Bober, L. J.
core   +1 more source

Binary pulsars as dark-matter probes

, 2015
During the motion of a binary pulsar around the Galactic center, the pulsar and its companion experience a wind of dark-matter particles that can affect the orbital motion through dynamical friction.
Pani, Paolo
core   +1 more source

Predicting wind farm wake losses with deep convolutional hierarchical encoder–decoder neural networks

APL Machine Learning
Wind turbine wakes are the most significant factor affecting wind farm performance, decreasing energy production and increasing fatigue loads in downstream turbines.
David A. Romero, Saeede Hasanpoor, Enrico G. A. Antonini, Cristina H. Amon   +3 more
doaj   +1 more source

High Gradient Superconducting Cavity with Low Surface EM Fields and Well-Suppressed HOMS for the ILC

, 2010
We present an optimized geometry for a 1.3 GHz superconducting cavity in which the surface electromagnetic fields have been minimized and the bandwidth of the fundamental mode has been maximized. We refer to this design as the New Low Surface Field (NLSF)
Jones, R. M., Juntong, N.
core  

Advances and Challenges in Analytical Wake Modelling for Offshore Wind Farm Layout Optimization

Energies
Wakes generated by upstream turbines in an offshore wind farm severely reduce the efficiency and power output of downstream turbines. Wind farm layout optimization offers a way to alleviate these negative impacts, where the main challenge lies in ...
Haixiao Liu, Zhichang Liang, Yunxuan Zhao, Xinru Guo   +3 more
doaj   +1 more source