Results 121 to 130 of about 142,074 (316)

Individual Wake Vortex Separations: Capacity and Delay Impact on Single and Dual Dependent Runway Systems

, 2012
Airport capacity constraints and growing traffic demand in air transportation cause congestion and delay on the ground and in the air. Conservative wake turbulence separation minima in the approach phase guarantee a minimum of in-flight wake encounters ...
Lorenz, Sandro, Lau, Alexander, Holzäpfel, Frank   +2 more
core  

Aircraft Wake Vortex Decay in Ground Proximity : Physical Mechanisms and Artificial Enhancement

, 2012
Aircraft wake vortex evolution in ground proximity is investigated numerically with large eddy simulations (LES). The simulations are performed with different modifications of the ground surface in order to trigger rapid vortex decay or to simulate the ...
Anton Stephan, Misaka, Takashi, Frank Holzäpfel, Takashi Misaka, Holzäpfel, Frank, Stephan, Anton   +5 more
core   +1 more source

Rapid Estimation Model for Wake Disturbances in Offshore Floating Wind Turbines

Journal of Marine Science and Engineering
The precise wake model is crucial for accurately estimating wind farm loads and power, playing a key role in wake control within wind farms. This study proposes a segmented dual-Gaussian wake model, which is built upon existing dual-Gaussian wake models ...
Liye Zhao, Yongxiang Gong, Zhiqian Li, Jundong Wang, Lei Xue, Yu Xue   +5 more
doaj   +1 more source

Modelling turbulence in axisymmetric wakes: an application to wind turbine wakes

Journal of Fluid Mechanics
A novel fast-running model is developed to predict the three-dimensional (3-D) distribution of turbulent kinetic energy (TKE) in axisymmetric wake flows. This is achieved by mathematically solving the partial differential equation of the TKE transport using the Green's function method.
Majid Bastankhah, Jenna K. Zunder, Peter E. Hydon, Charles Deebank, Marco Placidi   +4 more
openaire   +5 more sources

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

A NEW WAKE OSCILLATOR MODEL FOR PREDICTING VORTEX INDUCED VIBRATION OF A CIRCULAR CYLINDER [PDF]

, 2010
This article proposes a new wake oscillator model for vortex induced vibrations of an elastically supported rigid circular cylinder in a uniform current.
Xu WH(徐万海), Zeng XH(曾晓辉), Zeng Xiaohui, Xu Wanhai, Yu Jianxing, Wu YX(吴应湘), Yu JX, Xu WH, Wu Yingxiang, Zhong Xingfu, Zhong XF(钟兴福)   +10 more
core   +1 more source

Ultrathin Li Metal Anodes: Quantitative Design Principles and Manufacturability Across Liquid and Solid‐State Batteries

Advanced Materials, EarlyView.
Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang, Caoyu Wang, Shuixin Xia, Jodie A. Yuwono, Mingnan Li, Yanqiu Lyu, Ruizhi Zhang, Jun Wang, Jianfeng Mao, Zaiping Guo   +9 more
wiley   +1 more source

Prediction of dynamic pairwise wake vortex separations for approach and landing

, 2012
Design and performance of the Wake Vortex Prediction and Monitoring System WSVBS are described. The WSVBS has been developed to tactically increase airport capacity for approach and landing on single runways as well as closely-spaced parallel runways. It
Schwarz, Carsten, Holzäpfel, Frank, Dengler, Klaus, Gerz, Thomas   +3 more
core  

All‐Polyimide‐Mediated Liquid Metal Assembly on Aerogels for Breathable and Robust Electronic Skins

Advanced Materials, EarlyView.
An all‐polyimide‐mediated assembly strategy resolves the fundamental conflict between physiological breathability and electromechanical robustness in wearable electronics. By integrating a polyamic acid‐encapsulated liquid metal ink onto an ultralight polyimide aerogel, imidization‐induced contraction enables low‐temperature conductive activation and ...
Haijun Zhu, Jiancheng Dong, Hao Qiu, Je Hyeong Kim, Xingyu Liu, Shiyin Lin, Mengting Zheng, Chang Zhou, Yuduo Zhang, Jiayu Hou, Kangjia Geng, Yuchen Wang, Yidong Peng, Haoran Liu, Guanzheng Wu, Yunpeng Huang, Yongsheng Luo, Steve Park, Tianxi Liu   +18 more
wiley   +1 more source

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

Remote 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, Fernando Carbajo Fuertes, Mohsen Vahidzadeh, Corey D. Markfort, Fernando Porté-Agel   +4 more
doaj   +1 more source